Optical Lenses for Photography

An optical lens and lens technology, applied in optics, optical components, instruments, etc., can solve the problems of increased system sensitivity, limited aberration correction capability, and difficulty in miniaturizing the total length of the lens, achieving good imaging quality and reducing sensitivity. degree, the effect of shortening the overall length of the lens
CN102298199AActive Publication Date: 2011-12-28LARGAN PRECISION
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
LARGAN PRECISION
Publication Date
2011-12-28

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Abstract

The invention discloses an optical lens for photographing, which sequentially comprises a first lens, a second lens and a third lens from an objective side to an image side, wherein the first lens has a positive flexion force, and the surface of the objective side of the first lens is a convex surface; the second lens has a positive flexion force, and the surface of the image side of the second lens is a convex surface, the third lens has a positive flexion force, the surface of the objective side of the third lens is a convex surface and the surface of the image side of the third lens is a concave surface, and both the surface of the objective side and the surface of the image side of the third lens are non-spherical surfaces; and at least surface of the surface of the objective side andthe surface of the image side of the third lens is provided with at least one inflexion point; the optical lens for photographing is additionally provided with a diaphragm which is arranged between aphotographed object and the second lens; and in the optical lens for photographing, the three lenses with the flexion force are comprised. By adoption of the lens group allocation mode, the lens volume can be effectively reduced, the sensitivity of the optical system is reduced, and higher image resolution can be obtained.
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Description

technical field

[0001] The invention relates to an optical lens for photography, in particular to a miniaturized optical lens for photography used in electronic products. Background technique

[0002] In recent years, with the rise of imaging modules, the demand for miniaturized photographic lenses has been increasing, and the photosensitive elements of general photographic lenses are nothing more than charge coupled devices (CCD) or complementary metal oxide semiconductor elements. (Complementary Metal-Oxide Semiconductor Sensor, CMOS Sensor) two types, and with the advancement of process technology, the pixel size of the photosensitive element is reduced. In addition, today's electronic products are developing with good functions and thin, light and small appearance. Therefore, Miniaturized photographic lenses with good imaging quality have become the mainstream in the current market.

[0003] Existing miniaturized photographic lenses, in order to reduce manufacturing cos...

Claims

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