luminous efficacy

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efficacy, luminous

The amount of light emitted by a lamp for each watt of power consumed. It is expressed in lumens/watt.
References in periodicals archive ?
The dependence of luminous efficacy on the CCT setting is presented in Fig.
e], and the spectral luminous efficacy of the radiation at the frequency of the radiation, K, by the equation [I.
As a result, it achieves a luminous efficacy of 93.
LEDs have a significantly higher luminous efficacy, on par with compact fluorescent replacements.
Over the past 10 years, the rate of progress of OLED technology has been enormous, with luminous efficacy increasing by almost two orders of magnitude.
5W GL-AR111-V2-12 LED lamps offer a luminous efficacy of up to 86 lumens per watt and have 80% lower energy usage when compared to traditional lamps.
Compared to equivalent mercury flood lights, these LED flood lights consume far less power for the same light output, with a luminous efficacy of up to 67.
Parametric failures include degradation or shifts in luminous flux, luminous intensity, correlated color temperature (CCT), color rendition, and luminous efficacy.
Oversupply, compounded by improved luminous efficacy of LEDs, sharply brought down prices of the devices, compelling many South Korean LED makers to turn to lighting applications to ease pressure on their backlight inventories.
Industry-Leading 91 lm/W Luminous Efficacy in the 25W-Class Achieved
Furthermore, the brightness of LEDs typically varies, from lot to lot, more than forward voltage, implying that luminous efficacy is the main variable with respect to manufacturing output.
2) The metric for this is luminous efficacy, expressed in lumens per watt (lm/W).