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6 terms
Photonics Dictionary: E
Clear All Filters x
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eccentricity
In the tolerancing of optical elements, the displacement of the optical axis from the mechanical axis.
edge enhancement
In image processing, any operation that strengthens information about the edges of objects displayed. Three types of spatial filtering are used: shift and difference, gradient and Laplacian.
episcope
->
opaque projector
An opaque projector is a device used for enlarging and projecting images from opaque objects such as printed pages, photographs, or three-dimensional objects onto a screen or surface. Unlike a...
equidensities
1. A contour map of a photographic deposit consisting of lines and curves that join points of equal density. 2. The portrayal of a photograph's points of equal density in hues of yellow, cyan and...
excimer laser coronary angioplasty
Excimer laser coronary angioplasty (ELCA) refers to a medical procedure used in the treatment of coronary artery disease. This technique involves the use of an excimer laser to perform angioplasty, a...
extramural absorption cement
A cement used to reduce crosstalk in fiber optic bundles or plates.
Photonics Dictionary
E
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