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Definition of Concave lens
1. Noun. A lens such that a parallel beam of light passing through it is caused to diverge or spread out.
Medical Definition of Concave lens
1. A diverging minus power lens. Synonym: minus lens. (05 Mar 2000)
Lexicographical Neighbors of Concave Lens
Literary usage of Concave lens
Below you will find example usage of this term as found in modern and/or classical literature:
1. A Text-book of Physics: Including a Collection of Examples and Questions by William Watson (1920)
"In the opposite case a concave lens is a converging lens, ... If a pencil of rays
parallel to the axis falls on a concave lens, such as CD (Fig. ..."
2. Elementary Treatise on Natural Philosophy by Augustin Privat-Deschanel (1893)
"Principal Focus of concave lens. increase of refractive power or by a ... In the
case of a concave lens, rays incident parallel to the principal axis ..."
3. The Nature of Light: With a General Account of Physical Optics by Eugene Lommel (1876)
"Every concave lens has, on every axis, two such focal points, which are situated
at an equal distance from the lens on either side, and have the same ..."
4. A Treatise on Light by Robert Alexander Houstoun (1915)
"Focal Length of a concave lens. If the object is real, the image produced by a
... In the first method the concave lens and auxiliary convex lens are placed ..."
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