Measurement Spot Size

Aperture
Accessory Working Distance 0.5°
MS-75
(355 mm to infinity)
355 mm

305 m
5.25 mm

5.32 m
2.63 mm

2.66 m
SL-0.5x 94.1 mm
to
137 mm
1.5 mm
to
2.54 mm
0.75 mm
to
1.27 mm
SL-1x 46 mm
to
66 mm
0.890 mm
to
1.32 mm
0.445 mm
to
0.660 mm
MS-2.5x 46 mm 0.51 mm 0.225 mm
MS-5x 28 mm 0.289 mm 0.145 mm
MS-7.5
(100 mm to infinity)
100 mm

30.5 m
17.5 mm

53 cm
8.75 mm

26.6 cm
LA-655 Contact 13.2 mm 13.2 mm
FP-655 Contact 3.17 mm 3.17 mm

Luminance Range (fL)
Aperture
Accessory 0.5°
MS-75 0.2 to 30,000 0.8 to 120,000
SL-0.5x 0.2 to 30,000 0.8 to 120,000
SL-1x 0.2 to 30,000 0.8 to 120,000
MS-2.5x 0.5 to 72,000 2.0 to 288,000
MS-5x 0.8 to 120,000 3.2 to 480,000
MS-7.5 0.2 to 30,000 0.8 to 120,000
LA-655 0.2 to 30,000 0.8 to 120,000
FP-655 0.5 to 75,000 1.6 to 300,000
CR-655 0.4 to 60,000 fc 1.6 to 240,000 fc
Sensitivities are for 10:1 signal to RMS noise against an Illuminant A based NIST traceable luminance standard
Note:
All specifications are subject to change without notice.
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* NEW * The patented LR-127 LED Analyzer is an optical accessory designed to test discrete LEDs to CIE 127 Technical Report - Measurement of LEDs.
PR-655 / PR-670 / PR-680 Product Comparison