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A miniature projection lens

A micro-projection and lens technology, applied in the optical field, can solve the problems of low resolution, high weight, large lens size, etc.

Active Publication Date: 2021-01-08
SHENZHEN EVIEWTEK TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] A miniature projection lens provided by the present invention solves the problem that the resolution of the existing projection lens cannot reach the high resolution required in the market, and the existing design has the problem that the size of the lens is too large and the weight is heavy, so it is not very suitable for micro projection lens

Method used

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Embodiment Construction

[0030] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the following The described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0031] figure 1 It is a structural diagram of an embodiment of a micro projection lens of the present invention, as figure 1 As shown, the miniature projection lens provided by the embodiment of the present invention, the lens sequentially includes from the enlarged end to the reduced end:

[0032] First aspherical plastic lens P1, firs...

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Abstract

The invention discloses a miniature projection lens. The miniature projection lens of the invention has the advantages of compact structure, good imaging effect, high resolution, large aperture, longback focus and depth of field, loose tolerance and high yield during production. According to the miniature projection lens of the invention, a second aspherical glass lens has glass aspherical surfaces. Compared with a lens having plastic aspherical surfaces in the prior art, the second aspherical glass lens can effectively solve the focus shift problem of the miniature projection lens due to heat. In similar lens design, the miniature projection lens of the invention is provided with fewer lenses and is smaller in size.

Description

technical field [0001] The invention relates to the field of optics, in particular to a miniature projection lens. Background technique [0002] As projection equipment plays more and more roles in life, it will be applied to more and more fields. More equipment needs to be embedded in micro-projection equipment, which requires higher and higher requirements for projection light machines. Smaller size, more compact structure, better imaging effect, and higher resolution are currently the requirements for micro-projectors on the market. , due to the market's demand for high-resolution and high-imaging quality projectors, 4K-resolution projectors emerged as the times require. The resolution of existing projection lenses cannot meet the high-resolution requirements on the market, and the existing design The size of the lens is too large and the weight is heavy, so it is not very suitable for micro-projection lenses. Compared with the optical system designed in the past, the nu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G02B3/02G02B1/00G03B21/14
CPCG02B1/00G02B3/02G02B13/0045G02B13/006G03B21/14
Inventor 贺银波金建培陆巍
Owner SHENZHEN EVIEWTEK TECH CO LTD
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