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Projection optical device

A projection optical device and projection lens technology, applied in optics, projection devices, instruments, etc., can solve the problems of cost increase, scrapping, DMD scrapping, etc., and achieve the effects of increasing service life, reducing costs, and simple structure

Pending Publication Date: 2021-03-26
GIS TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0002] DMD has the following characteristics: under the ultraviolet radiation for a long time, the wafer in the irradiated area may not be able to flip or the reflectivity will be reduced, and it will eventually be scrapped
Take the DMD model of 1080P as an example: figure 1 As shown, the number of 1080P DMD chips currently in use is 1920×1080, and the actual device uses only 1920×336 in the middle area, which means that once some of the chips in the middle area are damaged and cannot be used, the entire DMD will be scrapped, resulting in The cost has increased significantly

Method used

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  • Projection optical device
  • Projection optical device
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Embodiment Construction

[0021] The following will clearly and completely describe the technical solutions in specific embodiments of the present invention. Obviously, the described embodiments are only some 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 making creative efforts belong to the protection scope of the present invention.

[0022] Such as Figure 3~5 Shown, a kind of projection optics device comprises collimating lens 1, projection lens 2, installation base plate 3 and DMD4; The end of described projection lens 2 is provided with the conversion plate 5 that matches with installation base plate 3; Described DMD4 sets On the installation bottom plate 3; specifically, the installation bottom plate 3 is provided with a card slot for installing the DMD4, and the DMD4 is arranged on the installation bottom plate 3 through the card slot.

[0023] The de...

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Abstract

The invention discloses a projection optical device which comprises a collimating lens, a projection lens, a mounting bottom plate and a DMD. The collimating lens is arranged on the projection lens; aconversion plate matched with the mounting bottom plate is arranged at the end part of the projection lens; the DMD is arranged on the mounting bottom plate; and the mounting bottom plate can be movably mounted on the conversion plate. According to the projection optical device provided by the invention, the DMD working area is reasonably distributed, and the service life of the DMD is prolonged.

Description

technical field [0001] The invention belongs to the technical field of projection optical devices, and in particular relates to a projection optical device. Background technique [0002] DMD has the following characteristics: under ultraviolet radiation for a long time, the wafer in the irradiated area may not be able to flip or the reflectivity will decrease, and it will eventually be scrapped. Take the DMD model 1080P as an example: figure 1 As shown, the number of 1080P DMD chips currently in use is 1920×1080, and the actual device uses only 1920×336 in the middle area, which means that once some of the chips in the middle area are damaged and cannot be used, the entire DMD will be scrapped, resulting in The cost increased substantially. Therefore, it is necessary to provide a projection optical device that can maximize the use of the DMD area. Contents of the invention [0003] In view of the above-mentioned deficiencies in the prior art, the purpose of the present ...

Claims

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Application Information

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IPC IPC(8): G03B21/00G03B21/14
CPCG03B21/008G03B21/142
Inventor 于向前陈国军吴景舟马迪
Owner GIS TECH INC
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