Diffracted light separation lens

By designing a circular lens with flat middle and concave surroundings, the diffracted light is separated and utilized, the problem of diffracted light reducing imaging quality is solved and the imaging quality is improved.

CN119882106APending Publication Date: 2025-04-25殷翔
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Patent Information

Application Number
CN202411917942.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-24
Publication Date
2025-04-25

AI Technical Summary

Technical Problem

Diffractive light will reduce the imaging quality, and it is difficult for the prior art to effectively separate diffractive light.

Method used

A circular lens with a flat middle and a concave surrounding the edge is designed, which can separate the parallel beams containing diffracted light. The beams in the middle area propagate in a straight line, and the beams in the surrounding area diverge and diffuse in different directions. They are reused by the linearly propagated beams.

Benefits of technology

Through this design, diffracted light can be separated to a certain extent, imaging quality can be improved, and the propagated light beam can be effectively utilized.

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Abstract

The invention relates to a diffracted light separation lens, a lens of the circular lens is in a form that the middle is flat and the periphery is concave, when parallel light beams containing diffracted light pass through the lens, the light beams in the middle area are propagated along a straight line, the light beams in the periphery area are diverged and diffused towards different directions, and the light beams propagated linearly are reused.
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Description

Technical Field

[0001] The invention belongs to the field of optics. Background Art

[0002] Diffraction light will reduce the imaging quality, and the present invention can separate the diffraction light to a certain extent. Summary of the invention

[0003] The circular lens is flat in the middle and concave at the periphery. When a parallel light beam containing diffracted light passes through it, the light beam in the middle area propagates in a straight line, while the light beam in the peripheral area diverges and spreads in different directions. The light beam propagating in a straight line is reused. BRIEF DESCRIPTION OF THE DRAWINGS

[0004] Figure 1 It is a schematic diagram of the side structure and light path of the present invention.

Claims

1. Diffraction light separation lens, characterized by The circular lens is flat in the middle and concave at the periphery. When a parallel light beam containing diffracted light passes through it, the light beam in the middle area propagates in a straight line, while the light beam in the peripheral area diverges and spreads in different directions. The light beam propagating in a straight line is reused.