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Corrector plate: A full aperture negative lens placed before a primary mirror designed to correct the optical aberrations of the mirror. Schmidt corrector plate: An aspheric-shaped corrector plate used in the Schmidt telescope. Meniscus corrector: A meniscus-shaped corrector plate usually used in the Maksutov telescope.
A q-plate is an optical device that can form a light beam with orbital angular momentum (OAM) from a beam with well-defined spin angular momentum (SAM). Q-plates are based on the SAM-OAM coupling that may occur in media that are both anisotropic and inhomogeneous , such as an inhomogeneous anisotropic birefringent waveplate .
Springfield Armory, Inc., is an American commercial firearms manufacturer and importer based in Geneseo, Illinois. Founded in 1974 by Bob Reese and family, the company produces rifles such as the M1A and imports handguns such as the XD series and Hellcat .
Wire reticles are the oldest type of reticles and are made out of metal wire or thread, mounted in an optically appropriate position in the telescopic sight's tube. Etched reticles are an optic element, often a glass plate, with inked patterns etched onto it, and are mounted as an integrated part of the lightpath. When backlit through the ...
A typical optical cage system mounts each optical element in a plate. Thin rods inserted through holes in the plates allow several plates to be mounted in series, with the optical elements aligned along a common axis. A variety of hardware supports more complex designs, including optical paths that turn corners and adjustable elements.
The crystal is cut into a plate, with the orientation of the cut chosen so that the optic axis of the crystal is parallel to the surfaces of the plate. This results in two axes in the plane of the cut: the ordinary axis , with index of refraction n o , and the extraordinary axis , with index of refraction n e .
Optical isolators are different from 1/4 wave plate based isolators [dubious – discuss] [clarification needed] because the Faraday rotator provides non-reciprocal rotation while maintaining linear polarization. That is, the polarization rotation due to the Faraday rotator is always in the same relative direction.
Binary zone plate: The areas of each ring, both light and dark, are equal. Sinusoidal zone plate: This type has a single focal point. A zone plate is a device used to focus light or other things exhibiting wave character. [1] Unlike lenses or curved mirrors, zone plates use diffraction instead of refraction or reflection.
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