Catadioptric eyepiece optical system and head-mounted display device

An optical system, catadioptric technology, applied in the optical field, to achieve the effect of light weight, easy processing and assembly, and large field of view

Pending Publication Date: 2021-03-26
SHENZHEN NED OPTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To meet these requirements, the eyepiece optical system needs to achieve large field of view, high image resolution, low distortion, small field curvature, small volume and other indicators as much as possible. At the same time, meeting the above optical properties is very important for system design and aberration optimization. challenge

Method used

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  • Catadioptric eyepiece optical system and head-mounted display device
  • Catadioptric eyepiece optical system and head-mounted display device
  • Catadioptric eyepiece optical system and head-mounted display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0102] attached figure 1 It is a 2D structural diagram of the eyepiece optical system of the first embodiment, including an optical polarizer L5, a first phase retarder L4, a first lens group A1, The second lens group A2, the third lens group A3, the second phase retarder L4, and the linear polarizer L5; wherein, the optical polarizer L5 can selectively project the linearly polarized light p light and reflect the linearly polarized light s light; or, can Selectively project linearly polarized light s and reflect linearly polarized light p; a semi-transparent and semi-reflective optical surface L3 is included between the first lens group A1, the second lens group A2 and the third lens group A3. The first lens group A1 in the optical system is composed of the first lens D1, the first lens D1 is a plano-convex lens; the second lens group A2 is composed of the second lens D2, the second lens D2 is a biconcave lens, and the third lens group A3 is composed of Composed of the third ...

Embodiment 2

[0108] attached Figure 5 It is a 2D structural diagram of the eyepiece optical system of the second embodiment, including an optical polarizer L5, a first phase retarder L4, a first lens group A1, The second lens group A2, the third lens group A3, the second phase retarder L4, and the linear polarizer L5; wherein, the optical polarizer L5 can selectively project the linearly polarized light p light and reflect the linearly polarized light s light; or, can Selectively project linearly polarized light s and reflect linearly polarized light p; a semi-transparent and semi-reflective optical surface L3 is included between the first lens group A1, the second lens group A2 and the third lens group A3. The first lens group A1 in the optical system is composed of the first lens D1, and the first lens D1 is a plano-convex lens; the second lens group A2 is composed of the second lens D2, and the second lens D2 is a biconcave lens; the third lens group A3 is composed of Composed of the ...

Embodiment 3

[0114] attached Figure 9 It is a 2D structural diagram of the eyepiece optical system of the third embodiment, including an optical polarizer L5, a first phase retarder L4, a first lens group A1, The second lens group A2, the third lens group A3, the second phase retarder L4, and the linear polarizer L5; wherein, the optical polarizer L5 can selectively project the linearly polarized light p light and reflect the linearly polarized light s light; or, can Selectively project linearly polarized light s and reflect linearly polarized light p; a semi-transparent and semi-reflective optical surface L3 is included between the first lens group A1, the second lens group A2 and the third lens group A3. The first lens group A1 in the optical system is composed of the first lens D1, and the first lens D1 is a plano-convex lens; the second lens group A2 is composed of the second lens D2, and the second lens D2 is a biconcave lens; the third lens group A3 is composed of The third lens D3...

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Abstract

The invention relates to a catadioptric eyepiece optical system and a head-mounted display device. The system comprises an optical polaroid, a first phase retardation film, a first lens group, a second lens group, a third lens group, a second phase retardation film and a linear polaroid which are sequentially arranged from a human eye observation side to a micro image display along an optical axisdirection, each of the first lens group, the second lens group and the third lens group comprises one or more lenses; a unique semi-transparent and semi-reflective optical surface is arranged betweenthe first phase retardation film and the second phase retardation film; the semi-transparent and semi-reflective optical surface is arranged on one optical surface of the first lens group, the secondlens group or the third lens group; the first lens group and the third lens group are positive focal power lens groups; the second lens group is a negative focal power lens group; the system realizesoptical indexes such as large field angle, low distortion, low chromatic aberration, low field curvature, low astigmatism and the like, and is compact in size, light in weight and convenient to wearon the head.

Description

technical field [0001] The invention relates to the field of optical technology, more specifically, to a catadioptric eyepiece optical system and a head-mounted display device. Background technique [0002] With the continuous update and progress of head-mounted display technology, applications are emerging in military, industrial, medical, education, consumer and other fields. While ensuring large field of view and high-quality imaging effects, head-mounted display products also The thinner and lighter products also put forward higher requirements. [0003] Patent Document 1 (Chinese Patent Publication No. CN108957732A), Patent Document 2 (Chinese Patent Publication No. CN109313340A), Patent Document 3 (Chinese Patent Publication No. CN207946592U), Patent Document 4 (US Patent Publication No. US10133074) all adopt catadioptric optics System form. Among them, the lens group of Patent Document 1 adopts a positive-negative structure, the lens group of Patent Document 2 adopt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B25/00G02B27/01
CPCG02B25/001G02B27/0172
Inventor 郭健飞曹鸿鹏彭华军
Owner SHENZHEN NED OPTICS CO LTD
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