meniscus lens


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me·nis·cus lens

a lens having a spheric concave curve on one side and a spheric convex curve on the other.

me·nis·cus lens

(mĕ-nis'kŭs lenz)
A lens having a spheric concave curve on one side and a spheric convex curve on the other.
Synonym(s): meniscus (1) .

me·nis·cus

, pl. menisci (mĕ-niskŭs, -kī) [TA]
1. [TA] Any crescent-shaped structure.
2. A crescent-shaped fibrocartilaginous structure of the knee, the acromio- and sternoclavicular and the temporomandibular joints.
3. The crescentic curvature of the surface of a liquid standing in a narrow vessel.
Synonym(s): meniscus lens.
[G. mēniskos, crescent]
References in periodicals archive ?
This part contains the secondary mirror, meniscus lens, and focuser.
The first generation of Maksutov-Cassegrains, popularized by John Gregory in the late 1950s employed only three spherical surfaces: the primary mirror, and the front and rear surfaces of the meniscus lens.