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Light modulator and projection display system

A light modulator and projection display technology, applied in the field of projection, can solve the problems of non-wavelength selectivity of visible light, short life of LCD display chips, and poor display effect, so as to avoid loss of light efficiency, increase maximum output brightness, and structure simple effect

Pending Publication Date: 2022-06-21
APPOTRONICS CORP LTD
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Problems solved by technology

The SLM commonly used in modern projection display systems has no wavelength selectivity for visible light, which includes reflective digital micromirror devices (Digital Micromirror Device, DMD) based on micro-electro-mechanical systems (Micro-Electro-Mechanical System, MEMS) technology, reflective Liquid Crystal on Silicon (LCoS) and transmissive liquid crystal displays (LCD, Liquid Crystal Display) are commonly used for display at present, but there are problems of large size, poor display effect, short life of LCD display chips and light Large efficiency loss and other issues

Method used

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  • Light modulator and projection display system
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  • Light modulator and projection display system

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Embodiment Construction

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0034] In the display system, the core principle of display is to use red, green, and blue three primary colors for display, that is, it is necessary to display the image display information of red, green and blue three primary colors through SLM, and then integrate the three primary colors through time integration or space integration. The combination of primary color image information enables the human eye to observe full-color image in...

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Abstract

The invention discloses a light modulator and a projection display system, the light modulator comprises a surface angle conversion assembly and a modulation assembly, the surface angle conversion assembly is used for carrying out surface angle conversion convergence on multiple light source light beams to form multiple convergent light beams corresponding to the light source light beams, and the multiple convergent light beams are separated in an angular space; the modulation assembly is used for modulating the plurality of convergent light beams to form image light; the modulation assembly comprises a plurality of pixel units, each pixel unit comprises at least three sub-pixels, each convergent light beam is incident to the sub-pixels in the pixel unit, and each convergent light beam is in one-to-one correspondence with the sub-pixels; the surface angle conversion assembly comprises a micro lens array composed of a plurality of micro lenses, and each micro lens is matched with the position of at least one pixel unit so as to converge the convergent light beam on the pixel unit. In this way, the light efficiency can be improved, the structure is simple, and the size is small.

Description

technical field [0001] The present application relates to the field of projection technology, and in particular, to a light modulator and a projection display system. Background technique [0002] The projection display system mainly includes the light source, lighting system, optomechanical system and projection lens. Spatial Light Modulator (SLM) is an important device in the optomechanical system, which can be realized by regulating the luminous flux of independent pixels. Pixelated image display. SLMs commonly used in modern projection display systems do not have wavelength selectivity for visible light, and include reflective digital micromirror devices (DMDs), reflective digital Liquid Crystal on Silicon (LCoS) and transmissive liquid crystal displays (LCD, Liquid Crystal Display) are commonly used for display at present, but there are large size, poor display effect, short life of LCD display chips and light. The problem of large efficiency loss and so on. SUMMARY...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/14G03B21/00G03B21/20
CPCG03B21/14G03B21/006G03B21/2066G03B21/208G03B21/204G03B21/2033G03B21/00G03B21/20
Inventor 胡飞张翠萍李屹
Owner APPOTRONICS CORP LTD
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