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Projection device and system

A technology of projection device and projection system, applied in projection device, photography, optics, etc., can solve the problem of insufficient image contrast and achieve the effect of improving contrast

Inactive Publication Date: 2016-08-17
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to provide a projection device and a projection system; to solve the technical problem that the image contrast of the existing projection device and projection system is not high enough

Method used

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  • Projection device and system

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Embodiment Construction

[0038] The following descriptions of the various embodiments refer to the accompanying drawings to illustrate specific embodiments in which the present invention can be practiced. The directional terms mentioned in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", etc., are for reference only The orientation of the attached schema. Therefore, the directional terms used are used to illustrate and understand the present invention, but not to limit the present invention.

[0039] In the figures, structurally similar units are denoted by the same reference numerals.

[0040] The present invention provides a projection device, comprising:

[0041] a light source module;

[0042] A polarizing element, configured to output linearly polarized light in a predetermined polarization direction according to the light emitted by the light source module;

[0043] a modulation module, which is used to modulate the linearly polarize...

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Abstract

The invention provides a projection device and system. The projection device comprises a light source module, a polarized optical device, a modulation model and a projection lens, wherein the polarized optical device is used for outputting linearly polarized light of a preset polarization direction according to light emitted by the light source module; the modulation module is used for modulating the linearly polarized light into target images, and the polarized optical device is arranged between the modulation module and the light source module; the projection lens is used for projecting the target images onto a screen. The projection device and system have the advantage that the contrast ratio of the projection images is raised.

Description

technical field [0001] The invention relates to the display field, in particular to a projection device and a projection system. Background technique [0002] With the development of science and technology and economic level, in various teaching or lectures, the application of projectors has become very popular. [0003] A projector is a commonly used office appliance at present. The principle of its display is to project an image onto a screen through an optical machine. However, due to the interference of external ambient light, when black pixels are displayed on the screen, external light will irradiate these pixels and cannot completely display black. Therefore, a major defect of existing projection displays is that the contrast of projected images is low. Contents of the invention [0004] The object of the present invention is to provide a projection device and a projection system to solve the technical problem that the image contrast of the existing projection devi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/20G03B21/00
CPCG03B21/006G03B21/008G03B21/2033G03B21/208G02B27/149G02B27/283G03B21/2073G03B21/602G03B21/604G03B33/12G03B21/2013
Inventor 徐向阳
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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