Miniature projection light engine based on DLP technology

A micro-projection and light engine technology, applied in the field of projection, can solve the problems that the light engine cannot meet the requirements of small size and light weight, heavy weight, and cannot meet the development trend of miniaturization of electronic equipment, etc.

Inactive Publication Date: 2020-08-04
SUNNY OPTICAL ZHEJIANG RES INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the current challenges faced by micro-projection light engines mainly lie in the volume and weight of the light engine. In particular, the existing light engines based on DLP technology are large in size and heavy in weight, which

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  • Miniature projection light engine based on DLP technology
  • Miniature projection light engine based on DLP technology
  • Miniature projection light engine based on DLP technology

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Embodiment Construction

[0044] The following description serves to disclose the present invention to enable those skilled in the art to carry out the present invention. The preferred embodiments described below are only examples, and those skilled in the art can devise other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents and other technical solutions without departing from the spirit and scope of the present invention.

[0045] Those skilled in the art should understand that in the disclosure of the present invention, the terms "vertical", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientation or positional relationship indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present invention...

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Abstract

The invention discloses a miniature projection light engine based on a DLP technology. The miniature projection light engine comprises a lighting system adopting a collimation and color combination design and used for providing illumination light; a digital micromirror device used for modulating the illumination light into image light; an imaging system designed by adopting at least one aspheric imaging lens group and used for projecting image light for imaging; and a relay system arranged among the lighting system, the digital micromirror device and the imaging system, so that a total reflection illumination light path is formed between the lighting system and the digital micromirror device through the relay system, and a total reflection imaging light path is formed between the digital micromirror device and the imaging system through the relay system, wherein the relay system is used for diverting propagation of the illumination light to the digital micromirror device along the total reflection illumination light path, and the relay system is also used for diverting transmission of the image light to the imaging system along the total reflection imaging light path.

Description

technical field [0001] The invention relates to the field of projection technology, in particular to a miniature projection light engine based on DLP technology. Background technique [0002] With the maturity of micro projector technology in recent years, micro projectors have officially stepped out of the concept stage and gradually entered the stage of commercialization. More and more handheld projectors, projection media players, projection mobile phones, wearable displays Devices (such as AR glasses, etc.) have begun to appear on the market, and more and more new micro-projection application modes have also begun to appear, allowing us to see the dawn of projection anytime, anywhere. [0003] Micro-projection display methods are usually developed based on projection display chips. At present, the main display chips with relatively mature technology include TFI-LCD chips, LCoS chips and DMD chips (that is, digital micromirror devices). However, among the three display c...

Claims

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Application Information

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IPC IPC(8): G03B21/00G03B21/14G03B21/20
CPCG03B21/008G03B21/142G03B21/2066G03B21/208
Inventor 张倩郝希应郑光胡增新陈远
Owner SUNNY OPTICAL ZHEJIANG RES INST CO LTD
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