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Optical Surfaces Dictionary Terms

decentration aberration
An aberration occurring in a lens system when one or more of the centers of curvature of the optical surfaces do not coincide with the system's axis.
scattered light filter
A specific type of filter designed to reduce the amount of light scattered by reflections from the edges of optical...
patina
A thin film or coating that forms on various finished surfaces. On optical surfaces it usually denotes aging.
scatterometer
An instrument used to determine the absolute or relative scatter levels of optical surfaces.
diamond turning
Diamond turning, also known as diamond machining or diamond cutting, is a precision machining process used to produce...
etaloning
Etaloning is an optical phenomenon that occurs in imaging systems, particularly in devices such as spectrometers,...
interferometer
An instrument that employs the interference of lightwaves to measure the accuracy of optical surfaces; it can measure a...
diamond-turned optic
Diamond turning refers to a precision machining process used to produce complex optical components, particularly lenses and...
antireflection coating
An antireflection coating (AR coating) is a thin film or coating applied to optical surfaces, such as lenses or windows, to...
rugate
Bearing alternate ridges and grooves; corrugated. Said of some optical surfaces.
aplanatic surface
An aplanatic surface is an optical surface that is specifically designed or shaped to minimize spherical aberration and...
grinding tool
A tool of cast iron or another suitable medium used with a slurry of silicon carbide, aluminum oxide or emery for grinding...
optical flat
A piece of glass, pyrex or quartz having one or both surfaces carefully ground and polished plano, generally flat to less...
freeform optics
Freeform optics refers to the design and fabrication of optical surfaces that do not follow traditional symmetric shapes,...
centration
In a perfectly centered lens, the mechanical axis (defined by the ground outside the diameter of the lens) is made to be...
microdensitometer
The fundamental tool of microdensitometry, the microdensitometer is an instrument used for the precise measurement of...
optical axis
The imaginary line passing through both the centers of curvatures of the optical surfaces of a lens or mirror; the optical...
magnetorheological finishing
Magnetorheological finishing (MRF) is a precision optics polishing technique used for shaping and finishing optical surfaces...
lenticular
An array or mosaic of optical surfaces. May be a number of lenses closely packed to form multiple images or many parallel...
optical manufacturing tools and machinery
Optical manufacturing tools and machinery encompass a wide range of equipment, instruments, and systems used in the...
lenticular screen
A rear or front projection screen composed of minute optical surfaces that introduce a spread to the light beam that...
optical cement
A permanent, transparent, and highly transmissive adhesive capable of withstanding extreme temperatures that is applied to...
optical coatings
Optical coatings are thin layers of materials applied to optical components, such as lenses, mirrors, filters, and prisms,...
optical cements and adhesive
Optical cements and adhesives are specialized materials used in the assembly and bonding of optical components in optical...
optical blacking
A light absorbing material applied to ground optical surfaces during the process of making that surface non reflective. Such...
Fizeau fringes
Fizeau fringes are interference fringes observed in an interferometer, specifically in a Fizeau interferometer. The Fizeau...
lateral shearing interferometer
A lateral shearing interferometer is an optical device used in interferometry to measure phase differences between two beams...

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