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luminous efficiency |
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luminous efficiency [′lü·mə·nəs i′fish·ən·sē]
(optics) Luminous efficiency Visual efficacy of visible radiation, a function of the spectral distribution of the source radiation in accordance with the “spectral luminous efficiency curve,’’ usually for the light-adapted eye or photopic vision, or in some instances for the dark-adapted eye or scotopic vision. The spectral luminous efficiency of radiant flux is the ratio of luminous efficacy for a given wavelength to the value of maximum luminous efficacy. It is a dimensionless ratio. See Luminous efficacy, Photometry luminous efficiency Same as luminous efficacy; also called the luminous coefficient. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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