Lens and optical system

Abstract

The invention provides a lens and an optical system with the lens. The lens comprises a mounting surface, a light incoming surface, a first light outgoing surface, a second light outgoing surface and a reflecting surface, wherein the mounting surface is used for achieving mounting of the lens, a light source cavity is formed in the center of the mounting surface and used for holding a light source, the inner surface of the light source cavity is the light incoming surface, one end of the first light outgoing surface is connected with the mounting surface, the other end of the first light outgoing surface is connected with the second light outgoing surface, and the reflecting surface is used for reflecting light rays which are emitted from the light incoming surface to the reflecting surface to the first light outgoing surface or the second light outgoing surface to exit. According to the lens, the positions and structures of the mounting surface, the light incoming surface, the first light outgoing surface, the second light outgoing surface and the reflecting surface of the lens are reasonably arranged, and therefore large-angle projection of the light rays can be achieved, the energy of the projected light rays on the large-angle edge is sufficient, and the optical performance requirement of large-angle industrial application for a large field angle can be met.

Description

technical field [0001] The invention belongs to the field of optics, in particular to a lens and an optical system with the lens. Background technique [0002] Today's industry is getting more and more developed, and the requirements for optical systems are getting higher and higher. One type of optical system is a wide-angle optical system, which can emit light at a large angle. A dodging sheet is required in the wide-angle optical system to make the light evenly emitted. [0003] At present, the wide-angle dodging film generally adopts DOE (Diffractive Optical Elements, diffractive optical device) or ROE (Refractive Optical Elements, refractive optical device) as a design solution. The DOE scheme is based on the diffraction theory of light waves. It is designed by computer software and etched on the substrate to produce a stepped or continuous relief structure through the semiconductor chip manufacturing process. The phase modulation of the transmitted beam is carried ou...

AI Technical Summary

Problems solved by technology

[0004] Regardless of DOE or ROE, the energy of the light at a large angle is relatively weak, which does not meet the optical performance requirements of the optical system for a large field of view.

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