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Reflection type eyepiece optical system and head-mounted near-eye display device

An optical system and reflective technology, applied in the optical field, can solve the problems of heavy optical structure, insufficient field of view, and low image quality, and achieve the effects of reducing cost and weight, improving optical indicators, and increasing size

Active Publication Date: 2021-09-03
SHENZHEN NED OPTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is that the existing optical structure is heavy, the image quality is not high, there is distortion, the viewing angle is not large enough, and mass production is difficult. Eyepiece optical system and head-mounted near-eye display device

Method used

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  • Reflection type eyepiece optical system and head-mounted near-eye display device
  • Reflection type eyepiece optical system and head-mounted near-eye display device
  • Reflection type eyepiece optical system and head-mounted near-eye display device

Examples

Experimental program
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Effect test

no. 1 example

[0159] The eyepiece design data of the first embodiment are shown in Table 1 below:

[0160]

[0161] attached figure 1 It is the optical system light path diagram of the first embodiment, including the first lens group T1, and the first optical element L1 and the second lens group T2 for transmitting and reflecting light from the micro image display IMG; the second lens group T2 includes An optical reflective surface S2, and the optical reflective surface S2 is the optical surface farthest from the observation side of the human eye in the second lens group T2; the optical reflective surface S2 is concave to the viewing direction of the human eye; the first optical element L1 will pass through the first lens The light refracted by the group T1 is reflected to the second lens group T2, and then the light refracted, reflected and refracted by the second lens group T2 is transmitted to the human eye EYE.

[0162]Wherein the first lens group T1 includes the first sub-lens grou...

no. 2 example

[0166] The eyepiece design data of the second embodiment are shown in the following table two:

[0167]

[0168] attached Figure 5 It is the optical system light path diagram of the second embodiment, including the first lens group T1, and the first optical element L1 and the second lens group T2 for transmitting and reflecting light from the micro image display IMG; the second lens group T2 includes An optical reflective surface S2, and the optical reflective surface S2 is the optical surface farthest from the observation side of the human eye in the second lens group T2; the optical reflective surface S2 is concave to the viewing direction of the human eye; the first optical element L1 will pass through the first lens The light refracted by the group T1 is reflected to the second lens group T2, and then the light refracted, reflected and refracted by the second lens group T2 is transmitted to the human eye EYE.

[0169] Wherein the first lens group T1 includes the first...

no. 3 example

[0173] The eyepiece design data of the third embodiment are shown in Table 3 below:

[0174]

[0175] attached Figure 9 It is the optical system light path diagram of the third embodiment, including the first lens group T1, and the first optical element L1 and the second lens group T2 for transmitting and reflecting light from the micro image display IMG; the second lens group T2 includes An optical reflective surface S2, and the optical reflective surface S2 is the optical surface farthest from the observation side of the human eye in the second lens group T2; the optical reflective surface S2 is concave to the viewing direction of the human eye; the first optical element L1 will pass through the first lens The light refracted by the group T1 is reflected to the second lens group T2, and then the light refracted, reflected and refracted by the second lens group T2 is transmitted to the human eye EYE.

[0176] Wherein the first lens group T1 includes the first sub-lens gr...

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Abstract

The invention relates to a reflection type eyepiece optical system and a head-mounted near-eye display device. The system comprises a first lens group, a first optical element and a second lens group, wherein the first optical element and the second lens group are used for transmitting and reflecting light from a micro image display; the second lens group comprises an optical reflecting surface, and the optical reflecting surface is an optical surface farthest from the human eye observation side in the second lens group; the optical reflecting surface is concave towards the viewing direction of human eyes; the first optical element reflects the light refracted by the first lens group to the second lens group, and transmits the light refracted by the second lens group, reflected and refracted to human eyes; the first lens group comprises a first sub-lens group, a second sub-lens group, a third sub-lens group and a fourth sub-lens group which are coaxially and sequentially arranged along the optical axis direction from the human eye viewing side to the micro image display side; through the focal length combination of each lens group, the optical path is effectively folded, the overall size is reduced, the aberration is greatly eliminated, and the visual experience with high telepresence is achieved.

Description

technical field [0001] The invention relates to the field of optical technology, more specifically, to a reflective eyepiece optical system and a head-mounted near-eye display device. Background technique [0002] With the continuous development of electronic devices towards ultra-miniaturization, head-mounted display devices and products are increasingly used in military, industrial, medical, education, consumer and other fields. In a typical wearable computing system architecture, head-mounted display devices are key component. The head-mounted display device guides the video image light emitted by the micro-image display (such as transmissive or reflective liquid crystal display, organic electroluminescent device, DMD device) to the user's pupil through optical technology, and in the user's near-eye The scope realizes virtual and magnified images, and provides users with intuitive and visual images, videos, and text information. The eyepiece optical system is the core o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B25/00G02B27/01
CPCG02B25/001G02B27/0172G02B2027/0123G02B17/08G02B17/0852G02B15/144105G02B15/142G02B15/144113G02B9/04G02B13/003G02B13/007G02B17/0896G02B2027/0127G02B2027/013G02B2027/0178
Inventor 彭华军曹鸿鹏郭健飞
Owner SHENZHEN NED OPTICS CO LTD
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