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Optical Calibration
 

Standards and instruments used:
Advanced technology based high accuracy Integrating sphere with standard Spectrophotocolorimeter interfaced with PC, 3 Meter Illuminance Bench with Reference Standard Lamp.

Parameters:
Luminous Flux, Colour Temperature, Colour Co-ordinates, Illuminance, Luminous Intensity.

Instruments for calibration:
Luminous flux of GLS (Tungsten filament lamps), CFL (Compact fluorescent lamps), TFL (Tubular fluorescent lamps), HPMVL (High pressure mercury vapor lamp), HPSVL (High pressure sodium vapor lamps), MHL (Metal halide lamps),   Color Co-ordinates, Color temperature. Lux Meter etc.




Scope of Optical Calibration

S. No.  
Parameters

Ranges
CMC*%

Method

Standard Instrument Used
 
 


1. 
Luminous Flux
 
O
N
L
Y

A
T

L
A
B
Inter-nationally accepted
methods /
spectro-
photometry
 

Using standard standard Lamps & Integrating sphere with standard spectrophoto-coloriemeter, ab-inition method & substitution method
 

 

 

 

Using standard lamps & integrating sphere with standard spectrophotocolorimeter,ab-initio method & substitution method

Using illuminance meter with intensity standard lamp WI41G lamp by direct method

Tungsten Filament  Lamps 15 W to 200 W
115-3400lm
3-2.5%
Compact fluorescent   lamp (CFL) 5-26 W
200-1600lm
3-2.5%
Tubular fluorescent lamp (TFL) 6-40W
150-4000lm
3-2.5%
High Pressure mercury vapour lamp(HPMVL) 80-400 W
2000-30000lm
3.5-2.5%
High pressure sodium vapor lamp(HPSVL) 70-400 W
4800-60000lm
3.5-2.5%
Metal halide lamp(MHL) 70-400 W
4800-60000lm
3.5-2.5%
2. Corelated color temp & Color coordinates 1500- 25000 K 0.005
3. Illuminance 1 to 25000 lx 2.8- 2.5%
4. Luminous Intensity  01 cd to 1000 cd 2.8 % to 2.25%
* CMC claimed at best measurement point        

 

 
 
     
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Contact Details
   
 

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infohplindia@gmail.com 
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