Reflective eyepiece optical system and head-mounted near-eye display device

An optical system and reflective technology, applied in the field of optics, 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: 2022-08-02
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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  • Reflective eyepiece optical system and head-mounted near-eye display device
  • Reflective eyepiece optical system and head-mounted near-eye display device
  • Reflective eyepiece optical system and head-mounted near-eye display device

Examples

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Effect test

no. 1 example

[0137] The eyepiece design data of the first embodiment are shown in Table 1 below:

[0138]

[0139] attached figure 1 It is an optical path diagram of the optical system of the first embodiment, including a first lens group T1, and a first optical element L1 and a second lens group T2 for transmitting and reflecting light from the micro-image display IMG; the second lens group T2 includes An optical reflection surface S2, and the optical reflection surface S2 is the optical surface farthest from the viewing side of the human eye in the second lens group T2; the optical reflection 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 then refracted by the second lens group T2 is transmitted to the human eye EYE.

[0140] Effective focal length f of the eyepiece optical system w ...

no. 2 example

[0144] The eyepiece design data of the second embodiment are shown in Table 2 below:

[0145]

[0146] attached Figure 5 It is an optical path diagram of the optical system of the second embodiment, including a first lens group T1, and a first optical element L1 and a second lens group T2 for transmitting and reflecting light from the micro-image display IMG; the second lens group T2 includes An optical reflection surface S2, and the optical reflection surface S2 is the optical surface farthest from the viewing side of the human eye in the second lens group T2; the optical reflection 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 then refracted by the second lens group T2 is transmitted to the human eye EYE.

[0147] Effective focal length f of the eyepiece optical system ...

no. 3 example

[0151] The eyepiece design data of the third embodiment are shown in Table 3 below:

[0152]

[0153] attached Figure 9 It is the optical path diagram of the optical system of the third embodiment, including a first lens group T1, and a first optical element L1 and a second lens group T2 for transmitting and reflecting light from the micro-image display IMG; the second lens group T2 includes An optical reflection surface S2, and the optical reflection surface S2 is the optical surface farthest from the viewing side of the human eye in the second lens group T2; the optical reflection 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 then refracted by the second lens group T2 is transmitted to the human eye EYE.

[0154] Effective focal length f of the eyepiece optical system ...

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Abstract

The invention relates to a reflective eyepiece optical system and a head-mounted near-eye display device. The system comprises: a first lens group, and a first optical element and a second lens group for transmitting and reflecting light from a micro-image display; The two lens groups include an optical reflection surface, and the optical reflection surface is the optical surface farthest from the viewing side of the human eye in the second lens group; the optical reflection surface is concave to the viewing direction of the human eye; the first optical element will pass through the first lens group. The refracted light is reflected to the second lens group, and then the light refracted, reflected and re-refracted by the second lens group is transmitted to the human eye; The first sub-lens group and the second sub-lens group are arranged in sequence; the focal lengths between the lenses are negative, positive, and positive, which effectively folds the optical path, reduces the overall size, and achieves substantial elimination of aberrations , to achieve a high-presence visual experience.

Description

technical field [0001] The present invention relates to the field of optical technology, and more particularly, to a reflective eyepiece optical system and a head-mounted near-eye display device. Background technique [0002] With the continuous development of ultra-miniaturization of electronic devices, head-mounted display devices and products are constantly emerging 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 miniature image display (such as transmissive or reflective liquid crystal display, organic electroluminescent device, DMD device) to the user's pupil through optical technology, and the user's near vision. The scope realizes virtual and enlarged images, and provides users with intuitive and visible images, videos, and text information. The eyepiece optical system...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B25/00G02B27/01
CPCG02B25/001G02B27/0172G02B17/08G02B2027/0123G06F1/163
Inventor 彭华军曹鸿鹏郭健飞
Owner SHENZHEN NED OPTICS CO LTD
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