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Fresnel lens

A technology of Fresnel lens and tooth pitch, which is applied in the field of Fresnel lens and can solve problems such as poor appearance

Pending Publication Date: 2022-08-05
宁波舜宇奥来技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The main purpose of the present invention is to provide a kind of Fresnel lens, to solve the problem that the Fresnel lens in the prior art has poor appearance

Method used

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Embodiment Construction

[0054] It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other in the case of no conflict. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0055] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0056] In the present invention, unless otherwise stated, the directional words used such as "upper, lower, top, bottom" are usually for the directions shown in the drawings, or for the components themselves in vertical, In terms of vertical or gravitational direction; similarly, for the convenience of understanding and description, "inner and outer" refers to the inner and outer relative to the contour of each component itself, but the...

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Abstract

The invention provides a Fresnel lens. The Fresnel lens includes: a main body portion; the tooth structures are annular or strip-shaped, when the tooth structures are annular, the annular tooth structures are concentrically arranged on the surface of one side of the main body part, and when the tooth structures are strip-shaped, the strip-shaped tooth structures are sequentially arranged on the surface of one side of the main body part in the first direction; each strip-shaped tooth structure extends in the second direction, and the first direction is perpendicular to the second direction. The tooth height or the tooth pitch of at least part of the tooth structures changes irregularly in the arrangement direction. The Fresnel lens solves the problem that a Fresnel lens in the prior art is poor in appearance.

Description

technical field [0001] The present invention relates to the technical field of optical imaging devices, in particular, to a Fresnel lens. Background technique [0002] At present, convex lenses or Fresnel lenses are often used in the industry to shape the point light source, so that the outgoing light is parallel light, so as to achieve the collimation or convergence effect of the light, which facilitates the design of the subsequent optical devices. It is beneficial to reduce the design difficulty of the optical system. [0003] Because the Fresnel lens has the characteristics of smaller thickness and lighter weight, and can also eliminate some spherical aberration, it is favored by designers. The Fresnel lens mainly includes circular Fresnel lens, strip Fresnel lens, Linear Fresnel lens, Fresnel reflection lens and other forms. It is classified from the surface arrangement of the tooth structure on the Fresnel lens, mainly the structure of equal tooth pitch and the struc...

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Application Information

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IPC IPC(8): G02B3/08
CPCG02B3/08
Inventor 贾敏明玉生王聪程治明汪杰陈远
Owner 宁波舜宇奥来技术有限公司
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