LM-79 Moving Detector Goniophotometer (Mirror Type C)
LSG-6000
High Precision Rotation Luminaire Goniophotometer
LSG-1890B
High Precision Rotation Luminaire Goniospectroradiometer
LSG-1890BCCD
Goniophotometer for Automotive and Signal Lamps
LSG-1950
Goniophotometer for Traffic Signal Lamps
LSG-1950S
Compact Goniophotometer
LSG-1200A
Near Field Moving Detector Goniophotometer
LSG-1900B
LEDs and Luminaire Test Solutions
LM-79 and LM-80 Test Solutions
LED Driver Test Solutions
Household Appliances Test Solutions
Mobile and Network Test Solutions
Automotive Electronics Test Solutions
Audio-Video and IT Test Solutions
Cable and Wire Test Solutions
Plugs and Sockets Test Solutions
Power Switch Test Solutions
Transformer Test Solutions
Electric Toys Test Solutions
Energy Meter Test Solutions
Motor-Operated Tool Test Solutions
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The visual brightness of a light source depends not only on the amount of radiation it emits
but also on its spectral composition and on the visual response function of the observer
viewing it. Because human visual response varies at different light levels and from person to
person, precise photometry requires the definition of representative standard observers. The CIE system of physical photometry specifies procedures for the quantitative evaluation of
optical radiation in terms of the spectral luminous efficiency functions of two such standard
observers. One, V(λ), represents photopic vision and the other, V(λ), scotopic vision. Used in
conjunction with the SI photometric base unit, the candela, these functions constitute a
system that enables the values of photometric quantities for all types of luminous source to be
precisely determined, regardless of the spectral composition of the radiation emitted.
LISUN following instruments fully meet CIE S 010/E Photometry-the CIE System of Physical Photometry:
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