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Projection lens and projection equipment

A technology of projection lens and projection equipment, applied in the field of projection display, can solve problems such as inconvenience, reduce aberration, avoid repeated lens replacement, and improve convenience

Pending Publication Date: 2021-01-22
GOERTEK OPTICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on this, in view of the problem that the existing projection equipment needs to change the lens repeatedly in the process of switching between high and low resolutions, which is inconvenient to use, it is necessary to provide a projection lens and projection equipment, aiming at avoiding repeated lens replacement and improving the usability. convenience

Method used

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  • Projection lens and projection equipment
  • Projection lens and projection equipment
  • Projection lens and projection equipment

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Embodiment Construction

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0031] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relationship between the components in a certain posture (as shown in the accompanying drawings). Relative positional relationship, movement conditions, etc., if the specific posture changes, the directional indication will also change accordingly.

[0032] In addition, in t...

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PUM

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Abstract

The invention discloses a projection lens and projection equipment, the projection lens is provided with a light incoming end for receiving projection light and a light outgoing end for emitting the projection light, the projection lens comprises a first lens, a second lens, a third lens and a cemented lens, and the first lens is arranged at the light outgoing end; a galvanometer is arranged at the light incoming end, the second lens and the third lens are sequentially arranged in a light path from the galvanometer to the first lens, the first lens is a negative lens, and the second lens and the third lens are positive lenses; and the cemented lens is arranged in a light path between the second lens and the third lens. According to the technical scheme, repeated replacement of the lens canbe avoided, and use is more flexible and convenient.

Description

technical field [0001] The invention relates to the technical field of projection display, in particular to a projection lens and projection equipment. Background technique [0002] In the projection display of DLP (Digital Light Processing, digital light processing), in order to improve the display resolution, a vibrating mirror is usually installed in the optical path. resolution. However, in some scenarios, low-resolution images are sufficient to meet the requirements of use. At this time, the galvanometer stops high-frequency vibration. In order to meet the low-resolution display, the lens needs to be replaced. In this way, in the process of switching between high and low resolution, the lens needs to be replaced repeatedly, which is not convenient to use. [0003] The above content is only used to assist in understanding the technical solution of the present application, and does not mean that the above content is admitted as prior art. Contents of the invention ...

Claims

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Application Information

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IPC IPC(8): G02B13/00G02B13/18G03B21/14
CPCG02B13/00G02B13/18G03B21/14
Inventor 何世峰
Owner GOERTEK OPTICAL TECH CO LTD
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