luminous efficacy


Also found in: Thesaurus, Medical, Legal, Encyclopedia, Wikipedia.

luminous efficacy

n
1. (Units) the quotient of the luminous flux of a radiation and its corresponding radiant flux. Symbol: K
2. (Units) the quotient of the luminous flux emitted by a source of radiation and the power it consumes. It is measured in lumens per watt. Symbol: ηv or Φv
References in periodicals archive ?
white light emitting diode with minimum luminous efficacy lithium battery.
His latest invention is a blue laser, also convertible to white light, with twice the luminous efficacy of an LED.
Luminous efficacy of LEDs that can be attained until 2015 is based on the expectation that LEDs will be able to attain 50 % to 70 % of the theoretical maximum.
These light engines feature patented technologies that encompass non-imaging optics with chip-on-board LED arrays on metal core circuit boards to provide both luminous efficacy and high thermal management.
Lumisil 885 is an addition-curing silicone rubber of medium viscosity that cures to yield a very transparent, high-durometer elastomer that confers high luminous efficacy in optical applications.
Power consumption, luminous flux, correlated color temperature, CIE Color Rendering Index (CIE CRI) and luminous efficacy of the luminaires were measured using an integrating sphere that measures the spectral power distribution in the wavelength range of 350 to 1050 nm.
GL-TL0606 brings with it a large improvement in luminous efficacy and luminous flux when compared to T8 or T5 fluorescent fixtures.
PIDA's studies show that these suppliers are mostly supplying bulbs rated from 6 to 12 watts as replacements for incandescent bulbs rated from 40 to 60 watts, with their luminous efficacy reaching between 40 and 100 lumens per watt.
LEDs are much more energy efficient than traditional light sources, so the GL-PL0606AD panels offer a luminous efficacy of up to 68 lumens per watt, even as they reduce power usage.
Cree TrueWhite Technology delivers beautiful light and maintains colour consistency over the rated lifetime of the product, all while maintaining high luminous efficacy a true no compromise solution.
These LED flood lights consume less power with a luminous efficacy of up to 67.
This requirement adversely affects the luminous efficacy of the LEDs.