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Projection appartaus

A technology for projection equipment and mirror brackets, applied in optics, instruments, projection devices, etc., can solve problems such as large vibration amplitude of vibration mirrors and limited vibration suppression effect, so as to avoid swing and elastic deformation, reduce resonance and noise, and strengthen structural rigidity Effect

Inactive Publication Date: 2019-01-25
QINGDAO HISENSE LASER DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] However, since the vibration frequency of the galvanometer is fast and the overall weight of the galvanometer is light, the amplitude of the galvanometer is usually large, and the damping material has a limited effect on vibration suppression.

Method used

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Examples

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Embodiment Construction

[0018] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. 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.

[0019] figure 2 It is a schematic structural diagram of the projection device provided by Embodiment 1 of the present invention. image 3 yes figure 2 An exploded schematic of the projection device in . Figure 4 It is a schematic structural diagram of the galvanometer assembly in the projection device provided by Embodiment 1 of the present ...

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Abstract

A projection apparatus is provided. The apparatus comprises, an optical assembly A len assembly and a galvanometer assembly, The vibrating mirror assembly includes a vibrating mirror bracket and a vibrating mirror disposed on the vibrating mirror bracket, the vibrating mirror bracket having a first side and a second side, the first side and the second side being oppositely disposed along an axialdirection of the vibrating mirror assembly, and the first side and the optical unit are fixedly connected, and the second side and the lens assembly are fixedly connected. The invention can reduce theresonance and noise caused by the vibration of the vibrating mirror.

Description

technical field [0001] The present invention relates to the field of projection equipment, in particular to a projection equipment. Background technique [0002] With the continuous development of science and technology, projection devices have been more and more widely used due to their advantages of large screen size and good visual effects. [0003] At present, in order to improve the picture resolution of the projection device, a vibrating mirror is provided in the projection device. The vibrating mirror is a projective component. The vibrating mirror is placed between the optical-mechanical assembly and the lens of the projection device. The light beam reflected by the optical-mechanical assembly will first pass through the vibrating mirror and then enter the lens. Due to the vibration of the galvanometer, the overall displacement of the light beam will be generated, and superimposed pictures will be produced, thereby improving the clarity of the picture. figure 1 It ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/28G02B26/08
CPCG02B26/0816G03B21/28
Inventor 黄永达李建军石龙飞
Owner QINGDAO HISENSE LASER DISPLAY CO LTD
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