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radial Dictionary Terms

wide-angle distortion
A common aberration in lenses covering large fields of view; it results in images of objects near the edge of the field being compressed in the radial distortion.
centrifuge
A rotating chamber that can be spun at different speeds to generate great radial forces used to simulate different gravity...
constant linear velocity
Method of disk rotation used for optical disk drives, in which the spindle motor decreases the speed of the disk's rotation...
radially variable reflectivity optic
A reflecting optic whose reflectivity is a function of the radial distance from the optic axis; can be used to convert a...
distortion
A general term referring to the situation in which an image is not a true-to-scale reproduction of an object. The term also...
axial vapor-phase deposition
A vapor-phase oxidation process for fabricating graded-index optical fibers. It differs from outside vapor phase deposition...
artificial pupil
iris or adjustable radially symmetric opening used for allowing the passage of useful light
radial distribution method
A statistical analysis of facts obtained when the intensity of x-ray diffraction is calculated at different angles. In this...
GRIN lens
A GRIN (gradient index) lens is a type of optical lens that utilizes a gradient in refractive index across its volume rather...
azimuthal polarization
Azimuthal polarization refers to a specific polarization state of light where the electric field vector of the...
Gaussian profile
An intensity distribution (intensity as a function of radial distance from the beam center) which is given by the Gaussian...
radial astigmatism
The astigmatism in a lens system that results when light enters the system at an oblique angle.
gradient-index profile
The term gradient-index profile refers to a specific type of refractive index distribution within an optical material. In...
radial distortion
An alteration in magnification from the center of the field to any point in the field, measured in a radial direction from...
radial gradient
In gradient index optics, a gradient profile in which the index varies in a direction perpendicular to the optical axis....
tangential distortion
Optical aberration such that image magnification varies with ray distance from the optical axis in a radial distortion.
radial velocity
The velocity from object to observer, directed along the line of sight.
radial runoff
The deviation from the ideal case where a circular variable filter is located at a given wavelength along a radial line (or...
axial gradient technology
A method of designing lasers whereby the laser rod is cut into elliptical discs and cooled by running water over the disc...
radial grating
A grating in which the wires or rods are set radially within a circular structure.
graded index
Descriptive of an optical fiber having a core refractive index that decreases almost parabolically and radially outward...
wood lens
A type of radial gradient lens that can focus light even though its surfaces are flat.
double-focusing mass spectrometer
A mass spectrometer utilizing both radial electrostatic and magnetic field analyzers to improve the focusing and increase...
curvilinear distortion
A lens aberration in which the focal length varies radially outward from the center of the field. It has the effect of...
pyramid error
Pyramid error in optics refers to an aberration in the shape of an optical surface, particularly in the context of mirrors....

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