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Asymmetric illuminating system and asymmetric projecting device

A projection device, asymmetric technology, applied in lighting devices, lighting device parts, projection devices, etc., can solve the problems of light energy loss, low light utilization rate, etc.

Inactive Publication Date: 2012-11-07
APAC OPTO ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since light can be effectively utilized by the projection device only through corresponding two lenses, yet each lens in the existing lens array is a rectangular lens, so that the incident lens 10a and lens 12a on the first plane (i.e. XZ plane) Effective light angle θ X Greater than the effective ray angle θ between the incident lens 10a and the lens 12a on the second plane (that is, the YZ plane) Y , causing the effective light incident on the second plane lens 10a and lens 12a to be less than the effective light incident on the first plane plane lens 10a and lens 12a, thereby causing the loss of light energy effectively available on the second plane (lens array 60a and lens array 62a The other corresponding two lenses in the same analogy)
Therefore, the existing projection device has the problem that the utilization rate of light is not high

Method used

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  • Asymmetric illuminating system and asymmetric projecting device
  • Asymmetric illuminating system and asymmetric projecting device
  • Asymmetric illuminating system and asymmetric projecting device

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Embodiment Construction

[0043] Below in conjunction with accompanying drawing, structural principle and working principle of the present invention are specifically described:

[0044] Please refer to Figure 2A and Figure 2B , are schematic cross-sectional structural diagrams on the first plane and the second plane respectively according to an embodiment of the asymmetric projection device disclosed in the present invention. The asymmetric projection device 100 includes an asymmetric lighting system 102 and a panel 104 . In this embodiment, the asymmetric projection device 100 can be but not limited to a digital light processing projector (Digital Light Processing Projector, DLP Projector), and the panel 104 can be but not limited to a digital micromirror device (Digital Micromirror Device, DMD) . The asymmetric lighting system 102 may include but not limited to a light source module 110 , a lens array 112 a , a lens array 112 b , an illumination lens group 70 and a light concentrating element 10...

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Abstract

An asymmetric illuminating system and an asymmetric projecting device are provided. The asymmetric illuminating system comprises a lens array and a condensing element, wherein the condensing element has different focal lengths in a first axial direction and a second axial direction. The lens array receives lights to form multiple square light beams. The condensing element can receive each square light beam and adjust the length-width ratio of the square light beams according to the difference in the focal lengths in the first and second axial directions, so as to project a rectangular light beam.

Description

technical field [0001] The invention relates to an illumination system and a projection device, in particular to an asymmetric illumination system and an asymmetric projection device. Background technique [0002] In recent years, projection devices have been widely used in conference rooms, large venues, movie theaters, and home theater groups to provide large-area images. Generally speaking, the more common projection devices are Liquid Crystal Display (LCD) projection devices, Digital Light Processing (DLP) projection devices, and Liquid Crystal on Silicon (LCoS) projection devices. device. A liquid crystal display projection device belongs to a transmissive projector because the light passes through the liquid crystal display panel in a penetrating manner during operation. The digital light processing projection device and the silicon-based liquid crystal projection device are projected by means of reflection of light, and belong to reflective projectors. Wherein, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/14G03B21/20G02B3/00G02B27/10F21V5/04
Inventor 孔建平洪维毅卢文记许焜程
Owner APAC OPTO ELECTRONICS