Low-distortion wide-angle optical system

Abstract

An embodiment of the invention discloses a low-distortion wide-angle optical system which sequentially comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lensfrom an object surface to an image surface along an optical axis. An object surface side of the first lens is a convex surface, an image surface side of the first lens is a concave surface, and the first lens has positive power. An object surface side of the second lens is a convex surface, an image surface side of the second lens is a concave surface, and the second lens has negative power. An object surface side of the third lens is a convex surface, an image surface side of the third lens is a concave surface, and the third lens has positive power. An object surface side of the fourth lensis a convex surface, an image surface side of the fourth lens is a convex surface, and the fourth lens has positive power. An object surface side of the fifth lens is a concave surface, an image surface side of the fifth lens is a plane, and the fifth lens has negative power. An object surface side of the sixth lens is a convex surface, an image surface side of the sixth lens is a convex surface,and the sixth lens has negative power. The system mainly comprises six lenses, the number of the lenses is small, the system is simple in structure, integrally miniaturized and applicable to the field of aerial photo monitoring and the like, and has good optical properties such as wide angles, high pixels and low distortion by mutually combining different lenses.

Description

Technical field: [0001] The invention relates to an optical system, in particular to a low-distortion wide-angle optical system applied to the fields of aerial photography monitoring such as unmanned aerial vehicles, aerial cameras and the like. Background technique: [0002] The existing optical systems suitable for the field of aerial photography monitoring generally have the defects of a large number of lenses and a complex structure. Invention content: [0003] In order to overcome the problems of too many lenses and complex structure in the existing optical system, the embodiment of the present invention provides a low-distortion wide-angle optical system. [0004] The low-distortion wide-angle optical system is provided along the optical axis from the object plane to the image plane: a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens; [0005] The object side of the first lens is convex, the image side is concave, and its optical...

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Problems solved by technology

[0003] In order to overcome the problems of too many lenses and complex structure in the existing opt

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