Large-aperture high-definition optical system and lens for its application

Abstract

The invention discloses a large aperture high definition optical system. From the surface to the image plane along the optical axis, the system is successively provided with a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens; the surface side of the first lens is convex, and the image surface is concave; the second lens is a biconcave lens; the third lens is a lenticular lens; the surface of the fourth lens is concave, and the image surface is convex; the surface of the fifth lens is concave, and the image surface is convex; the sixth lens is a lenticular lens; wherein the fourth lens and the fifth lens are combined lenses and satisfy TTL / EFL <= 5.5. In another aspect, the present invention also provides a lens. The large aperture high definition optical system is mainly composed of six lenses. The number of lenses is small, and the structure is simple; different lenses are combined with each other, and the fourth lens and the fifth lens are cemented lenses with large aperture, high pixel, low distortion and good heat dissipation and other optical properties.

Description

technical field [0001] The invention relates to an optical system and its applied lens, in particular to an optical system composed of six lenses and its applied vehicle lens. Background technique [0002] With the application and popularization of automobile auxiliary driving systems, vehicle lenses have also been widely used. Since the vehicle-mounted lens is required to be able to adapt to changing and complex climate environments and lighting conditions, the lens needs a larger aperture; at the same time, the vehicle-mounted lens is also required to be able to recognize road tracks and traffic signs, so the lens needs to have a higher definition. In order to meet the above requirements, the existing vehicle lenses generally have the defects of too many lenses and complex structures. Contents of the invention [0003] In order to overcome the problems of too many lenses and complicated structures in existing optical systems or lenses, the embodiments of the present inv...

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Problems solved by technology

[0003] In order to overcome the problems of too many lenses and complex structures in existing optical systems or lenses, the embodiments of the present invention provide a large-aperture high-definition optical system on the one hand

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