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luminous efficiency

   Also found in: Medical, Encyclopedia, Wikipedia 0.01 sec.
luminous efficiency
n.
The ratio of the total luminous flux to the total radiant flux of an emitting source.

luminous efficiency
n
(Mathematics & Measurements / Units) the efficiency of polychromatic radiation in producing a visual sensation. It is the radiant flux weighed according to the spectral luminous efficiencies of its constituent wavelengths divided by the corresponding radiant flux. Symbol V


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Several hundred micro-downlighters, deep-drawn from aluminium reflector material, and an inner reflector ensure glare-free lighting with outstanding luminous efficiency achieving a light output ratio of up to 90 per cent and turning a long, narrow light source into wide and flat illumination.
As a result, there is a growing interest in increasing their luminous efficiency through a better understanding of the processes that govem their operation.
The device also exhibits a high luminous efficiency of 65 candela per ampere (cd/A) and an external quantum efficiency of 18%, at 1,000 cd/m2, both characteristic features and benefits of phosphorescent OLED technology.
 
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