Projection lens and projector

A projection lens and lens technology, applied in the optical field, can solve the problems of large size of the projection lens and inability to adapt to small-sized projection chips, etc., and achieve the effect of small size

Pending Publication Date: 2022-03-04
IVIEW DISPLAY SHENZHEN CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, existing projection lenses are usually bu

Method used

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  • Projection lens and projector
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Examples

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Embodiment Construction

[0023] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0024] In order to facilitate the understanding of the present application, the present application will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the technical field of this application. The terms used in the description of the present application are only for the purpose of ...

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Abstract

The embodiment of the invention relates to the technical field of optics, in particular to a projection lens and a projector. The embodiment of the invention provides a projection lens and a projector. The projection lens comprises a first lens, a second lens, a third lens, a triplet lens, a fourth lens, a prism and a DMD chip which are sequentially arranged along an optical axis from an image side to an object side, wherein the first lens has negative focal power, the second lens has negative focal power, the third lens has positive focal power, the triplet lens has positive focal power, the fourth lens has positive focal power, and the projection lens is small in size and can adapt to a small-size projection chip.

Description

technical field [0001] Embodiments of the present invention relate to the field of optical technologies, and in particular to a projection lens and a projector. Background technique [0002] With the advancement of technology, more and more people use projectors for presentations, video conferences or watching programs. In order to make the projectors more portable and usable, it is necessary to reduce the size and weight of the projectors. [0003] However, the existing projection lens is usually bulky and cannot be adapted to a small-sized projection chip. Contents of the invention [0004] Embodiments of the present invention mainly provide a projection lens and a projector, which are small in size and can be adapted to a small-sized projection chip. [0005] In the first aspect, a technical solution adopted by the embodiment of the present invention is to provide a projection lens, including: a first lens, a second lens, a third lens, and a triplet lens arranged in se...

Claims

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Application Information

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IPC IPC(8): G03B21/00G03B21/14G02B13/18
CPCG03B21/008G03B21/142G02B13/004G02B13/006G02B13/16G02B13/18G03B21/28G02B9/34
Inventor 梁久伟朱炜湛丁明内杨伟樑高志强
Owner IVIEW DISPLAY SHENZHEN CO LTD
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