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Micro projection light engine for near-eye display devices

A micro-projection and near-eye display technology, which is applied in the field of projection, can solve the problems of inapplicability and popularization, large size and volume, and difficulty in meeting the needs of small-volume micro-projection light engines.

Active Publication Date: 2021-06-04
SUNNY OPTICAL ZHEJIANG RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the existing miniature projection light engine usually includes a light source system, a relay mirror group, a display chip and a projection imaging system, wherein the relay mirror group is located in the emission path of the light source system, and the display chip and the projection imaging system are located in The opposite side of the relay mirror group, which leads to the size and volume of the existing micro projection light engine, it is difficult to meet the market's demand for a small volume micro projection light engine, especially in augmented reality, near-eye display And wearable and other fields have been widely used and popularized

Method used

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  • Micro projection light engine for near-eye display devices
  • Micro projection light engine for near-eye display devices
  • Micro projection light engine for near-eye display devices

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Embodiment Construction

[0055] 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.

[0056] 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

A miniature projection light engine for near-eye display devices. The micro projection light engine includes a light source system for emitting polarized light with the same polarization state along a predetermined direction, a display unit for modulating the polarized light into polarized light carrying image information, and a display unit for projecting the polarized light carrying image information. An imaging system for polarized light and a relay system. The relay system is arranged between the light source system, the display unit, and the imaging system, and the light source system and the imaging system are respectively located on opposite sides of the relay system, wherein the relay system is used to change the The propagating direction of the polarized light of the system, so that the polarized light propagates to the display unit; wherein the relay system is also used to change the propagating direction of the polarized light carrying image information from the display unit, so that the polarized light carrying image information Polarized light can propagate to the imaging system along the predetermined direction.

Description

technical field [0001] The invention relates to the field of projection technology, in particular to a miniature projection light engine used for near-eye display equipment. Background technique [0002] In recent years, the emergence of micro-display chip technology has made miniaturization and high-resolution projection display possible. With the continuous development of projection display technology and market demand, more and more attention has been paid to micro projection light engines with large field of view, high image quality, small size, and wearable, especially in today's hot augmented reality (Augmented reality, AR for short), near-eye display (Near-eye display, NED for short) and wearable fields. [0003] However, the existing miniature projection light engine usually includes a light source system, a relay mirror group, a display chip and a projection imaging system, wherein the relay mirror group is located in the emission path of the light source system, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/01G02B27/28
CPCG02B27/0172G02B27/283
Inventor 郑光陈杭郝希应陈远胡增新
Owner SUNNY OPTICAL ZHEJIANG RES INST CO LTD