TechnoOptis Optical Instrument Comparison

Westar carries a full line of TechnoOptis optical instruments. If you need to measure light, we can help you select which TechnoOptis photometer, colorimeter, spectroradiometer, color video photometer, or response detector is right for your application.

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SpecificationsSR SeriesBM Series
Optical SystemSR-5ASSR-5ASR-5SSR-5BM-5ACBM-7ACBM-9A
Objective Lensf=82mm F2.5f=80mm F2.5f=36mm F2.5
Eyepiece LensView field 5°,
Diopter adjustment range ±5 diopter		View field 5°,
Diopter adjustment range ±5 diopter		View field 5°
Apertures2° / 1° / 0.2°/ 0.1°3° / 2° / 1° / 0.2°/ 0.1°2° / 1° / 0.2°/ 0.1°2° / 1° / 0.2°
Measurement Distance250 mm to Inf.350 mm to Inf.
Spot Size at 1mSR-5ASSR-5ASR-5SSR-5BM-5ACBM-7ACBM-9A
2°32.2 mm32.8 mm32.3 mm
1°16.1 mm16.4 mm16.2 mm
0.2°3.2 mm3.3 mm3.23 mm
0.1°1.6 mm1.6 mmNA
Spot Size at 35cmSR-5ASSR-5ASR-5SSR-5BM-5ACBM-7ACBM-9A
2°10 mm10 mm9.5 mm
1°5 mm5 mm4.8 mm
0.2°1 mm1 mm0.95 mm
0.1°0.5 mm0.5 mmNA
Luminance RangeSR-5ASSR-5ASR-5SSR-5BM-5ACBM-7ACBM-9A
Min Lv (cd/m2)0.00010.00050.0010.0010.000050.010.01
Max Lv (cd/m2)500,000,0001,200,00012,000,00028,000,000
AccuracySR-5ASSR-5ASR-5SSR-5BM-5ACBM-7ACBM-9A
Luminance Accuracy±2% (for standard illuminant A)±4% (for standard illuminant A)±4% for L under 5 cd/m2, ±2% for L over 5 cd/m2±2% of reading ±2 digit
Color Accuracyx:±0.0015 y:±0.001 in 1931 CIE±0.002 in 1931 CIE x,y Space±0.005 in 1931 CIE x,y Space±0.002 in 1931 CIE x,y SpaceNA
More InfoSR-5ASSR-5ASR-5SSR-5BM-5ACBM-7ACBM-9A
Link to Product PageSR-5ASSR-5ASR-5SSR-5BM-5ACBM-7ACBM-9A