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AGLS Light Sensor
The AGLS light sensor contains a silicone photo diode that can be exposed to ambient light through an
optical filter, which very accurately simulates the spectral response of the human eye's photopic response,
in order to measure illuminance in lux units. A luminance adapter can be screwed onto the base unit in
front of the photo-diode for the measurement of luminance in cd/m2 units through an aperture with a 10-
mm diameter. Accu-Gold automatically detects the presence or absence of the luminance adapter and
automatically selects the appropriate units
Light Sensor
Luminance Range
Illuminance Range
Luminance Aperture
Calibration Uncertainty
Calibration Traceability
Photopic Response
Cosine Response
AGLS
2
0.05 to 50,000 cd/m
0.01 cd/m
0.05 to 50,000 lux
0.01 lux
Ø10 mm measuring field. Contact measurement focusing
lens 1:1.
<3% of value or 0.05, whichever is greater, relative to
Illuminant A.
Traceable to NIST and international standards.
<4% (Deviation from 1931 CIE photopic curve standard)
<4% (CIE f2 test)
Resolution
2
78
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