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Projection device

A technology of projection equipment and components, applied in the field of projection display, can solve the problems such as the inability to move the lens barrel and the inability to adjust the focus smoothly.

Active Publication Date: 2019-12-27
QINGDAO HISENSE LASER DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At this time, the heat transfer component that is fixedly connected to the lens barrel and the housing will make the lens barrel unable to move, resulting in the inability to focus smoothly

Method used

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Embodiment Construction

[0016] 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.

[0017] figure 1 is a schematic cross-sectional view of the projection device provided by Embodiment 1 of the present invention. figure 2 It is a schematic structural diagram of the projection device provided by Embodiment 1 of the present invention. image 3 It is an exploded schematic diagram of the projection device provided by Embodiment 1 o...

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Abstract

The invention provides a projection device. The projection device comprises a lens assembly, an optical assembly, a heat transfer assembly and a lens base, wherein the lens assembly comprises at leasttwo lens barrels, at least one lens barrel of the at least two lens barrels has the variable axial position, the optical assembly is provided with a heat dissipation structural member, the heat transfer assembly is connected between a side wall of the lens barrel and the heat dissipation structural member, the heat transfer assembly is partially located between the lens base and the heat dissipation structural member, and an axial distance between the heat transfer assembly and the lens base and an axial distance between the heat transfer assembly and the heat dissipation structural member are both variable distances. The projection device is advantaged in that smooth focusing of the lens can be ensured while heat dissipation is carried out on the lens.

Description

technical field [0001] The invention relates to the field of projection display, 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; the lens is usually fixed by the lens base, and includes multiple sets of lenses. Through the combination of lenses inside the lens, it can control Light rays are refracted to form an image. The lens of the lens is installed in the lens barrel, and one end of the lens barrel is con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/14G03B21/16G02B7/04
CPCG03B21/142G03B21/16G02B7/04
Inventor 董淑斌
Owner QINGDAO HISENSE LASER DISPLAY CO LTD
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