Compact Goniophotometer (LSG-1200/LSG-1200A) Brochure Global Office of Lisun Electronics Inc. http://www.Lisungroup.com Lisun Group (Hong Kong) Limited Add: Room C, 15/F Hua Chiao Commercial Center, 678 Nathan Road, Mongkok, Kowloon, Hong Kong Tel: 00852-68852050 Fax: 00852-30785638 Email: [email protected]Lisun Electronics (Shanghai) Co., Ltd Add: Room 1210, No. 9 Building, Jiangqiao Wanda Plaza, Hexuan Road, Jiading District, Shanghai, 201803, China Tel: +86(21)5108 3341 Fax: +86(21)5108 3342 Email: [email protected]Lisun Electronics Inc. (USA) Add: 445 S. Figueroa Street, Los Angeless, CA 90071, U.S.A. Email: [email protected]Lisun China Factory Add: NO. 37, Xiangyuan Road, Hangzhou City, Zhejiang Province, China Tel: +86-189-1799-6096 Email: [email protected]Lead in CFL & LED Test Instruments
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Compact Goniophotometer · (LSG-1200/LSG-1200A) The compact goniophotometer of LSG-1200/LSG-1200A, various dark rooms are selectable according to the size of test ed lamps. It is
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Compact Goniophotometer (LSG-1200/LSG-1200A)
Brochure
Global Office of Lisun Electronics Inc. http://www.Lisungroup.com
Lisun Group (Hong Kong) Limited Add: Room C, 15/F Hua Chiao Commercial Center, 678 Nathan Road, Mongkok, Kowloon, Hong Kong Tel: 00852-68852050 Fax: 00852-30785638 Email: [email protected]
distance d and the diaphragm D1. According to the square law of illumination
intensity and cosine, obtain the following formula:
E = I cos θ/ r2
Through measurement the Brightness contrast that can calculate the average light
intensity
I = E*r2 ( due to the tested device peak same as test system, so r is
aforementioned d).
Based on the above light intensity measuring principle, using a known light intensity
standard lamp calibration of this instrument after the measurement process in the
system to get the measured values multiplied by the scaling factor is in the device
under test under the conditions of illumination, and then were multiplied by the
square of different distances d get intensity.
Spatial light intensity distribution of the test Stepper electric motor movement control by microprocessor to make sure angle
precision strictly, measuring the various angles of the luminous intensity values.
Microprocessor will send sampling value to PC software by RS-232C, it will display
the distribution curve and important parameters after software calculate.
Spread angle and drift angle calculations From the measured spatial intensity distribution can get the opposite angle of half
maximum light intensity point:θ1, θ2, half-intensity angle θ (50%) = | θ2-θ1 |, can
also calculation θ(10%)、θ(25%) and θ(75%) as well as the same way. Drift angle
is included angle between peak value light intensity and machinery value.
Calculated luminous flux from the light intensity distribution curve Calculated the general luminous flux from the light intensity distribution curve, in
theory, should use the following formula
φ = ∫ Id ω
As can be seen, light intensity distribution curve can't express by mathematical
functional actually, and therefore need to use some methods of solution of the
integral equation. If the device under testing is set in the center of the sphere like
Picture3. Solid angle facing the center of a sphere can be used between the latitude
and the vertical angle θ and θ + δθ defined between the girdle to expression.
So the emergent luminous flux from girdle θ1 to θ2 as follow:
φ=∫ Id ω=∫2πIsinθdθ=2π(cosθ1-cosθ2)
Formula I(cd) express average light intensity in girdle, 2π(cosθ1-cosθ2) is modulus
Photometric ResultsCIE Class: Direct Total Rated Lamp Lumens: 304.0 lmMeasurement Flux: 304 lm Efficiency: 100%Downward Ratio: 100% Upward Ratio: 0%Field Angle: H164.9 V159.5 Beam Angle: H102.8 V100.5Luminaire Efficacy Rating (LER): 35 Central Intensity: 121.35 cdMax. Intensity: 127.67 cd Pos of Max. Intensity: H146 V1
Picture Of Luminaire Luminous Intensity Distribution Curve
0
180
90 90
75 75
105 105
60 60
45 45
30 30 15 15160
128
96
64
32
C0-C180 C90-C270
Unit: cd
C Plane (°):0.0-360.0: 1.0 Gamma Plane (°):0.0-90.0:1.0Test Lab: Philips Lab Test Device: LSG-1200ATest Type: TYPE C Distance: 1.000 mTemperature: 25 Humidity: 65Operator: Edmundo Felipe Inspector:
Lisun Electronics Inc.www.Lisungroup.comTel:+86(21)51083341Fax:+86(21)51083342 Page 2 of 119 Pages
Isocandela (rectangle)
80
60
40
20
0
-20
-40
-60
-80
-80 -60 -40 -20 0 20 40 60 80
Horizontal(Deg)
Ver
tica
l(D
eg)
13
20
32
518064
7789
109
Imax (100%): 128 cd
( 10%): 13 cd ( 16%): 20 cd( 25%): 32 cd ( 40%): 51 cd( 63%): 80 cd (100%): 128 cd( 50%): 64 cd ( 60%): 77 cd( 70%): 89 cd ( 85%): 109 cd
C Plane (°):0.0-360.0: 1.0 Gamma Plane (°):0.0-90.0:1.0Test Lab: Philips Lab Test Device: LSG-1200ATest Type: TYPE C Distance: 1.000 mTemperature: 25 Humidity: 65Operator: Edmundo Felipe Inspector:
Lisun Electronics Inc.www.Lisungroup.comTel:+86(21)51083341Fax:+86(21)51083342 Page 3 of 119 Pages
C Plane (°):0.0-360.0: 1.0 Gamma Plane (°):0.0-90.0:1.0Test Lab: Philips Lab Test Device: LSG-1200ATest Type: TYPE C Distance: 1.000 mTemperature: 25 Humidity: 65Operator: Edmundo Felipe Inspector:
Lisun Electronics Inc.www.Lisungroup.comTel:+86(21)51083341Fax:+86(21)51083342 Page 4 of 119 Pages
Illuminance at a Distance
Distance(m) E(lx) Dh(m) Dv(m) Eav(lx)
50.0 0.05 125.18 120.14 0.01
5.0 4.85 12.52 12.01 0.58
10.0 1.21 25.04 24.03 0.14
15.0 0.54 37.55 36.04 0.06
20.0 0.30 50.07 48.05 0.04
25.0 0.19 62.59 60.07 0.02
30.0 0.13 75.11 72.08 0.02
35.0 0.10 87.63 84.09 0.01
40.0 0.08 100.15 96.11 0.01
45.0 0.06 112.66 108.12 0.01
Beam Angle: H102.8 V100.5 Field Angle: H164.9 V159.5
Dh
Dv
C Plane (°):0.0-360.0: 1.0 Gamma Plane (°):0.0-90.0:1.0Test Lab: Philips Lab Test Device: LSG-1200ATest Type: TYPE C Distance: 1.000 mTemperature: 25 Humidity: 65Operator: Edmundo Felipe Inspector:
Lisun Electronics Inc.www.Lisungroup.comTel:+86(21)51083341Fax:+86(21)51083342 Page 5 of 119 Pages
C Plane (°):0.0-360.0: 1.0 Gamma Plane (°):0.0-90.0:1.0Test Lab: Philips Lab Test Device: LSG-1200ATest Type: TYPE C Distance: 1.000 mTemperature: 25 Humidity: 65Operator: Edmundo Felipe Inspector:
Lisun Electronics Inc.www.Lisungroup.comTel:+86(21)51083341Fax:+86(21)51083342 Page 6 of 119 Pages
C Plane (°):0.0-360.0: 1.0 Gamma Plane (°):0.0-90.0:1.0Test Lab: Philips Lab Test Device: LSG-1200ATest Type: TYPE C Distance: 1.000 mTemperature: 25 Humidity: 65Operator: Edmundo Felipe Inspector:
Lisun Electronics Inc.www.Lisungroup.comTel:+86(21)51083341Fax:+86(21)51083342 Page 7 of 119 Pages
C Plane (°):0.0-360.0: 1.0 Gamma Plane (°):0.0-90.0:1.0Test Lab: Philips Lab Test Device: LSG-1200ATest Type: TYPE C Distance: 1.000 mTemperature: 25 Humidity: 65Operator: Edmundo Felipe Inspector:
Lisun Electronics Inc.www.Lisungroup.comTel:+86(21)51083341Fax:+86(21)51083342 Page 8 of 119 Pages
C Plane (°):0.0-360.0: 1.0 Gamma Plane (°):0.0-90.0:1.0Test Lab: Philips Lab Test Device: LSG-1200ATest Type: TYPE C Distance: 1.000 mTemperature: 25 Humidity: 65Operator: Edmundo Felipe Inspector:
Lisun Electronics Inc.www.Lisungroup.comTel:+86(21)51083341Fax:+86(21)51083342 Page 9 of 119 Pages
C Plane (°):0.0-360.0: 1.0 Gamma Plane (°):0.0-90.0:1.0Test Lab: Philips Lab Test Device: LSG-1200ATest Type: TYPE C Distance: 1.000 mTemperature: 25 Humidity: 65Operator: Edmundo Felipe Inspector:
Lisun Electronics Inc.www.Lisungroup.comTel:+86(21)51083341Fax:+86(21)51083342 Page 10 of 119 Pages
C Plane (°):0.0-360.0: 1.0 Gamma Plane (°):0.0-90.0:1.0Test Lab: Philips Lab Test Device: LSG-1200ATest Type: TYPE C Distance: 1.000 mTemperature: 25 Humidity: 65Operator: Edmundo Felipe Inspector:
Lisun Electronics Inc.www.Lisungroup.comTel:+86(21)51083341Fax:+86(21)51083342 Page 11 of 119 Pages
C Plane (°):0.0-360.0: 1.0 Gamma Plane (°):0.0-90.0:1.0Test Lab: Philips Lab Test Device: LSG-1200ATest Type: TYPE C Distance: 1.000 mTemperature: 25 Humidity: 65Operator: Edmundo Felipe Inspector: