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meniscus Dictionary Terms

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

(16 results found)

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