the optical system of a microscope is the objectives
"Optical" means related to light, often to visible light. So, a system that works with light.
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EOS is Electro-Optical System. It controls the optics of a lens through electronic system.
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There are several components of an electro-optical system. These include an EOS detector, position detectors, color detectors, and quadrants.
An optical axis is a line along which there is some degree of rotational symmetry in an optical system such as a camera lens or microscope..
Marginal rays are the light that passes through an optical system that is away from the optical axis.
An optical system consists of a succession of elements, which may include lenses, mirrors, light sources, detectors, projection screens, reflecting prisms, dispersing devices, filters and thin films, and fibre-optics bundles.
Optical memory is an early form of computer memory. It involves the use of an optical system for the writing and reading of data to and from a computer's main memory.
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