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LIGHT SOURCES DICTIONARY TERMS
bench photometerA device used to compare the luminous intensities of two sources by locating a point between the two light sources where the produced flux densities are equal. The luminous intensities of the two sources are proportional to the square of their...
free-space optics (FSO)A type of optical communications technology dealing with the use of lasers and other light sources to send telecommunication...
comparison lampA reference incandescent light source having a luminous intensity that is used in photometry for comparison of other light...
Lloyd's mirrorA mirror employed with a very high incidence angle to form a pair of coherent light sources by reflection, and therefore...
fluorescent whitening agents (FWA)Agents used for testing light sources and natural daylight with visual and instrumental assessment using a set of white...
wedge photometerA photometer that uses a wedge, marked to show its reduction of flux density, to make two light sources equal in intensity...
arc light sourceIn present usage, especially for spectroscopic identification, an arc between electrodes that serves as a radiation source....
photobiomodulationA light therapy that utilizes nonionizing light sources, including lasers, LEDs, and broadband light, in the visible and...
image plane holographyA hologram in which the image of an object, or the object itself, is located near the hologram recording plane, for optimum...
quantum dotsAlso known as QDs. Nanocrystals of semiconductor materials that fluoresce when excited by external light sources, primarily...
photonicsThe technology of generating and harnessing light and other forms of radiant energy whose quantum unit is the photon. The...
photodynamic therapy (PDT)A medical technology that uses lasers or other light sources in combination with photosensitizing drugs to treat cancerous...
photographic photometryA form of photometric measurement, often used with light sources that are transparent or fluctuating, in which a...

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