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projection equipment

A technology of projection equipment and casing, which is applied in the field of projection, and can solve problems such as temperature drift, affecting imaging images, and changing the refractive index of lenses

Active Publication Date: 2020-08-04
QINGDAO HISENSE LASER DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, when the projection equipment is working, a certain amount of heat will be generated when the light passes through the lens. When the heat accumulates on the lens, it is easy to deform the lens, and then change the refractive index of each part of the lens, resulting in "temperature drift" phenomenon , affecting the final image

Method used

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Embodiment Construction

[0015] 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.

[0016] figure 1 It is a schematic structural diagram of the projection device provided by Embodiment 1 of the present invention. figure 2 It is an exploded schematic diagram of the projection device provided by Embodiment 1 of the present invention. image 3 It is a schematic structural diagram of the heat dissipation component in the projectio...

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Abstract

The invention provides a projection device. The projection device of the present invention comprises a lens assembly, a housing and a heat dissipation assembly, the housing is disposed outside the lens assembly, the lens assembly comprises a lens barrel, the heat dissipation assembly is located between the lens barrel and the housing and connected to the lens barrel, the heat dissipation assemblyis partially housed in the housing, and when the heat dissipation assembly moves axially with the lens barrel, there is an avoidance gap between the housing and the heat dissipation assembly. The projection device can effectively dissipate heat when the projection device is in operation.

Description

technical field [0001] The present invention relates to the technical field of projection, in particular to a projection device. Background technique [0002] With the development of science and technology and the improvement of people's living standards, various projection equipment such as laser TVs and projectors have been more and more widely used because of their advantages of larger projected image size and better display effect. [0003] At present, projection equipment mainly includes components such as optical components and lenses. Among them, the optical component is also called the optical engine, which usually includes components such as vibrating mirrors, which are mainly used to emit light; and the lens usually includes multiple sets of lenses, which can refract the light through the combination of lenses inside the lens, thereby performing imaging. The lens of the lens is installed in a lens barrel made of plastic and other materials, and one end of the len...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B21/16
CPCG03B21/16
Inventor 董淑斌
Owner QINGDAO HISENSE LASER DISPLAY CO LTD