luminous efficiency


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luminous efficiency

n.
The ratio of the total luminous flux to the total radiant flux of an emitting source.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

luminous efficiency

n
(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
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
Cadmium sulfide when used as fluorescent marker offers many advantages such as high luminous efficiency, fluorspar narrow spectral lines, adjustable luminous color, relatively single excitation spectrum, and good light stability.
The main advantages of LED lamps are high luminous efficiency, long lifetime and ease of changing both the colour and intensity of the produced light.
The silicon photodiode is adjusted precisely to spectral luminous efficiency and has a light-sensitive surface of only 6 x 6mm.
Also, the MicroLED screen excels in durability and effectiveness, including luminous efficiency, the light source lifetime and power consumption, setting the standard for future screen technology.
Kwon, "Effect of phosphor geometry on the luminous efficiency of high-power white light-emitting diodes with excellent color rendering property," Optics Letters, vol.
"It has a wider range of color or ranges, so it gives accurate reds, blues or greens with their accurate gradients." Quantum dots possess high luminous efficiency, precise color expression and excellent durability.
Such as luminous efficiency deterioration, lifespan decreasing, color shifting, so on and so forth.
terms of the photopic luminous efficiency function [V([lambda])], it actually represents the eye's spectralsensitivity to light by only one of several channels discovered by neuroscience research.
Nevertheless, if the Rubrene is doped into the DPVBi layer, it will cause the attenuation in luminous efficiency of DVPBi.
As an upgrading light source in the 21st century, LEDs, comparing the HPS lamps or other existing light sources, provide a much longer lifetime (more than 5 times longer than HPS lamps), high luminous efficiency, and more adjustable, more controllable, and efficient form of lighting [5].
Indeed, the latter had a power of 1000 W, which means, considering luminous efficiency of 20 lm/W, a radiant flux of 20000 lm.