optical filter


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optical filter

A device that passes only a portion of the visible light spectrum. Absorption filters absorb the unwanted wavelengths. Interference filters employ the wave effects of constructive and destructive superposition to pass or inhibit appropriate wavelengths.
See also: filter
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References in periodicals archive ?
To provide a guideline for designing the optical filter's characteristics, we devise an optimal characteristic of the optical filter in the sense that, with a fixed passband of the optical filter, the second moment of the square of the interferogram is minimized.
The water produced by the system is much higher quality than Optical Filters had previously used.
DSI[R]), manufacturer of highly durable thin film optical coatings, introduces an enhanced capability to manufacture patterned optical filters.
The fluorometer can detect multiple fluorescent labels in a single biological test without optical filters.
Researchers from the Massachusetts Institute of Technology have now built a silicon device that integrates a photonic crystal with a light conduit, making a component that could lead to more efficient lasers and better optical filters.
Ion Tech is a supplier of ion beam deposition systems used to manufacture precise multi-layer optical filters used to extend the bandwidth of fiber optic telecommunications networks.
Moreover, the same technology may prove useful in fabricating diffraction gratings, optical storage materials, selective solar absorbers, and new types of optical filters and coatings--even molecular coatings built out of large proteins.
In addition, it has no filter wheel, optical filters to replace, nor optical couplings to align.

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