Reflective 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 possibilities

Active Publication Date: 2021-08-31
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

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0131] The eyepiece design data of the first embodiment are shown in Table 1 below:

[0132]

[0133] attached figure 1 It is the optical path diagram of the eyepiece optical system 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 Contains an optical reflection surface S2, and the optical reflection surface S2 is the optical surface farthest from the observation 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 The light refracted by the lens 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.

[0134] Wherein the first lens group T1 includes the fir

no. 2 example

[0138] The eyepiece design data of the second embodiment are shown in Table 2 below:

[0139]

[0140] attached Figure 5 It is the optical path structure 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 a The 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 human eye viewing direction; the first optical element L1 will pass through the first lens group The light refracted by 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.

[0141] Wherein the first lens group T1 includes the first sub-lens group T11 and

no. 3 example

[0145] The eyepiece design data of the third embodiment are shown in Table 3 below:

[0146]

[0147] attached Figure 9 It is the optical path structure 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 a The 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 human eye viewing direction; the first optical element L1 will pass through the first lens group The light refracted by 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.

[0148]Wherein the first lens group T1 includes the first sub-lens group T11 and the

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PUM

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Abstract

The invention relates to a reflective eyepiece optical system and a head-mounted near-to-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 miniature 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 and a second 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; the effective focal lengths of the first sub-lens group and the second sub-lens group are positive and negative combinations; and the optical path is effectively folded, the overall size is reduced, aberration is greatly eliminated, and the visual experience with high telepresence is achieved.

Description

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Claims

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Application Information

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Owner SHENZHEN NED OPTICS CO LTD
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