Optical Emission Spectrometer

An emission spectrometer that generates a high-energy spark across an argon-filled gap between an electrode and a solid sample, causing emission of radiation from the excited sample surface and resulting in wavelengths characteristic of the elemental composition. (NCI Thesaurus)

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Optical Distortion Medical Device Problem

Issue associated with an optical defect in an image-forming system whereby the image is not the shape of an ideal image of…

Optical Disk Device Component

A data storage disk where the data is stored in a format to be read optically by a laser and receiver. …

Optical Discoloration Medical Device Problem

Issue associated with an optical streak or other pattern on the signal surface that causes a noticeable change of color from the…

Optical Density Measurement

A quantification of the amount of light that is absorbed by or transmitted through a substance.

Optical Decentration Medical Device Problem

Issue associated with being off-center of optical lenses.

Optical coherence tomography

A procedure that uses infrared light waves to give three-dimensional (3-D) pictures of structures inside tissues and organs. The pictures are made…