apparent luminance

apparent luminance

[ə′pa·rənt ′lü·mə·nəns]
(optics)
Luminance, created by air light, of that portion of the visual field subtended by a dark, distant object; that is, the light scattered into the eye by particles, including air molecules, lying along the optic path from eye to object.
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References in periodicals archive ?
Modulating the pulse width of the current controls the apparent luminance of the OLED, effectively varying the length of time that current is supplied to the OLED.