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4 terms
Photonics Dictionary: R
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Spherical x
R x
Rayleigh limit
The restriction of wavefront error to within a quarter of a wavelength of a true spherical surface to assure essentially perfect image quality.
rectilinear system
An optical system that is corrected for distortion and spherical aberration and therefore forms the image of a straight line as a straight line.
Ritchey-Chretien telescope
A form of Cassegrain telescope having a concave hyperbolic primary and a convex hyperbolic secondary. This form permits the simultaneous correction of spherical aberration and coma.
robotic arms
Robotic arms, also known as robot arms or manipulator arms, are mechanical devices designed to mimic and perform the functions of human arms. They consist of multiple articulated segments, joints,...
Photonics Dictionary
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