Eyepiece system and head-mounted display device

A technology of eyepiece and display screen, applied in the field of optics, can solve the problem of unclear edge imaging of the optical system, and achieve the effect of improving the image quality of edge imaging, reducing field curvature, and reducing astigmatism

Active Publication Date: 2016-10-12
BEIJING PICO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above problems, the present invention provides an eyepiece system and a head-mounted display device to solve the problem of unclear edge imaging of an optical system composed of a single lens

Method used

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  • Eyepiece system and head-mounted display device

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Embodiment 1

[0033] figure 1 It is a schematic diagram of the imaging of the eyepiece system. After being imaged by the lens, the light emitted by the display screen forms a huge virtual image at 2m in front of the human eye, and then is received by the human eye, thus giving people a shocking feeling. The function of the lens in the present invention is similar to that of a magnifying glass, which enlarges the information on the display screen and then forms a virtual image in the distance.

[0034] When designing the eyepiece system, reverse tracing is adopted, so that the image plane of the eyepiece system is the display screen, the object plane is the virtual image generated by the eyepiece system, the pupil of the human eye is located at the optical path diaphragm, and the lens is located between the optical path diaphragm and the display screen.

[0035] Since the chromatic aberration of the optical system composed of a single lens can be compensated by software, and astigmatism and ...

Embodiment 2

[0058] Based on the same inventive concept as in Embodiment 1, this embodiment provides a head-mounted display device, which includes a symmetrical left-eye eyepiece system and a right-eye eyepiece system, and a left-eye eyepiece system and a right-eye eyepiece system The eyepiece system in Embodiment 1 is used.

[0059] In summary, the eyepiece system of the present invention adopts the technical means of combining a Fresnel lens and a spherical display screen, and by reasonably setting the surface shape of the Fresnel lens, shares the power of the eyepiece system and reduces the astigmatism of the system; And, by rationally setting the spherical display screen, the field curvature of the system is reduced, so as to improve the image quality of edge imaging.

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Abstract

The invention discloses an eyepiece system and a head-mounted display device. The eyepiece system a spherical display screen and a Fresnel lens which are sequentially arranged along the incident direction of light; the center line of the spherical display screen is overlapped with a horizontal line where the optical axis of the Fresnel lens is located; the spherical display screen protrudes towards the Fresnel lens; and the Fresnel lens is provided with a first surface protruding towards a light path diaphragm and a second surface protruding towards the spherical display screen. According to the eyepiece system provided by the technical schemes of the invention, a Fresnel lens and spherical display screen-combined technical means is adopted; the surface shapes of the Fresnel lens are reasonably set, so that the focal power of the eyepiece system can be shared, and the astigmatism of the system can be reduced; and the spherical display screen is set reasonably, so that the curvature of field of the system can be decreased, and edge imaging quality can be improved.

Description

technical field [0001] The invention relates to the field of optical technology, in particular to an eyepiece system and a head-mounted display device. Background technique [0002] At present, most of the optical systems of Virtual Reality (VR) are composed of single lenses, which cannot correct the chromatic aberration, astigmatism and curvature of field caused by the edges, especially when the field of view of the VR optical system is larger, thus The resulting edge imaging is less clear. Since chromatic aberration can be compensated by software, astigmatism and field curvature are the main reasons for the degradation of edge imaging quality. [0003] Based on the above description, a new type of eyepiece system is urgently needed. To meet the edge imaging under the large field of view of the VR optical system Contents of the invention [0004] In view of the above problems, the present invention provides an eyepiece system and a head-mounted display device to solve ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B25/00G02B27/01
Inventor 王元鹏
Owner BEIJING PICO TECH
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