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Lens assembly

A technology of lens components and projection lenses, which is applied in the field of projectors and can solve problems such as changes in the reflection angle of curved mirrors, affecting the quality of projection display, and local blurring

Active Publication Date: 2015-12-16
HISENSE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the process of processing and assembly, the reflection angle of the curved mirror may change, and then there will be problems such as offset of the projected image, partial blurring, or uneven focus of the image, which will affect the quality of the projection display.

Method used

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Embodiment Construction

[0041] 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 some, not all, embodiments of the present invention. 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.

[0042] An embodiment of the present invention provides a lens assembly, such as Figure 1 to Figure 9 As shown, it includes a first base 11 and a second base 12, the first base 11 is provided with a curved mirror 13, the curved mirror 13 includes a reflective surface and a non-reflective surface, the second base 12 is provided with a projection lens 14, and the projection The lens 14 can project light on the reflective surface of the curved reflector 13, and o...

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Abstract

The embodiment of the invention provides a lens assembly, which relates to the technical field of projectors and can flexibly adjust the reflection angle of an aspherical mirror. The lens assembly comprises a first base and a second base; the first base is provided with an aspherical mirror; the aspherical mirror comprises a reflection surface and a non-reflection surface; the second base is provided with a projection lens; one side of the non-reflection surface of the aspherical mirror is provided with a front cover plate; the front cover plate is fixed on the first base; and the aspherical mirror comprises a first adjusting end and a second adjusting end opposite to the first adjusting end. The lens assembly also comprises a first adjusting piece; the front cover plate is provided with a first through hole; the first adjusting piece passes through the first through hole; the first adjusting piece can drive the first adjusting end of the aspherical mirror to move in directions close to or far away from the projection lens; the first base is fixed with a limiting structure; and the limiting structure can restrain the movement distance of the second adjusting end of the aspherical mirror in directions close to or far away from the projection lens. The lens assembly is used for a projector.

Description

technical field [0001] The invention relates to the technical field of projectors, in particular to a lens assembly. Background technique [0002] With the continuous advancement of science and technology, projection display technology has developed rapidly in recent years. Among them, short-focus projection has become the focus of recent research due to the advantages of small projection distance and large projection screen. [0003] Currently, one way to realize short-focus projection is reflective short-focus projection. That is, the image is projected on the curved mirror through the projection lens, and reflected to the projection screen through the curved mirror. In the prior art, in order to prevent dust or external force from adversely affecting the reflection of the curved reflector, the curved reflector is generally sealed and fixed together with the projection lens. However, in the process of processing and assembly, the reflection angle of the curved mirror ma...

Claims

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Application Information

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IPC IPC(8): G03B21/14G03B21/28G02B7/182G02B7/198
Inventor 李兵
Owner HISENSE
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