Projection apparatus and electronic equipment

A technology of projection device and projection module, which is applied to projection devices, instruments, optics, etc., can solve problems such as inconvenience in using small spaces, and achieve the effect of increasing the display screen, being easy to use, and increasing the size.

Inactive Publication Date: 2017-08-04
LENOVO (BEIJING) LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the existing projection device, in order to realize large-scale screen display, it is necessary to make the distance between the projection module 21 and the screen 23 sufficiently large, which is not convenient for use in a small space

Method used

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  • Projection apparatus and electronic equipment
  • Projection apparatus and electronic equipment
  • Projection apparatus and electronic equipment

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Embodiment Construction

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part 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.

[0035] In the prior art, the lens 22 includes a plurality of optical lenses. When the distance between the projection module 21 and the screen 23 is not changed, the display screen can be fine-tuned by adjusting the focal length of the optical lens, that is, the display screen can be slightly increased or reduced to adjust the clarity of the display screen.

[0036] When the size of the display screen needs to be greatly changed, the size of the di...

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Abstract

The invention discloses a projection apparatus and electronic equipment. The projection apparatus comprises a projection module and a lens module; the lens module comprises an optical lens group and a reflector; and light source information emitted from the projection module incidents to the reflector through the optical lens group to be reflected by the reflector and then to be projected to a preset screen plane to form an image, wherein the reflector is used for reflecting the incident light source information to the preset screen plane. According to the technical scheme disclosed in the invention, the optical distance from the light source information emitted from the projection module to the preset screen plane can be increased though the reflection effect of the reflector, so as to further realize image display of relative large dimensions; and meanwhile, by setting the reflection position of the reflector, the optical distance increasing proportion can be set, so that the dimension of the displayed image can be greatly enlarged, and projection of the displayed image with large dimensions can be realized within a relatively small space.

Description

technical field [0001] The present invention relates to the technical field of multimedia devices, and more specifically, to a projection device and electronic equipment. Background technique [0002] A digital mirror device (DMD for short) is an important digital optical device currently used in a projector, which reflects light through tens of thousands of tiny controllable mirrors to form a picture. Currently, the DMD is a core component of a DLP (Digtal Light Processing, digital light processing) projection device. [0003] refer to figure 1 , figure 1 It is a schematic diagram of the working principle of a common projection device in the prior art. The projection module 21 projects the image on the screen 23 after passing through the lens 22 . In the existing projection device, in order to realize a large-size picture display, it is necessary to have a sufficiently large distance between the projection module 21 and the screen 23 , which is not convenient for use in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/28G02B13/00
CPCG02B13/00G03B21/28
Inventor 李建国
Owner LENOVO (BEIJING) LTD
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