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meniscus Dictionary Terms

concavo-convex lens
A lens with one concave surface and one convex surface; synonymous with meniscus.
negative meniscus lens
A negative powered lens with one surface convex and the other concave, the latter having the greater curvature. It also is...
Mangin mirror
A double-surfaced catadioptric spherical mirror whose spherical first surface consists of a negative meniscus (concave) lens...
Gauss lens
A telescope objective with excellent spherochromatic correction, consisting of a meniscus crown and a meniscus flint, both...
Maksutov corrector
A thick meniscus lens arranged concentric with the center of curvature of a spherical mirror to produce an image free of...
divergent-meniscus lens
A lens with one surface convex and the other concave, the latter having the greater curvature. It also is known as a...
first-side meniscus
The process of grinding the concave surface of a single-vision spherical lens.
supplementary lens
A meniscus that is often fitted before a camera lens to permit focusing on near objects.
second-side meniscus
The process of grinding the convex surface of a convexo-concave meniscus.
rapid rectilinear lens
A double meniscus system in which two achromatized meniscus lenses are arranged symmetrically on either side of the aperture...
Sonnar lens
A photographic objective that uses the thick meniscus principle to obtain its power. It is designed to photograph small...
converging meniscus
A converging lens with one convex and one concave surface.
periscopic lens
Two simple meniscus lenses arranged symmetrically on either side of the aperture stop, providing reduced coma, lateral color...
meniscus anastigmat
An anastigmatic lens with a thick meniscus construction that flattens the field and corrects chromatic and spherical...
double-meniscus lens
See periscopic lens; rapid rectilinear lens.
meniscus lens
A lens that has one convex surface and the other concave.

(16 results found)

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