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1. F
2. D
3. D
4. D
5. S
6. L
L
FOREWOR
DEFINITIO
DESCRIBI
DESCRIBI
STANDAR
LITERAL A
Lens D
RD
ONS AND
ING LENS
ING THE G
RD FILE FO
ABBREVIA
DescriVersion
Table
SIGN CO
S BLANK S
GEOMETR
ORMAT E
ATIONS
iption2.1, June
of Conten
NVENTIO
SPECIFICA
RY OF NO
EXAMPLE
n Stand2014
nts
ON
ATIONS A
ON-SPHER
ES
dard
AND ATTR
RICAL SU
RIBUTES
URFACES
Page
3
4
8
20
24
26
2
1. Forewo
1.1. S
ThuslafrThve
Th
1.2. N
Thanpr
St
AN
ISan
ISpo
ISm
ISle
1.3. C
Thfr
ord
cope and Pu
his Standard se by lens m
ayout softwarront surface ghis standardendors with le
he purpose of
Providboth fi
Providsurfacethickn
Normative re
he following nnd test methresented in th
tandard for D
ANSI Z80.1, FNational Stand
SO 10322-1, Ond multifocal
SO 10322-2, ower lens bla
SO 8980-1, Omultifocal lens
SO 8980-2, Oenses, Interna
Changes from
he following rom the prior
A Cat C
The Le
A Filte
A Hor
Distan
The m
New li
A Nom
New Im
urpose
addresses themanufacturers re use this dageometry of n replaces theens specificat
f this Standar
de a consisteninished and se
de a consistees, including
ness during pr
eferences
normative refhods that arehis Standard h
Device Comm
For Ophthalmdards Institut
Ophthalmic Ol lens blanks,
Ophthalmic Oanks, Internat
Ophthalmic Oses, Internatio
Ophthalmic Oational Standa
m prior vers
changes haveversion (2.0)
Code field has
ens Material c
er Brand field
Diam field ha
nce and Near R
maximum text
iterals have be
minal Diamete
mbedded Obj
e need for an in describing
ata in the selenon-sphericale many proptions in electr
rd is twofold:
nt method andemi-finished
ent and precig aspheric anrescription pr
ferences conte applicable thave been wri
munications, V
mic Optics — Pte
Optics — SemInternationa
Optics — Semtional Standa
Optics — Uncuonal Standard
Optics — Uncuards Organiza
sion 2.0
e been incorp) of this stand
s been added
classifications
d has been add
as been added
Reference Po
length of cert
een added to
er field has be
ject fields hav
industry-widg the technicection and prl lenses is inc
prietary file fronic form.
d nomenclatuspectacle lens
ise method fnd progressiv
ocessing.
tain additionato this Standitten in accor
Vision Counci
Prescription O
mi-finished spal Standards O
mi-finished sprds Organizat
ut finished spds Organizatio
ut finished spation
porated in thedard:
to uniquely i
s by refractive
ded to identify
d to specify th
int location fi
tain fields has
the Special fi
een added to a
ve been added
de data file strcal attributes rocessing of pcluded to enaformats curre
ure for describs blanks as su
for describinve lens surfac
al terms, guiddard. Wherevrdance with th
il
Ophthalmic L
pectacle lens bOrganization
pectacle lens tion
pectacle lenseon
pectacle lenses
e current rev
dentify a prod
e index have b
fy the brand n
he minimum u
ields for prog
s increased.
eld.
address mark
d to address p
ructure and reof lenses. Su
prescription lable accurateently in use
bing the specupplied by the
ng the geomeces, to ensur
delines, opticaver possible, hese reference
Lenses — Rec
blanks: Spec
blanks: Spec
es: Specificat
s: Specificati
vision of the L
duct above th
been modified
name of a tint
usable horizo
gressive lenses
ked diameters
products such
elated terminuppliers of lalenses. Data de control of le
when supply
cifications ande lens vendor
etry of non-se accurate co
al & geometricthe terms a
es:
commendatio
cifications for
cifications fo
tions for sing
ions for progr
Lens Descrip
he OPC level.
d.
or filter.
ontal diameter
s have been a
s.
h as polarized
Page 3
nology. It is foaboratory lendescribing thens thicknessying softwar
d attributes o, and
spherical lenontrol of len
cal tolerancesnd guideline
ons, American
r single-vision
or progressiv
gle-vision and
ressive powe
tion Standard
r of the lens.
added.
lenses.
3
r s e s. e
of
s s
s, s
n
n
e
d
r
d
2. Definit
2.1. G
Thpo
2
2
2
2
2
2
2
2
2
2
2
2
2
tions and S
Glossary of t
hroughout thossible, these
.1.1. ABBE materiwavele
d
where the hynm).
.1.2. BASE lensessurface
.1.3. CENTElens. T
.1.4. CURVAcurvatfor pow
.1.5. DENSshouldthis mvolum
.1.6. DIOPTa lens
.1.7. DIOPTby a pcentimto desi
.1.8. ENCRthat m
.1.9. FILTEwavele
.1.10. FITTINreferen
.1.11. INDEXwaveleor ben
.1.12. INTERhas bethe up
.1.13. LENS(
2.1.13.
2.1.13.
Sign Conv
terms and d
his Standard,e definitions a
VALUE (abbial, and is a mengths (or col
d
F C
1
d is the indeydrogen F-line
CURVE, NO, for examplee of a semi-fin
ER, OPTICALThis point is fr
VATURE, INSture, measurewer calculatio
ITY: The masd be expresse
manner—is eque of the mate
TER: A unit oor lens surfac
TER, PRISM:prism or lens.meters, perpenignate the pri
ROACHMENTmay interfere w
ER: A lens mengths of visib
NG CROSS (ance point for p
X OF REFRAength) in air t
nd a ray of ligh
RMEDIATE (een designed pper segment
(ES)
1. ASPHERIC
2.BIFOCAL: A
vention
definitions
, the followinare consistent
br. ABBE): Thmeasure of thelors). The Abb
ex of refractioe (486.13 nm
MINAL (abbe the manufanished spheri
L: The point oree from prism
STANTANEOed in millimetons.
ss per unit voled in units of uivalent to sprial to an equ
of measuremece. The symbo
A unit of me. Prism powendicular to itssm diopter.
TS: Any markiwith the optic
material, treable radiation
abbr. FC): Thapositioning th
ACTION (abto that in a mht. The index
abbr. INT): Fand manufacof two.
C: A lens in wh
A multifocal l
ng terms, de with ANSI an
he Abbe valuee ability of thbe value d, is
on of the heliu), and C is th
r. BASE): Thacturer's marical lens.
on the front smatic effects.
OUS RADIUSters (mm) is t
lume of a lensf grams per cpecific gravity
ual volume of w
ent in inverse ol ‘D’ is used t
easurement uer, in these uns line of incide
ings, physicalcally usable ar
atment, or c(light) while t
at point on a he lens in fron
br. INDEX):edium. This rof refraction
For the purpoctured to cor
hich one or bo
lens designed
efinitions, andnd ISO defini
e is the reciprhe material to s defined by th
um d-line (58he index of re
he standard orked or nomi
surface of a le
S OF (abbr. the radius of c
s material. Focubic centimey, which is a water.
meters (plusto designate t
used to expresnits, is measuence at a dist
l alterations, rea of the lens
coating that transmitting
lens as specifnt of a patient
: The ratio oratio expresseis given for a
oses of this Srrect vision at
oth surfaces a
d to provide co
d abbreviatioitions.
rocal of the rrefract light
he following f
7.56 nm), F efraction of th
or reference cinal tool surf
ens intersecte
RAD): Thecurvature spe
or the purposeeter (g/cc). Dunit-less exp
s or minus) usthe diopter.
ss the angle oured as the dance of one m
or lenticular s, unless othe
absorbs, in others.
fied by the mt’s eye.
of the velocies the ability ospecified refe
Standard, the t intermediat
are aspheric.
orrection for
ons shall app
elative disperinto its variou
formula:
is the index ohe hydrogen C
curve in a lenface power o
ed by the opti
instantaneoecified by the
es of this Stanensity—when
pression comp
sed to express
of deviation ofdisplacement meter. The sym
zones/ lips oerwise defined
whole or in
anufacturer t
ity of light (of a lens mateerence wavele
area in a trifte ranges. Thi
two discrete d
Page 4
ply. Whereve
rsion of a lenus componen
of refraction oC-line (656.2
ns or series of the finished
ical axis of th
ous radius omanufacture
ndard, densityn expressed inparing a given
s the power o
f a ray of lighof the ray, in
mbol is used
n a lens blankd.
n part, som
to be used as
(with a givenerial to refracength.
focal lens thais is generally
distances.
4
r
s nt
of 7
of d
e
of r
y n n
of
ht n d
k
e
a
n ct
at y
2
2
2.1.13.
2.1.13.
2.1.13.
2.1.13.
2.1.13.
2.1.13.
2.1.13.
2.1.13.
2.1.13.
2.1.13.
2.1.13.
2.1.13.
.1.14. MERIDspecifiaxis.
.1.15. POWE
2.1.15.
2.1.15.
2.1.15.
2.1.15.
2.1.15.
3.BLENDEDdistances w
4.FINISHED
5. LENTICULis providedremainder dimension
6.MINUS: A edge and ca
7. MULTIFOC
8.PLUS: A leand causes
9.PROGRESSdistance in
10.SEMI-FIN
11.SINGLE V
12.SPHERICA
13.SPHERO-meridians. imprecisely
14.TRIFOCALdistances.
DIAN: A lineied point. Wh
ER
1. ADDITIONand distancthe segmen
2. CYLINDERtwo principcylinder poprincipal m
3. PRISM: This the deviasurface at a
4. REFRACTIair is a medefined as f
FrS
d
where d isreference wmillimeters
5. SPHERE (acylinder lenmeridian c
: A multifocawithout sharpl
D: A lens finish
LAR: A lens, ud over only a li
of the lens isto the lens fo
lens having auses the dive
CAL: A lens d
ens having pothe converge
SIVE: A lenswhich the po
NISHED: A len
VISION: A len
AL POWER: A
CYLINDER: It is sometim
y, as a cylinde
L: A multifoc
e of intersectihen applied to
N (abbr. ADD)ce reference p
nt or addition
R (abbr. CYL)pal meridiansower is the difmeridians, as m
he ability of a ation of a raya specified poi
IVE SURFACEeasure of its afollows:
1
s the index owavelength as.
abbr. SPH): ns, the sphercontaining th
l lens designely defined bor
hed to its fina
usually of stroimited centra called the car mounting.
negative refrergence of a c
designed to pr
sitive refractience of a collim
s designed tower changes
ns having onl
s designed to
A lens that ha
A lens havinmes referred toer lens.
cal lens desig
ion of a surfao a lens, it ma
): The differenpoints. The veis used.
: The differens of a spherofference betwmeasured at t
prism or a ley normal to tint. The amou
E: The refracability to chan
of refraction and r is the
In a sphericre power is l
he least minu
ed to providerders between
al form, includ
ong refractiveal region of tharrier and pro
ractive powercollimated bea
rovide correct
ive power. It mated beam o
to provide cocontinuously
ly one surface
o provide corr
as the same re
ng different o as an astigm
gned to provid
face with a play also be defi
nce in vertex ertex (either
nce (plus or mo-cylinder len
ween the backthe distance r
ens to deviatethe back surfunt of deviatio
ctive surface pnge the verge
of the lens m radius of c
cal lens, the dlocated in thus or most p
e correction fon optical area
ding vertex po
e power, in whe lens, calledovides no refr
r. It is thinneam of light.
tion for two or
is thicker at tof light.
orrection fory rather than d
e finished to a
rection for a si
efractive pow
refractive pomatic or toric
de correction
lane perpendfined as a plan
power measufront or back
minus) betweens. For the p
k vertex powerreference poin
e a ray of lighface of a lenson is expresse
power (FS) of ence of a bea
material usingcurvature of
dioptric powhe cylinder ax
plus power.
or specific disas.
owers and thi
which the presd the lenticularactive correc
r at the cente
r more discre
the center tha
r more than discretely.
a specific curv
ingle viewing
wer in all meri
ower in the c lens or, com
n for three dis
dicular to thane that contai
urements betwk) of the surfa
en powers mepurposes of tr measureme
nt of the lens b
t transmitted and penetraed in prism d
f a lens surfacam of inciden
g the heliumthe refractin
wer of a lens. xis meridian,For the pur
Page
screte viewing
ickness.
scribed powear portion. Thction but give
er than at th
ete distances.
an at the edg
one viewing
ve.
g distance.
dians.
two principamonly though
screte viewing
at surface at ins the optica
ween the neaace containing
easured in ththis Standardents of the twoblank.
d through it. Iating the frondiopter units.
ce bounded bynt light and i
d-line as thng surface in
In a sphero, which is thrposes of thi
5
g
r e s
e
e
g
al h
g
a al
r g
e d, o
It nt
y s
e n
o-e s
2
2
2
2
2
2
2
2.1.15.
.1.16. REFER
2.1.16.
2.1.16.
2.1.16.
2.1.16.
.1.17. REFERStandavertex mercu
.1.18. SAGIT
.1.19. SEGMfrom tthe cas
.1.20. SLAB-bicentof vert
.1.21. SPECI
.1.22. SURFA
2.1.22.
2.1.22.
Standard, smeridian, a
6. VERTEX: Tlens vertex in diopterscylindrical add power lenses. The
1
FFV
where F1 athickness o
RENCE POIN
1. DISTANCEthe distance
2.LAYOUT (aas a referenaddition lemultifocalslenses, the (e.g., decen
3.NEAR (abbmanufactur
4.PRISM (abprism valureference pmarkings (bisecting thprism refer
RENCE WAVard is the helpower, and A
ury e-line (at 5
TTA (abbr. SA
MENT (abbr. Sthe distance pse of a fused o
-OFF and REric grinding otical prism for
IFIC GRAVITY
ACE
.1.ASPHERICaxis of symvertex to th
.2.ATORIC: Awhere at lesymmetrica
sphere poweras measured a
The inverse oto the corresp
s. In a distacomponent ois generally
back vertex p
2
1
1 FF
tF
d
and F2 are thof the lens in m
NT
E (abbr. DRP)e sphere pow
abbr. LRP): Tnce point for enses, the LR, the LRP is LRP is the ge
ntered single v
br. NRP): Threr at which t
bbr. PRP): The of the finis
point is locate(or “engravinghose two marrence point an
VELENGTH: lium d-line (aAbbé value sh546.07 nm) is
AG): The heigh
SEG): A speciportion. This mor cemented m
EVERSE SLAor molding inr a line of sigh
TY: See Densit
C: A non-sphemmetry. Such he periphery.
A surface havieast one prinal with respec
r is the back at the distance
f the distanceponding focal
ance prescripof power are
expressed inpower FV is de
he front and meters, and
): That point wer, cylinder p
That point onpositioning t
RP is coincidcoincident w
eometric centvision aspheri
hat point on ahe addition p
hat point on ashed lens is ed at the midgs”), separaterkings. For nnd distance re
The referencat 587.56 nmhould be prov
s also used as
ht or depth of
ified area of amay also refemultifocal len
AB-OFF (abbrnto the lower ht through tha
ty.
erical surfacesurfaces typic
ing mutually ncipal meridict to both prin
vertex powee reference po
e, expressed il point of the
ption, the spalways expre
n terms of frefined using t
back surfaced is the index
on a lens as power, and ax
n a lens as spethe lens in frodent with thewith the locater (GC) of thic lenses).
a multifocal power is meas
a lens as specto be measu
dpoint betweeed by a dista
non-aspheric seference point
ce wavelength). For the puvided using ta reference w
f a curve at a g
a multifocal ler to the actuans.
r. SLAB): A portion of anat portion of t
e that is rotatcally have con
perpendiculaian has a no
ncipal meridia
r measuremeoint of the len
in meters, froreference wa
pherical compessed in term
front vertex pthe equation:
e powers (resx of refraction
specified by txis shall be me
ecified by theont of the wee fitting cros
ation of the she lens blank,
or progressivsured.
cified by the mured. For proen the semi-vance of 34 msingle vision t are assumed
h used in theurposes of thisthe helium d-wavelength in
given diamet
lens having aal piece of ma
prismatic con ophthalmic the lens.
tionally symmntinuously va
ar principal mon-circular seans.
ent of the sphns blank.
om either theavelength. Thiponent of po
ms back vertepower for mo
spectively), t n of the lens m
the manufacteasured.
e manufactureearer’s eye. Foss (FC). For segment. For unless other
ve lens as sp
manufacturerogressive lensvisible alignmm, along a hand multifoc
d to be coincid
e United States Standard, s-line referencsome countri
er.
a different refaterial added
omponent inclens to modif
metrical with ariable curvat
meridians of uection. These
Page
here principa
e front or backis is expressedower and thex power. Thost multifoca
is the centematerial.
turer at which
er that is usedor progressiv
conventionar single visionrwise specified
ecified by th
r at which thses, the prism
ment referenchorizontal axical lenses, thdent.
es and in thisurface powerce system. Thies.
fractive powed to the lens in
corporated byfy the amoun
respect to antures from th
unequal powee surfaces ar
6
al
k d e e
al
r
h
d e
al n d
e
e m e s e
s r, e
r n
y nt
n e
r e
2.2. S
Th
RS
L
RS
P
RS
D
RS
N
2.1.22.
2.1.22.
ign convent
he following s
For thintegeand lit
Text en
Unsign
Negati
Conve
Concav
For nuspecifi
The lacenter
Right Lens System (mm
LRP (In / Dow
The prpoint (
Right Lens System (mm
PRP (Out / U
The dreferen
Right Lens System (mm
DRP (In / Up
The nepoint (
Right Lens System (mm
NRP (In / Up
.3.SPHERICA
.4.TORIC: A meridians. a football. Adoes not pa
tion
sign conventi
he purposes ofrs (when no dterals refer t
ntries in reco
ned (±) nume
ive (-) numeri
x front curves
ve front curve
umerical valuied in that par
ayout referenr (GC) of the r
m)
wn)
rism referenc(LRP) of the r
m)
Up)
distance refernce point (PR
m)
p)
ear reference(PRP) of the r
m)
p)
AL: A curved s
surface in thThe shape m
A toric surfacass through th
ion and nume
f this Standardecimal precio designated,
rd fields shou
erical values s
ical values sh
s and concave
es and convex
ues, the precrticular field’s
nce point (LRright lens blan
In (RighFrom G
Positive (
ce point (PRPright lens blan
In (RighFrom LR
Negative
rence point (RP) of the righ
In (RighFrom P
Positive (
e point (NRP)right lens blan
In (RighFrom P
Positive (
surface havin
he form of a may be visualizce is generatehe center if th
erical precisio
rd, numericision is requi, predefined c
uld not contai
shall be interp
hall include a m
e back curves
x back curves
cision shall bs data type.
RP) location nk according
ht)GC
OuFr
(+) Ne
) location valnk as follows:
ht)RP
OuFr
e (–) Pos
(DRP) locatioht lens blank
ht)RP
OuFr
(+) Ne
) location valunk as follows:
ht)RP
OuFr
(+) Ne
ng the same ra
torus havingzed as a smal
ed by rotatinghe circle.
on is used thro
cal values rered), text en
combinations
in commas ‘,’.
preted as bein
minus (-) sign
shall require
shall require
be indicated
values shall to this sign co
ut (Left)rom GC
egative (–)
lues shall be s:
ut (Left)rom LRP
sitive (+)
on values shas follows:
ut (Left)rom PRP
egative (-)
ues shall be s:
ut (Left)rom PRP
egative (-)
adius of curva
g different poll part of the sg an arc of a c
oughout this S
efer to either fntries refer tos of characters
.
ng positive (+)
n in all field e
e a positive (+
e a negative (-
by the decim
be specified onvention:
Above From GC
Negative (
specified relat
Above From LR
Positive (+
hall be specif
Above From PR
Positive (+
specified relat
Above From PR
Positive (+
ature in all me
owers in the surface of a dcircle around
Standard:
floating poino character os having a spe
).
entries.
) radius.
) radius.
mal place re
relative to t
C BelFro
(–) Pos
tive to the lay
RP BelFro
+) Neg
fied relative
RP BelFro
+) Neg
tive to the pr
RP BelFro
+) Neg
Page
eridians.
two principadoughnut or o
an axis which
nt numbers oor string dataecified length
equirement a
the geometri
lowom GC
itive (+)
yout referenc
lowom LRP
gative (–)
to the prism
lowom PRP
gative (–)
rism referenc
lowom PRP
gative (–)
7
al of h
r a, .
s
c
e
m
e
3.
Describ
The opticconventioprovided i
3.1. F
3
4
5
7
* See pag
bing Lens
cal and geomons specified in incrementa
Field definiti
# ? Fi
1 M MF
2 M Cla
3 M De
4 M Ma
5 M Ma
6 M Pro
7 M Sty
ge Section 6.
Blank Sp
metrical (phybelow. Reco
al form within
ions and req
eld Label
FG*
ass
escription
aterial
aterial Brand
oduct Name
yle
.0 for creatin
pecificatio
ysical) attribuords for new n a separate f
quirements
Descripti
Unique MaIdentifier
FinishedFinished /Semi-FinisSemi-Fin /
Product D
GlassGlass Mid-Glass HighGlass UltraPlastic Plastic MidPlastic HigPlastic UltPolycarbonOther Plas
Material B
Product Br
Single VisiBifocal Trifocal QuadrifocaProgressivDouble/Du40% Interm60% Interm70% IntermFlat-Top Executive-Curve-TopRound Task-SpecAspheric Atoric Lenticular
ng additiona
ns and At
utes of a lenproducts, de
file.
s for each re
ion / Defini
anufacturer
/ Extra Thin shed / Extra Thick
escription
-Index (n > 1.h-Index (n > 1a-Index (n >
d-Index (n > gh-Index (n >tra-Index (n >nate stic
Brand Name
rand Name
ion
al ve ual Segmentmediate mediate mediate
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cific
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al literal abbr
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acters
acter max
acter max
s, 2 h separated
e literals, ll appear in rovided in
8
d e
9
3
3
3
3
3
3
3
# ? Fi
8 M Fil
9 M Co
10 M Co
11 M Rig
12 M Le
13 M Di
14 M Sp
15 M Cy
16 M Frn
17 M Bc
18 M C T
19 M E T
20 M LR
21 M LR
22 M d I
23 M N R
24 e I
25 Ab
26 De
27 PR
28 PR
29 Se
30 Se
31 Int
32 Sla
33 Ca
34 Bw
35 Ve
36 Di
eld Label
lter
oating
oating Brand
ght OPC
eft OPC
ameter
ph / Base
yl / Add
nt Rad
ck Rad
Thk
Thk
RP In
RP Down
Index
Ref
Index
bbe
ensity
RP Out
RP Up
g Wd
g Thk
t Ht
ab
ar Rad
wl Diam
er Diam
a Diam
Descripti
Clear (DEFMirroredPhotochroPolarizedTinted UV-InhibiTint Color
Un-CoatedAnti-RefleScratch-Re
Coating Br
Right Eye
Left Eye O
Maximum
Sphere PowNominal B
Cylinder PAddition P
Front Curv
Back Curv
Center Thi
Edge Thick
Horizontal
Vertical Lo
Refractive
Helium d RMercury e
Refractive
Abbe Valu
Density of
Horizontal
Vertical Lo
Width of W
Fused Glas
Height of T
Slab-off Va
Radius of L
Bowl Diam
Minimum
Diagonal D
ion / Defini
FAULT)
omic
ting
d (DEFAULT)ective Coatingesistant Coati
rand Name
Optical Produ
Optical Produc
m Diameter of
wer for FIN LBase for SFN L
Power for FINPower for SFN
ve Radius for
ve Radius
ickness
kness
l Location of
ocation of LR
Index of He d
Reference SysReference Sy
Index of Hg e
ue
f Lens Materia
l Location of
ocation of PR
Widest Part of
ss Seg Thickn
Trifocal Inter
alue (Prism D
Lentic Carrier
meter of Lenti
Vertical Diam
Diameter
ition Li
NMPHPOTIUVSe
)g ing
UARSR
uct Code
ct Code
Blank
Lenses;Lenses
N Lenses;N Lenses
Power
LRP
RP
d-line
stemystem
NN
e-line
al
PRP
RP
f Seg
ness
rmediate
Diopters)
r Curve
icular
meter
iterals Da
NONEMIRR
HOT OLR INT
UVRI ee 6.1
Muchby
UCR R
Muchby
Te
Te
Te
Nu
NuIn
NuIn
Nu
Nu
Nu
Nu
Nu
Nu
Nu
NDNE
2-c
Nu
Nu
Nu
Nu
Nu
Nu
Nu
Nu
Nu
Nu
Nu
Nu
De
ata Type
ultiple literalsaracters each
y spaces
ultiple literalsaracters each
y spaces
ext, 255-chara
ext, 10-charac
ext, 10-charac
umeric, 0-dec
umeric, 2-decdiopters
umeric, 2-decdiopters
umeric, 3-dec
umeric, 3-dec
umeric, 1-deci
umeric, 1-deci
umeric, 1-deci
umeric, 1-deci
umeric, 3-dec
character lite
umeric, 3-dec
umeric, 0-dec
umeric, 2-dec
umeric, 1-deci
umeric, 1-deci
umeric, 1-deci
umeric, 1-deci
umeric, 0-dec
umeric, 2-dec
umeric, 3-dec
umeric, 0-dec
umeric, 0-dec
eprecated (Bla
Page 9
s, 4-h separated
s, 2-h separated
acter max
cter
cter
cimal
cimal
cimal
cimal
cimal
imal
imal
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ral
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ank)
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3
3
3
4
4
4
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3.2. G
Thch“CCcoledequin
Thapshn(iofis
3.3. G
Thofbephw
3.
# ? Fi
37 Se
38 Up
39 Sp
40 M Ca
41 M Fil
42 DR
43 DR
44 NR
45 NR
46 Ho
47 No
48 Ob
49 Ob
Guidelines fo
he data descrharacters conCR” (carriagearriage returontains data fenses. Each rescribed in thuotation mar
ndicated below
he following ppear in the fhould be suppot be applicabi.e., “,,”). Fieldf any style or
s applicable bu
Guidelines fo
he physical spf multifocals elow. Numerhysical distan
which have an
.3.1. Specify
3.3.1.1
eld Label
g Sep
p Add
pecial
at Code
lter Brand
RP In
RP Up
RP In
RP Up
or Diam
om Diam
bj Clear
bj Rad
or specifyin
ribed herein nstrained to the return), “LFrn/line feed pfor a particul
record is divihe table belowrks (i.e., “”). w.
data field entfile—is providplied in the fible for all lends that shall gtype have beeut is intention
or specifyin
pecifications segments wit
ric values annces shall beinfinitely lon
ying surface p
. Front curve
The front cshall be spe
Descripti
Separation
Upper Add
Product NProduct NLip EncroaPolarized M‘Optimal’ REmbedded
Unique Pr
Filter Bran
Horizontal
Vertical Lo
Horizontal
Vertical Lo
Minimum
Nominal o
Imbedded
Imbedded
ng lens blank
shall be conthe range of 32F” (line feedpairs divide lar lens or, inided into fielw. CharacterThe first rec
tries shall be pded, as well asield, and any s styles and sgenerally requen indicated inally left blan
ng geometric
for the geomthin the lens d text should
e expressed ing radius of cu
power by radi
e surface pow
curve surface ecified using
ion / Defini
n of Dual Segm
d Power of Du
Non-A/R CompNon-Tintable
achment Mark EncroacRectangular Bd Object
roduct Identif
nd Name
l Location of
ocation of DR
l Location of
ocation of NR
Horizontal D
or Marked Dia
Object Clear
Object Radiu
k attributes
tained in an A2 to 127 (the s), and “SUB”the file into
n the case of clds, delimite
r field entriescord shall be
provided in ths a descriptioliteral entriehould be left uire an entry in the “?” colu
nk—that is, “,,
cal (physica
metry of lens bshall be prov
d adhere to n millimeter
urvature, the r
ius
wer (Frnt Rad)
power, whichthe instantan
ition Li
ments
ual Seg
patible
chment Blank
NNLIPOOO
fier
DRP
RP
NRP
RP
Diameter
ameter
rance
us
s using a com
ASCII text filset of printabl” (used to m
o lines, each chiral lenses
ed by commas (either litera
a header row
the order showon / definitiones that shouldblank, whichfor most, thoumn with the”—the defaul
al) measure
blanks, the gevided using tthe sign con
rs (mm). For radius shall b
)
h is the valueneous radius
iterals Da
Nu
Nu
NARNTN
IP OL PT BJ
Muchby
Te
Te
Nu
Nu
Nu
Nu
Nu
Nu
Nu
Nu
mma-delim
le, which is ale characters)
mark the end of which cothat exhibit “
as. The charaals or text) sw containing
wn below. Thn of the field,d appear in thh shall be exprough not necee letter ‘M’ folt value, if any
ements of le
eometry of lenthe methods anvention deve
“Plano” surfbe expressed a
e used for surof curvature
ata Type
umeric, 1-deci
umeric, 2-dec
ultiple literalsaracters each
y spaces
ext, 16-charac
ext, 255-chara
umeric, 1-deci
umeric, 1-deci
umeric, 1-deci
umeric, 1-deci
umeric, 0-dec
umeric, 0-dec
umeric, 1-deci
umeric, 2-dec
mited file for
a stream of ei) and the cont
of an MS-Dmprises a re“handedness,
acteristics of shall be enclog all of the fi
he field’s label the type of ehe field. Certaressed as adjaessarily all, spr mandatory
y, shall be ass
ns blanks
ns blanks, anand conventieloped in Sefaces with zeas zero (0).
rfacing powerof the front
Page 10
imal
cimal
s, 3h separated
cter max
acter max
imal
imal
imal
imal
cimal
cimal
imal
cimal
rmat
ight-bit ASCItrol character
DOS text file)ecord, which,” for a pair oeach field ar
osed in doublfield labels, a
l—as it shouldentry data thaain fields mayacent commapectacle lensey. When a field
umed.
nd the locationons described
ection 2.2. Alero curvature
r calculationssurface at th
0
I s ). h
of e e s
d at y s s d
n d ll e,
s, e
3.
3.
3.3.1.2
3.3.1.3
.3.2. Specify
The cegeomemeasuprovidrequir(e.g., p
Figur
.3.3. Specify
The edits uppgeomeillustrastatistirequir
distance reNote that cnegative ra
Figure 1 In
2. Back curve
The back crear surfaclens blank. have a negblanks. Whradius of ccontaining
3. Lenticular c
The lenticufront lentic
ying lens blan
enter thickneetric center, urement has bded from a sted for finishe
plus-powered
re 2 Center th
ying lens blan
dge thickness permost vertietric center ofated in Figuically-significed for finishe
eference pointconvex front dius.
nstantaneous
surface powe
curve surface e at either thNote that con
gative radius.hen this valucurvature prothe specified
curve surface
ular curve surcular surface w
nk center thic
ess of the lenmeasured n
been illustrattatistically-siged lens blanklenses).
hickness of a (
nk edge thickn
of semi-finisical (90°) edgf the lens bla
ure 3. The mcant sample ped lens blank
CenterThickness
t (DRP) of thcurves have
s radius of cur
er (Bck Rad)
power of shahe distance rencave back cu This value i
ue is suppliedovided shall b
sphere power
power (Car R
rface power shwithin the car
ckness (C Thk
ns blank shalnormal (perpted in Figure gnificant sams whose nom
(progressive)
ness (E Thk)
shed lens blange, measured
ank and normmean (or avpopulation of ks. When this
RadiusCurvatu
Surface
s
NoTo
he lens blanka positive rad
rvature
all be specifieeference poinurves have a pis recommend for finishedbe that throur (Sph).
Rad)
hall be specifrrier zone of t
k)
ll be specifiependicular) to
2. The meanmple populatiominal edge thi
lens blank
nks shall be sd parallel to
mal to the fronverage) edge
the lens blans value is sup
DRP
s ofure
G
ormalFront
k. This has bedius while co
ed using the nt (DRP) or thpositive radiu
nded but not d lens blanksugh the princ
fied using thethe lens blank
ed as the thio the front
n (or averageon of the lensickness is less
specified as than imaginarynt surface. Th
thickness snks. This valupplied for fini
GC
een illustrateoncave front
radius of curhe geometric
us while converequired for
s with cylindcipal meridia
e radius of cuk.
ckness of theand back s
e) center thicks blanks. This than the cen
he thickness oy axis passinghis measurem
shall be provue is recommeshed lens bla
Page 1
ed in Figure 1curves have
rvature of thc center of thex back curve
finished lener power, th
an of the len
urvature of th
e blank at itsurfaces. Thikness shall bis value is nonter thicknes
of the blank ag through th
ment has beenvided from aended but noanks, the edg
1
1. a
e e s s e s
e
s s e
ot s
at e n a
ot e
3.
thicknin field
Figur
.3.4. Specify
The lomultifothe geo
For flaas thesegmeseparageomesegmethat biand a measu
For singeomeaspher
Figur
For prbe speblank. centerhave b
ness provided d 14 (Sph).
re 3 Edge thic
ying layout re
ocation of thefocal lenses anometric cente
at-top, curve-e horizontal lent, relative tation, as measetric center oent (SC). LRP isects the geohorizontal li
urements have
ngle vision leetric center ofric lenses).
re 4 Layout re
rogressive lenecified as the v
Since the fitr, the LRP Dobeen illustrate
shall be that
ckness of a (pr
eference point
e layout refernd the fitting er (GC) of the
-top, Executivlocation and to the geomesured paralle
of the lens blP Down refersometric centene that is tane been illustra
enses, the LRf the lens bla
eference point
nses, LRP In svertical locatitting cross of own value fored in Figure 5
NormTo Fro
LD
at the meridi
rogressive) le
t location (LR
rence point (cross of prog
e lens blank, u
ve-style, and LRP Down
etric center ol to the uppeank and a ve
s to the verticr of the segmngent to the ated in Figure
P In and LRPank, unless ot
t location of a
shall be speciion of the fittmost progres
r such lensesfor a decente
GC
malont
GG
LRPown
ian of the len
ens blank
RP In and LRP
(LRP), whichgressive additusing the sign
similar multin shall be spof the lens blermost edge (ertical axis thcal separation
ment, betweenuppermost e
e 4.
P Down shaltherwise spec
a lined multif
ified as the hting cross, relssive addition
s will typicallyered lens blan
C
UpperEdge 90
90°
SC
GC
SC
GC
LRPIn
LRP
ns containing
P Down)
h includes thetion lenses, sh
n convention d
ifocal lenses, pecified as thlank. LRP In (or border) ofhat bisects thn, as measuren the geometredge (or bord
ll be assumedcified (e.g., fo
focal lens blan
horizontal locaative to the gn lenses is loy be negative
nk.
EdThic
r0°
P
the sphere po
e segment ofhall be specifdescribed in S
LRP In shalhe vertical lo
represents tf the segmenthe geometric ed parallel to ric center of tder) of the se
d to be coincior decentered
nk
ation and LRgeometric cenocated abovee (-). These m
dgekness
Page 1
ower specified
f conventionafied relative toSection 2.2.
ll be specifiedocation of ththe horizontat, between thcenter of th
a vertical axithe lens blankegment. Thes
ident with thd single vision
RP Down shalnter of the len
the geometrimeasurement
2
d
al o
d e
al e e s k e
e n
ll s c s
3.
Figur
For rothe segminimuppermis not measu
Figur
.3.5. Specify
The lopoint (
PRP Overticablank. that ina vertias melayout point.
D
re 5 Layout re
ound and blengment, relativ
mum separatiomost edge of
necessary, surements are i
re 6 Layout re
ying prism re
cation of the (LRP) of the l
Out shall beal location of
PRP Out repntersects the pical axis that asured parallreference po
G
LRPDown
eference point
nded multifocve to the geomon (or the shothe segment
since these leillustrated in
eference point
eference point
prism referelens blank usi
e specified asf the prism represents the prism referenintersects thelel to a verti
oint of the len
SC
GCLRP
t location of a
cal lenses, LRmetric center ortest distance
boundary or enses requireFigure 6.
t location of r
t location (PR
nce point (PRing the sign co
the horizonteference poinhorizontal se
nce point, betwe prism refereical axis thatns blank and
LRI
G
LR
a progressive
RP Down shalof the lens ble) between think markings
e no initial h
round and ble
RP Out and PR
RP) shall be sonvention de
tal location ant, relative toeparation, as ween the layoence point. Pt intersects tha horizontal
RPIn
GC
P
D
addition lens
ll be specifiedank. For such
he geometric cs (if blended)horizontal ori
ended multifo
RP Up)
specified relatscribed in Sec
and PRP Upo the layout r
measured paout reference PRP Up refershe prism refeaxis that inte
LRPDown
G
LRPDown
s blank
d as the vertich lenses, LRPcenter of the ). An LRP Inientation. Th
ocal lens blank
tive to the layction 2.2.
p shall be spreference poiarallel to a hpoint of the l
s to the verticerence point,ersects the pr
SC
GCLRP
Page 13
cal location oP Down is thlens blank thmeasuremen
he LRP Down
ks
yout referenc
pecified as thnt of the len
horizontal axiens blank and
cal separation, between thrism referenc
3
of e e
nt n
e
e s s d
n, e e
3.
Althouprism multiforeferenlens bl
Figur
.3.6. Specify
The lospecifidescrib
DRP verticablank. interseverticaas meaprism point.
NRP verticaNRP Iinterseverticameasureferen
Althoupointsand Nand Npurpos
ugh sphericalreference p
focal lenses gnce point is slank. The pris
re 7 Prism ref
ying distance
ocation of theied relative tobed in Section
In shall be al location of
DRP In reprects the distanal axis that inasured parallreference poi
In shall be al location of tIn representsects the near al axis that inured parallel tnce point of th
ugh single vis specified byRP locations
NRP locations se progressive
l, semi-finishpoint specifiegenerally shopecified, it sh
sm reference p
ference point
and near refe
e distance reo the prism rn 2.2.
specified as the distance
resents the honce referencetersects the dlel to a verticint of the lens
specified as the near refers the horizon
reference pontersects the nto a vertical he lens blank
sion and multy the manufac
specified. Fomay not exis
e lens blank a
hed single vised by the mould have a hall be assumpoint location
location of a p
erence point l
eference poineference poin
the horizontareference po
orizontal sepae point, betwedistance refercal axis that is blank and a
the horizontarence point, rntal separatiooint, betweennear referencaxis that inte
k and a horizo
tifocal lensescturer, gener
or certain taskst. The distan
are illustrated
PR
LRP
PROu
sion and mulmanufacturer
PRP locationmed to coincid
n of a progres
progressive le
locations (DR
nt (DRP) andnt (PRP) of th
al location anoint, relative taration, as meeen the prismrence point. Dintersects thehorizontal ax
al location arelative to theon, as measu
n the prism rce point. NRPersects the nental axis that
s will frequenral-purpose pk-specific pronce and near
d in Figure 8.
RP
RPut
ltifocal lensesr, progressiven specified.
de with the lassive lens blan
ens blank
RP In, DRP Up
d near referehe lens blank
nd DRP Upto the prism easured paral
m reference poDRP Up referse distance refxis that inters
nd NRP Upe prism refereured parallel reference poinP Up refers toear referencet intersects th
ntly not have progressive leogressive lensr reference po
PRPUP
s will typicale, aspheric, When no se
ayout referencnk is illustrate
p, NRP In, an
ence point (Nk using the sig
p shall be spreference poi
llel to a horizooint of the lens to the verticference pointsects the dista
p shall be spnce point of tto a horizon
nt of the lenso the vertical e point, betwee near referen
distance or nenses shall haes, however,
oint locations
Page 14
lly not have and finished
eparate prismce point of thed in Figure 7
nd NRP Up)
NRP) shall bgn convention
ecified as thint of the lenontal axis thans blank and cal separationt, between thance referenc
ecified as ththe lens blankntal axis thas blank and separation, aeen the prismnce point.
near referencave both DRPseparate DRP
s of a general
4
a d
m e
7.
e n
e s
at a
n, e e
e k. at a s
m
e P P l-
3.
3.
Figur
.3.7. Specify
The bobe spezone. outerm
Figur
.3.8. Specify
The dblank. outermphysic
Additithe lendefinitprovidmay di
re 8 Distance
ying bowl dia
owl diameteecified as the This is the h
most edges of
re 9 Specifyin
ying blank dia
diameter of This is the
most edges ofcal limitations
onally, a mans manufactution of the Di
ded on the leniffer from the
and near refe
ameter (Bwl D
er of a lenticuwidest horizo
horizontal disthe bowl. Thi
ng the bowl di
ameter (Diam
the lens blanhorizontal dif the lens blas. This is illust
rked or nomurer to speciameter field, ns packaginge physical diam
Bow
l Dia
met
ererence point l
Diam)
ulated lens blontal dimensistance betweis is illustrate
ameter of a le
meter, Ver Dia
nk shall be sistance betweank, regardletrated in Figu
minal diameify a value thprovided abolabel or used
meter (Diame
DRP
NRPUp
locations of a
lank (for examion of the bow
een two paraled in Figure 9
enticulated le
am, Hor Diam
specified as teen two paraess of the preure 10, for two
eter (Nom Dhat does notove. For examd to identify teter).
NRPIn
DRPIn
NR
D
progressive l
mple, a 40-mwl, which is t
allel lines tan.
ens blank
m, and Nom D
the widest hoallel lines tanesence of ano different len
Diam) field is t necessarily
mple, the nomthe lens blank
P
DRPDown
lens blank
mm post-catarthe central op
ngent to the
Diam)
orizontal dimngent to the ny encroachmns blank shap
available in ocomply with
minal diameterk in an order
Page 1
ract lens) shalptically-usablright and lef
mension of thright and lef
ments or othepes.
order to allowh the physicar (Nom Diamr entry system
5
ll e ft
e ft r
w al
m) m
Figur
For leblanksdimenpolarizencroablanksDiam)lens blhorizoillustradiamet
Figur
For lendiamelens blDiam)
re 10 Specifyi
ns blanks wis with physica
nsions, includzed lenses, achment shous with physica shall be speclank to any p
ontal (180°) ated in Figurter measurem
re 11 Specifyin
ns blanks witheter (Ver Dialanks with ph shall be spec
D
ing the diame
ith a verticalal encroachm
ding lenticularadditional m
uld be identifal encroachmcified as the tphysical encroaxis contain
re 11. When nment and is th
ng the horizon
h a vertical diam) shall be hysical encrocified as the t
Diameter
eter of a lens b
l dimension tments that lim
r lips for promeasurementfied using th
ments in the hotwice the shooachment thaing the geom
no encroachmherefore not re
ntal diameter
imension thatspecified as achments in twice the sho
Horizon
Axis
G
blank
that differs fmit the usableogressive lensts can be
he appropriatorizontal merrtest distanceat obstruct thmetric cente
ments are preequired.
r of a lens bla
t differs fromthe tallest vethe vertical mrtest distance
ntal Diamet
s Markings
GC
from the hore size of the ses and horizprovided. A
te literal in thridian, the hoe from the gehe optical useer. These diaesent, this me
ank
m the horizontertical dimensmeridian, thee from the ge
D
ter
rizontal dimelens blank inontal alignm
Additionally, he Special forizontal dieometric cente of the lens ameter measueasurement is
tal dimensionsion of the lee vertical dieometric cent
iameter
Page 1
ension or lenn one or morent marks fothe type o
field. For leniameter (Hoer (GC) of thblank along urements ars equal to th
n, the verticaens blank. Foiameter (Veer (GC) of th
6
s e r
of s r e a e e
al r r e
3.
lens blverticain Figu
Figur
.3.9. Specify
3.3.9.1
3.3.9.2
lank to any pal (90°) axis cure 12.
re 12 Specifyi
ying segment
1. Lined mult
The width style lensesthe horizonedges of the
Figure 13
2. Lined trifoc
The intermvertical sep
physical encrocontaining th
ng the vertica
t geometry
ifocal segmen
of lined muls, shall be spental distance be segment bou
Specifying th
cal intermedia
mediate heighparation betwe
Verti
cal D
iam
eter
oachment thae geometric c
al diameter of
nt width (Seg
ltifocal segmeecified as the between two undary or ink
he segment wi
ate height (In
ht of lined trieen a line tan
L
at obstructs thcenter. These
f a lens blank
Wd)
ents, with thewidest horizoparallel lines
k markings (if
idth of a lined
nt Ht)
ifocal segmenngent to the up
enticular Li
GC
Seg W
he optical use diameter me
k
e exception oontal dimens
s tangent to thf blended), as
d (flat-top) mu
nts shall be sppermost edg
ip
SC
Width
e of the lens easurements a
of full-width sion of the seghe right and ls illustrated in
ultifocal
specified as tge (or border)
Page 1
blank along are illustrated
or Executivegment. This ileft outermosn Figure 13.
the minimum) of the bifoca
7
a d
e-s
st
m al
3.
3.3.9.3
.3.10. Specify
For sewithinspecififrom le
The ocalculasurfaceclearanthe reathe len
segment ansegment, as
Figure 14
3. Fused glass
The segmenof the segmresultant op
ying the geom
mi-finished len the lens blanied to charactens surfacing
bject clearaations from te at the geomnce representar boundary ons blank, as ill
nd a horizonts illustrated in
Intermediate
s segment thic
nt thickness oment button ptical center o
metry an imbe
ens blanks thnk that must terize the thr
g, relative to th
ance shall bthe front surfmetric centerts a uniform dof the imbeddlustrated in F
I
tal line tangenn Figure 14.
e height of a li
ckness (Seg T
of fused glassat the opticaof the combin
edded object (
hat have a polabe avoided du
ree-dimensionhe front surfa
be specified aface of the ler (GC) of thedistance from
ded object regFigure 15.
ntermed.Height
nt to the upp
ined (flat-top
Thk)
s multifocal leal center of tned segment a
(Obj Clear an
arized film, lauring the lennal region of ace.
as the minimens blank aloe lens blank.m the front sugion is nomin
Seg W
permost edge
p) trifocal lens
enses shall bethe segment. and distance p
nd Obj Rad)
aminate layerns surfacing p
the lens blan
mum distanceong an axis pUnless other
urface over thnally equally to
SC
Width
e (or border)
s
e specified as(Note that th
portion.)
r, or other imrocess, dimen
nk that should
e to use for lperpendicularrwise specifie
he entire lens o the front su
Page 18
of the trifoca
the thickneshis is not th
mbedded objecnsions may bd be excluded
lens surfacingr to the froned, the objecblank, so tha
urface curve o
8
al
s e
ct e d
g nt ct at of
Figur
Additiobject radiuregionaxis pecurvatblank, radiusfrom th
Figur
re 15 Specifyin
onally, an opregion, whe
us shall be spen to exclude ferpendicular ture, such as
the object ra is not specifihe front surfa
re 16 Specifyi
Unifor
C
ng the uniform
tional paramen a uniform ecified as thefrom lens surto the front sa film or laye
adius may be fied, the objecace) over the l
ng the radius
m
NoTo
learanceRadius
m clearance o
eter may be sclearance fr
e radius of therfacing as mesurface at the er that followdefined by th
ct clearance dlens blank.
s of an object
NormalTo Front
GormalFront
of an object im
specified thatrom the frone spherical cu
easured from geometric ce
ws the nominahis curvature
distance shall
imbedded wi
GC
ImObje
GC
ImbeddObject R
mbedded with
t defines the rnt surface wilurve that bou
the object clenter. For imbal shape of th
e as illustratedbe assumed
ithin the lens
mbeddedect Region
dedRegion
OCle
hin the lens b
rear curve of ll not suffice
unds the threelearance distabedded objecthe front surfad in Figure 16to be uniform
blank
ObjectClearanc
Objectearance
Page 19
blank
the imbeddede. The objece-dimensionaance along ants with knownace of the len6. If an objec
m (equidistan
ce
9
d ct al n n s
ct nt
4. Describ
The geomdescribedto sag heig
4.1. G
Thch“CCcococoSeS
Thapshnreinn
3
4
5
4
bing the G
metry of nond using sag height data prov
Guidelines a
he data descrharacters conCR” (carriagearriage returontains sag dommas. The contain fields ection 3.2: Mtyle. The seco
he following ppear in the fhould be suppot be applicaequire an entndicated in thot applicable
# ? Fi
1 M Ba
2 Ad
3 M Ra
4 An
5 M Sa
.1.1. Sag he
Generalenseswhoseadd po
1.
2.
3.
Startinangle v
Base
1st Ba
1st Ba
1st Ba
1st Ba
1st Ba
Geometry
-spherical suight data as s
vided in electr
and file form
ribed herein nstrained to the return), “LFrn/line feed pdata for varioucharacteristicindicating th
MFG, Categoond record sh
data field entfile—is providplied in the fiable for all letry for most,
he “?” columnto rotational
eld Label
ase
dd
adius
ngle
g
eight data for
al (or non-ro, require both sag height d
ower are also
For each ba
For each ba
For each ba
ng with the lvalue, the sag
e
ase
ase
ase
ase
ase
of Non-Sp
urfaces, inclupecified below
ronic (file) for
mat for desc
shall be conthe range of 32F” (line feedpairs divide us points on
cs of each fieldhe manufactury, Class, D
hall be a head
tries shall be pded, as well asield, and any ens styles, an though not with the lettelly-symmetric
Descripti
Nominal b
Add power
Increment
Increment
Sag height
general (non-
otationally-syh radius and ata vary fromrequired. The
ase curve, add
ase curve and
ase curve, sag
owest noming height data s
Add
1st Add
1st Add
1st Add
1st Add
nth Add
pherical S
ding aspheriw. Please noterm.
ribing the g
tained in an A2 to 127 (the s), and “SUB”the file intothe lens blan
d are describerer, style, anescription,
der row contai
provided in ths a descriptioliteral entrie
nd should be necessarily a
er ‘M’ for macal surfaces, l
ion / Defini
base curve
r (when appli
tal radius (mm
tal angle (°),
t at radius and
-rotationally-
ymmetrical) angular sag
m add power te hierarchy of
d power (when
add power, s
g heights for e
nal base curveshall be provi
Radi
1st Ra
1st Ra
nth R
nth R
1st Ra
Surfaces
ic and progree that the form
geometry of
ASCII text filset of printabl” (used to m
o lines, each nk. Each recoed here and i
nd type of lenMaterial, M
ining all of th
the order showon / definitiones that should
left blank (tall, spectacle ndatory. For like single vis
ition Lit
icable)
m), 15
000
d angle
-symmetrical)
surfaces, likdata. In the cto add power,f levels for thi
n applicable)
sag heights fo
every add pow
ve, add powerided in the fol
dius
adius
adius
Radius
Radius
adius
essive additiomat described
f non-spheri
le, which is ale characters)
mark the end of which co
ord is dividedin the table bens using the fMaterial Brahe field labels,
wn below. Thn of the field,d appear in ththat is, “,,”).
lenses of anr instance, thesion lenses.
terals Dat
Num
Num
Num
Num
Num
) surfaces
ke those usedcase of multi, the sag heigis data shall b
, and radius,
r every radius
wer—at every r
r, incrementallowing tabula
Angle
1st Angle
nth Angle
1st Angle
nth Angle
1st Angle
on lens surfad below appli
ical surface
a stream of ei) and the cont
of an MS-Dmprises a re
d into fields,elow. The firsfirst eight fieland, Produc, as indicated
he field’s label the type of ehe field. CertaFields that s
ny style or tye Add and An
ta Type
meric, 2-decim
meric, 2-decim
meric, 2-decim
meric, 2-decim
meric, 2-decim
d for progresifocal or progght data for eabe:
sag heights fo
s—at every an
radius and an
al radius, andar format:
Sag
Sag H
Sag H
Sag H
Sag H
Sag H
Page 20
aces, shall bies specifically
es
ight-bit ASCItrol character
DOS text file)ecord, which, delimited byst record shallds defined in
ct Name, andbelow.
l—as it shouldentry data thaain fields may
shall generallyype have beenngle fields ar
mal
mal
mal
mal
mal
ssive additiongressive lenseach individua
or every angle
ngle
ngle
d incrementa
Height
Height
Height
Height
Height
0
e y
I s ). h y ll n d
d at y y n e
n s
al
e
al
4
4.2. G
Epeillprremfr
F
Base
1st Ba
1st Ba
1st Ba
nth Ba
nth Ba
nth Ba
nth Ba
nth Ba
nth Ba
nth Ba
nth Ba
Where
.1.2. Sag he
Rotatiradial hierarc
1.
Startinprovid
Base
1st Ba
1st Ba
Nth B
Nth B
Guidelines fo
ach sag valuerpendicularllustrated in rocessing andequired. Here
meridian (fromrom meridian
Figure 17 Sag
e
ase
ase
ase
ase
ase
ase
ase
ase
ase
ase
ase
e ‘n’ simply re
eight data for
ionally-symmsag data. In
chy of levels f
For each ba
ng with the loded in the follo
e
ase
ase
Base
Base
or specifyin
e is the heigly from a plaFigure 17. T
d thickness cae, a section im 0° to 360°) n to meridian,
g height of len
SagHeig
Add
nth Add
nth Add
nth Add
1st Add
1st Add
1st Add
1st Add
nth Add
nth Add
nth Add
nth Add
epresents the
rotationally-s
metrical surfan this case, tfor this data s
ase, sag heigh
owest nominaowing tabular
Add
ng sag heigh
ght of the lenane tangent tTo describe aalculations, ms defined as aof the lens. F data from mu
ns surface at th
gght
Radi
1st Ra
nth R
nth R
1st Ra
1st Ra
nth R
nth R
1st Ra
1st Ra
nth R
nth R
any subseque
symmetrical s
ces, like thoshe Angle an
shall be:
hts at every ra
al base curve r format:
Radi
1st Ra
nth R
1st Ra
nth R
ht data
ns surface at to the prism a non-spheric
multiple sag hea plane perpeFor non-rotatiultiple section
he semi-diam
r
NormalTo Front
dius
adius
Radius
Radius
adius
adius
Radius
Radius
adius
adius
Radius
Radius
ent values abo
surfaces
e used for sinnd Add field
dius
and incremen
dius
adius
Radius
adius
Radius
a given semreference po
cal surface teights throug
endicular to thionally-symmns are also ar
meter r
PRP
Angle
nth Angle
1st Angle
nth Angle
1st Angle
nth Angle
1st Angle
nth Angle
1st Angle
nth Angle
1st Angle
nth Angle
ove 1.
ngle vision asds should be
ntal radius, th
Angle
mi-diameter (oint of the leto an acceptagh a given seche tangent pl
metrical surfacre required.
Surface
Sag
Sag H
Sag H
Sag H
Sag H
Sag H
Sag H
Sag H
Sag H
Sag H
Sag H
Sag H
spheric lensesleft blank (i
he sag height
Sag
Sag H
Sag H
Sag H
Sag H
or radius) r,ens design. Table level of
ction of the leane and contces, whose sa
Page 2
Height
Height
Height
Height
Height
Height
Height
Height
Height
Height
Height
s, require onlyi.e., “,,”). Th
t data shall b
Height
Height
Height
Height
as measuredThis has beenf accuracy foens surface araining a given
ag heights vary
1
y e
e
d n r e n y
N
4
4
Numeric value
.2.1. For rot
Since sno par
The raradial See Fig
Figur
.2.2. For no
The sa15° antermin
The rasymmeprism
es and text sho
tationally-sym
sag values thrticular orient
adial (or tangeincrements,
gure 18.
re 18 Radial m
on-rotationall
ag heights of nngular incremnating at the 3
adial (or tanetrical surfacreference poi
Δ
ould adhere t
mmetrical sur
rough each mtation needs t
ential) sag valbeginning 15
measurement
ly-symmetrica
non-rotationaments, begin345° meridian
ngential) sag ces shall be gint (PRP) of th
Δr = 2.5 mm
o the sign con
rfaces:
meridional secto be expresse
lues of rotatio.0 mm from
increments (
al surfaces:
ally symmetrinning from tn. This has be
heights throiven in 2.5-mhe lens design
m
nvention deve
ction of rotated or implied.
onally-symmethe prism re
(r) for surfac
ical surfaces sthe 000° (naeen illustrated
ough each mmm radial incn.
PRP
1
eloped in Sect
tionally-symm.
etrical surfaceeference point
ces
shall be givenasal) meridiad in Figure 19
meridional secrements, beg
15 mm
tion 2.2.
metrical surfa
es shall be givt (PRP) of th
n for meridionan of the ri
9.
ection of nonginning 15.0
Page 2
aces are equal
ven in 2.5-mmhe lens design
nal sections inight lens and
n-rotationallymm from th
2
l,
m n.
n d
y-e
Figurre 19 Angularsurface
18
r measuremenes
80°
nt increments
PRP
2
s () for gene
P
90°
270°
eral (non-rota
Δ
ationally-sym
Δθ = 15°0°
Page 23
mmetrical)
3
5.
Standa
The examdescriptio
5.1. F
Thm
ard File Fo
mples below shon files describ
File example
he following manufacturer:
ormat Exa
hould serve abed in this St
es for descri
represents w
…
Prod
uct N
ame,
M
ater
ial B
rand
, M
ater
ial,
Des
crip
tion,
C
lass
, M
FG,
amples
as paradigms tandard.
ibing lens bl
what a file fr
…
…
…
“Per
cept
a”,
“Per
cept
a”,
“SV
ViZi
o”,
“Titi
G”
“Spe
ctra
lite”
,
“CR
39”,
“MR
7”,
“CR
307”
“PM
”,
“PL”
,
“PU
”,
“PL”
“Per
cept
a Sp
ect T
rans
”,
“Per
cept
a H
ard
Res
in”,
“SV
ViZi
o 1.
66”,
“SV
Titi
G”
“SFN
”,
“SFN
”,
“FN
T”,
“FIN
”
“SO
USA
”,
“SO
USA
”,
“SO
USA
”,
“SO
USA
”
for creating a
lank specifi
ragment of le
…
…
…
“Tra
nsiti
ons
Gra
y”,
“FT3
5 Bi
foca
l”,
“Asp
heric
FT2
8”,
“ SV
Hi-D
rop”
“CR
307”
,
“CR
39”,
“Pol
ycar
bona
te”,
“ CR
39”
“PL”
,
“PL”
,
“PO
”,
“ PL”
“SV
Tran
sitio
ns G
ray”
,
“FT3
5 Bi
foca
l Har
d R
esin
”,
“Asp
heric
FT2
8 Bi
foca
l Pol
y”,
“ SV
Hi-D
rop”
“FIN
”,
“SFN
”,
“SFN
”,
“ SFN
”
“SO
USA
”,
“SO
USA
”,
“SO
USA
”,
“ SO
USA
”
and dissemin
ications and
ens specificat
…
…
…
…
SV H
i-Dro
p,
“Occ
up F
T25/
28”,
“Rou
nd S
eg 2
2”,
…
CR
39,
“CR
39”,
“Cro
wn
Gla
ss”,
…
PL,
“PL”
,
“GL”
,
…
SV H
i-Dro
p,
“Occ
upat
iona
l Fla
ttop
25/2
8”,
“Gla
ss R
ound
Seg
22
Bifo
cal”,
…
SFN
,
“SFN
”,
“SFN
”,
…
SOU
SA,
“SO
USA
”,
“SO
USA
”,
…
nating the len
d attributes
tion data mig
ns specificatio
ght look like
Page 24
on and surfac
e for a typica
4
e
al
5.2. F
Thw
File example
he following with a 6.00 bas
Base,
6.00,
6.00,
6.00,
6.00,
6.00,
6.00,
6.00,
6.00,
6.00,
6.00,
6.00,
6.00,
…
es for descri
represents wse curve and a
, Add
, 1.00
, 1.00
, 1.00
, 1.00
, 1.00
, 1.00
, 1.25
, 1.25
, 1.25
, 1.25
, 1.25
, …
…
ibing the ge
what a file fraga +1.00 add p
d, R
0, 15
0, 15
0, 15
0, 17
0, 17
0, …
5, 15
5, 15
5, 17
5, 17
5, …
…
…
eometry of n
gment of sag progressive po
Radius,
5.0,
5.0,
5.0,
7.5,
7.5,
…
5.0,
5.0,
7.5,
7.5,
…
…
…
non-spheric
data might lower:
Angle,
0,
15,
…
0,
…
…
0,
…
0,
…
…
…
…
cal surfaces
look like for a
Sag,
3.17,
3.56,
…
4.01,
…
…
3.20,
…
4.16,
…
…
…
…
a progressive
Page 2
e addition len
5
s
6. Literal
The indicein describused as litabbreviatiliterals, pl
MTh22A(7m
6.1. F
Fprlale3—
Abe(didcl
C
A
A
A
A
B
B
C
D
G
G
G
G
M
P
P
P
R
R
Abbrevia
es below reprbing the technterals for the ions (for newlease contact
Michael Vitalehe Vision Cou25 Reinekers
Alexandria, VA703) 548-268
mvitale@thevi
Filter Color A
or absorptiveroperties of t
ast character sens. This valu—with the low
Although optioe used to idedarkened) stadentifies the clear or nearly
Color
Amber
Amethyst
Aquamarine
Autumn Gold
Blue
Brown
Copper
Didymium
Gold
Green
Green-Gray
Gray
Melanin
Pewter
Pink
Purple
Rainbow
Red
ations
resent the listnical attributeFilter (Filter
w products or the Vision Co
, ABOM uncil Lane, Suite 7
A 22314 84 isioncouncil.o
Abbreviatio
e lenses with che lens withishall be an in
ue, which is dwer values rep
onal for photontify the colo
ates. When oncolor and traso in the inac
d
ts of literal abes of lenses,
r) and Manufacompanies),
ouncil:
700
org
ons (Filter)
color, 4-charan the Filter
nteger value (determined atpresenting hig
ochromic lensor and transmnly a single 6ansmittance octivated (fade
bbreviations cas of the versacturer or Madelete existin
acter literals field. The firsn) from 0 thr
t the manufacgher levels of
ses, two sepamittance of th6-character litof the lens ined) state.
Literal
AMBn
AMTn
AQUn
ATGn
BLUn
BRNn
COPn
DIDn
GLDn
GRNn
G15n
GRYn
MELn
PEWn
PNKn
PURn
RNBn
REDn
currently acknsion date of tanufacturer bng abbreviatio
shall be usedst 3 characterrough 4 descrcturer’s discref transmittanc
arate 4-charache lens in botteral is suppli
n the activated
nowledged bythis documen
brand (MFG) ons, or to obt
d to identify thrs shall indicaribing the traetion, most cce and vice ve
cter literals—th the inactivied, it shall bd (darkened)
Exam
AMB2
AMT1
AQU2
ATG3
BLU3
BRN2
COP1
DID2
GLD3
GRN1
G153
GRY3
MEL3
PEW1
PNK2
PUR3
RNB2
RED1
y the Vision Cnt. These abb
fields. To creain the most
he color and ate the color
ansmittance ocommonly ranersa.
separated by vated (faded) be assumed th) state and th
mple
Page 2
Council for usbreviations areate additiona
current list o
transmittancname and th
or shade of thnges from 1 to
a space—mayand activated
hat this literahat the lens i
6
e e
al of
e e e o
y d al s
C
R
S
S
T
T
U
Y
O
6.2. M
TM
C
A
A
C
C
C
D
E
E
E
E
G
H
I
I
I
K
K
L
L
L
N
N
O
P
P
P
P
R
Color
Rose
Sapphire
Silver
Tan
Therminon
Unisol
Yellow
Orange
Manufacture
o identify uniMFG field. No
Company N
American Optica
Augen Opticos d
Carl Zeiss (Germ
Centennial Optic
Conant
D & D Optical Su
Essilor France
Essilor of Americ
Eye Solutions In
Eyenavision
GKB Hitech Len
Hoya Corp/Hoya
Indo Lens Group
Intercast Europe
International Len
Kaenon Polarize
Kbco Polarized L
Landon Lens Ma
Lehrer Brillen-Pe
Lensco
Nassau Lens Co
Nikon Essilor Co
Optima, Inc
Pentax Vision
Polycore Optica
Prio Corporation
Private Label Op
Rodenstock Ger
er Abbrevia
iquely the lente: The below l
Name and Re
al Corporation
dba; Blue Cove
many)
cal
upply
ca
nc
ses Pvt Ltd
a Lens of Americ
p SLU
e SRL
ns Company
ed
Lenses
anufacturing Cor
erfection Werks
ompany
o LTD
l Pte Ltd
n
ptical
rmany
ations (MFG
ns manufactulist is provided
egion
ca
rp
(LBI)
Literal
ROSn
SAPn
SILn
TANn
THRn
UNIn
YELn
ORGn
G)
urer or brand,d as an exampl
, a 6-charactele only and is n
Lite
AO
AUG
ZSS
CEN
CON
WX
ESS
ESS
BLUT
EYE
GKB
HOY
IND
ICG
INLE
KP
KBC
LAN
LBI
LNS
NAS
NIKO
OPT
PNT
POU
PRIO
SLIM
ROD
Exam
ROS2
SAP2
SIL3
TAN3
THR1
UNI2
YEL0
ORG2
er or less liternot intended to
eral
GEN
NT
NANT
TEC
NV8
B
Y
and INT
ECO
C
and NASSAU
ON
T
USA
O
M N LITE
D
mple
ral shall be prbe a complete
Page 2
rovided in thlist.
7
e
END
C
R
S
S
S
S
S
S
S
S
S
T
T
T
U
V
V
V
V
X
Y
Company N
Rozin Optical Int
Scopus Optical
Seiko Optical Pr
Shamir Insight In
Shore Lens
Signet Armorlite
Silor/Essilor
Sola Optical USA
Somo Optical
Specialty Lens C
Techtran Polylen
Thai Optical Gro
Tokai Optical C
UVCO (United V
Varilux/Essilor
Vision Dynamics
Vision Warehou
Vision-Ease Len
X-Cel Optical
Younger Optics
Name and Re
ternational LLC
Industry
roducts
nc.
A, Inc
Corp/Essilor
nses LTD
oup Public Co
o Ltd
Vision Corp)
s
se LLC
ns
egion Lite
ROZ
SCO
SKO
SHA
SHO
SAU
ESS
SOU
SOM
SLC
TPL
TOG
TOK
UVC
VAR
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VW
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YNG
eral
ZIN
OPUS
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AMIR
ORE and SHO
SA ans SA
USA
MUSA and SOM
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Page 288
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