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Eyepiece optical system with large field of view and high image quality and head-mounted display device

A technology of optical system and field of view, which is applied in the field of optics, can solve the problems of increasing the difficulty of manufacturing optical components, insufficient uniformity of full-frame image quality, increased manufacturing cost and weight, etc., and achieves a high-presence visual experience, compact structure, and system Effect of Aberration Cancellation

Active Publication Date: 2019-05-10
SHENZHEN NED OPTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The eyepiece optical system can achieve the optical effect of super large field of view (>75 degrees), but the image quality of the peripheral field of view is lower than that of the central field of view, and the image quality of the full frame is not uniform enough. At the same time, it needs to use the refractive index Larger optical materials, in the existing known optical materials, materials with high refractive index lead to increased manufacturing cost and weight of products, and increase the difficulty of manufacturing corresponding optical elements

Method used

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  • Eyepiece optical system with large field of view and high image quality and head-mounted display device
  • Eyepiece optical system with large field of view and high image quality and head-mounted display device
  • Eyepiece optical system with large field of view and high image quality and head-mounted display device

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Embodiment 1

[0163] as attached figure 1 As shown, the optical path structure schematic diagram of the eyepiece optical system of the first embodiment of the present invention, from the human eye observation side to the display device I side (from left to right), is successively the diaphragm E, the first lens group G1, the second lens Group G2 and display device I. Wherein, the first lens group G1 is composed of a first lens L1 and a second lens L2, and the second lens group G2 is composed of a third lens L3 and a fourth lens L4. In this embodiment, the first lens L1 is a positive lens, and the second lens L2 is a negative lens, forming a first lens group G1 with negative refractive power, wherein the first lens L1 is a biconvex surface type, and the second lens L2 is a negative lens. The optical surface of lens L2 facing the human eye side is concave toward the human eye, and both the first lens L1 and the second lens L2 are even-order aspheric surfaces to fully correct aberrations such...

Embodiment 2

[0170] as attached Figure 4As shown, the optical path structure schematic diagram of the eyepiece optical system of the second embodiment of the present invention, from the human eye observation side to the display device I side (from left to right), is successively the diaphragm E, the first lens group G1, the second lens Group G2 and display device I. Wherein, the first lens group G1 is composed of a first lens L1 and a second lens L2, and the second lens group G2 is composed of a third lens L3 and a fourth lens L4. In this embodiment, the first lens L1 is a positive lens, and the second lens L2 is a negative lens, forming a first lens group G1 with negative refractive power, wherein the first lens L1 is a biconvex surface type, and the second lens L2 is a negative lens. The optical surface of lens L2 facing the human eye side is concave toward the human eye, and both the first lens L1 and the second lens L2 are even-order aspheric surfaces to fully correct aberrations suc...

Embodiment 3

[0177] as attached Figure 7 As shown, the optical path structure schematic diagram of the eyepiece optical system of the third embodiment of the present invention, from the human eye observation side to the display device I side (from left to right), followed by diaphragm E, first lens group G1, second lens Group G2 and display device I. Wherein, the first lens group G1 is composed of a first lens L1 and a second lens L2, and the second lens group G2 is composed of a third lens L3 and a fourth lens L4. In this embodiment, the first lens L1 is a positive lens, and the second lens L2 is a negative lens, forming a first lens group G1 with negative refractive power, wherein the first lens L1 is a biconvex surface type, and the second lens L2 is a negative lens. The optical surface of lens L2 facing the human eye side is concave toward the human eye, and both the first lens L1 and the second lens L2 are even-order aspheric surfaces to fully correct aberrations such as distortion,...

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Abstract

The invention relates to a large-visual-field-angle high-image-quality eyepiece optical system and a head-mounted display device. The large-visual-field-angle high-image-quality eyepiece optical system comprises a first lens group and a second lens group which are coaxially and sequentially arranged from a human eye to an image source along an optical axis direction, wherein the first lens group and the second lens group satisfy a certain focal length relationship. The effective focal length of the first lens group is a negative value, and the first lens group is composed of a first lens close to the human eye and a second lens away from the human eye. The effective focal length of the second lens group is a positive value, and the second lens group is composed of one or two pieces of lenses. The first lens is in a biconvex shape, the optical surface, close to the human eye, of the second lens is recessed towards the human eye, and the first lens and the second lens are each of an aspheric surface type. The distance between the first lens and the second lens, a focal length relationship between lenses in the second lens group, and material characteristics of the lenses satisfy certain relationships, and the second lens group further comprises a fourth lens. The large-visual-field-angle high-image-quality eyepiece optical system has the advantages of large aperture, large field of view, high resolution, low distortion, small size and the like, and is suitable for the head-mounted display and similar devices.

Description

technical field [0001] The invention relates to the field of optical technology, in particular to an eyepiece optical system with a large field of view and high image quality suitable for a head-mounted display or similar devices and a head-mounted display device. Background technique [0002] With the continuous development of electronic devices towards ultra-miniaturization, as well as the development of new computer, microelectronics, optoelectronic devices and communication theories and technologies, wearable computing, a new model based on "people-oriented" and "integration of man and machine" has become possible. . Applications are emerging in military, industrial, medical, education, consumer and other fields. In a typical wearable computing system architecture, the head-mounted display device is a 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,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B25/04G02B25/00G02B27/01
CPCG02B25/001G02B25/04G02B27/0172
Inventor 不公告发明人
Owner SHENZHEN NED OPTICS CO LTD
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