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Efficient miniature projection optical engine

一种微型投影、光学引擎的技术，应用在投影显示领域，能够解决无法满足微型化、轻量化、光学元件多、结构复杂等问题，达到结构简单、光学元件少、光能利用率高的效果

Inactive Publication Date: 2011-01-12
BUTTERFLY TECH SHENZHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The projector with this structure requires each light-emitting diode assembly to emit light at the same time. At the same time, it needs three panels combined with three polarizing beam splitters, which has low efficiency, and the structure is complex, and the optical components used are many, and the optical path is relatively long. Long and large in size, unable to meet the miniaturization and lightweight needs of the market

Method used

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0015] figure 1 Shown is a schematic plan view of the high-efficiency micro-projection optical engine according to the first embodiment of the present invention, which includes a light source module 10, a lens group 30, a polarization converter 40, a fly-eye lens group 50, a polarization beam splitter 60, and a micro-display panel 70 and a projection lens (not shown in the figure). Wherein, the light source module 10 , the lens group 30 , the polarization converter 40 and the fly-eye lens group 50 constitute an illuminating device.

[0016] The light source module 10 includes a light emitting element 102 and a shaping mirror group 103 for collecting and shaping the received light beam. In the embodiment of the present invention, the light emitting element 102 is a light emitting diode (Light Emitting Diode, LED) chip, which is used to emit 18...

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Abstract

The invention discloses an efficient miniature projection optical engine, which comprises a light source module group, a lens group, a micro-display panel and a projection lens. The light source module group comprises a light emitting component and a shaping lens group which collects and shapes received light beams. The lens group is arranged on an emergent light path of the shaping lens group. The shaping lens group and the lens group image a light emitting surface of the light emitting component nearby the micro-display panel. The micro-display panel is arranged on an emergent light path of the lens group, modulates incident light to obtain image light with image information. The projection lens is used for projecting and imaging the image information on the micro-display panel on a screen. The optical engine adopts a critical illumination mode to improve the efficiency, and the whole optical engine only involves an illumination device, the micro-display panel and the projection lens, and the light path has simple design, compact structure and small size.

Description

technical field [0001] The invention relates to projection display technology, in particular to an efficient miniature projection optical engine. Background technique [0002] In recent years, liquid crystal projection technology has been widely used in audio-visual teaching, office, business, advertising and entertainment. With the development of science and technology and the improvement of people's living standards, liquid crystal projection technology is also developing in the direction of miniaturization, light weight and high image quality. [0003] The publication number "CN1609703" in the Chinese Invention Patent Application Publication, titled "Light Emitting Diode Lighting Device", discloses a projector using a light emitting diode lighting device, which includes a red light emitting diode component, a green light emitting diode component and a blue light emitting diode component. The light emitting diode component consists of multiple light emitting diode compone...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/14G02B27/09G02B27/28
CPCH04N9/3197G03B21/14G02B27/1006H04N9/3111H04N9/3173G02B13/16H04N9/315
Inventor 曲鲁杰高国欣林晶和建航王鑫
Owner BUTTERFLY TECH SHENZHEN
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