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Crescent VR lens system

A lens system and meniscus technology, applied in the field of VR lens systems, can solve the problems of reducing the volume and weight of the VR system to the extreme, and achieve the effect of reducing volume and weight, weight and thickness, and reducing weight and thickness

Inactive Publication Date: 2017-06-27
YEJIA OPTICAL TECH GUANGDONG CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The VR lenses on the market are mainly divided into planar Fresnel structure or convex Fresnel structure. Although a part of the volume and weight is reduced, it does not reduce the volume and weight of the VR system to the extreme.

Method used

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  • Crescent VR lens system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1, the optical effective surface of S1 is an aspherical structure, S1 protrudes toward the side away from S2, the optical effective surface of S2 is a Fresnel structure, S2 is recessed toward S1, forming a meniscus lens, and S1 faces the human eye, S2 faces the screen.

[0027] Table 1, the design parameter of embodiment one

[0028]

[0029] Table 2, the aspheric surface design parameters of embodiment one

[0030]

[0031] According to the parameters of Table 1 and Table 2, the VR lens system of Embodiment 1 is designed, and the optical path diagram of the imaging system formed is a reference Figure 4 , the optical performance of the imaging reference Figure 5 , Figure 5 The left curve is the field curvature curve, and the right curve is the distortion curve. Field curvature is the abbreviation of image field curvature. It is a kind of aberration caused by the object plane forming a curved surface image. The aberration caused by the increase an...

Embodiment 2

[0032] Embodiment 2, the optical effective surface of S1 is an aspherical structure, S1 protrudes toward the side away from S2, the optical effective surface of S2 is a Fresnel structure, S2 is recessed toward S1, forming a meniscus lens, and S1 faces the human eye, S2 faces the screen.

[0033] Table 3, the design parameter of embodiment two

[0034]

[0035]

[0036] Table 4, the aspheric surface design parameters of embodiment two

[0037]

[0038] According to the parameters of Table 3 and Table 4, the VR lens system of Embodiment 1 is designed, and the optical path diagram of the imaging system formed is a reference Figure 6 , the optical performance of the imaging reference Figure 7 , Figure 7 The left curve is the field curvature curve, and the right curve is the distortion curve. Field curvature is the abbreviation of image field curvature. It is a kind of aberration caused by the object plane forming a curved surface image. The aberration caused by the...

Embodiment 3

[0039] Embodiment 3, the optical effective surface of S1 is an aspherical structure, S2 protrudes toward the side away from S1, the optical effective surface of S2 is a Fresnel structure, S1 is concave toward S2, forming a meniscus lens, and S1 faces the human eye, S2 faces the screen.

[0040] Table 5, the design parameters of embodiment three

[0041]

[0042] Table 6, the aspheric surface design parameters of embodiment three

[0043]

[0044] According to the parameters of Table 5 and Table 6, the VR lens system of Embodiment 1 is designed, and the optical path diagram of the imaging system formed is a reference Figure 8 , the optical performance of the imaging reference Figure 9 , Figure 9 The left curve is the field curvature curve, and the right curve is the distortion curve. Field curvature is the abbreviation of image field curvature. It is a kind of aberration caused by the object plane forming a curved surface image. The aberration caused by the increas...

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PUM

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Abstract

The present invention provides a crescent VR lens system, and relates to a VR lens system. The VR lens system comprises a crescent lens and a screen. The crescent lens comprises two surfaces S1 and S2, the optical effective surface of the S2 is a Fresnel structure, and the two surfaces S1 and S2 form the crescent lens. The crescent VR lens system designs the crescent lens to substantially reduce the weight and the thickness of the lens, compared to a traditional aspheric VR lens, the weight and the thickness of the crescent lens reduces 70%, and compared to a traditional Fresnel VR lens, the weight and the thickness of the crescent lens reduces 50%, so that the weight and the size of the VR system are further reduced.

Description

technical field [0001] The invention relates to a VR lens system, and specifically discloses a meniscus VR lens system. Background technique [0002] The optical part of the VR system generally adopts the cooperation of the screen and the lens, so that the user can clearly see the image of the 3-7cm screen in front of the user through the lens. The VR lens mostly uses an aspherical lens, and the structure of the aspheric lens is as follows: figure 1 As shown in a; since the pupillary distances of different regions and different genders are different, in order to adapt to the crowds with different pupillary distances, the outer diameter of the aspheric surface of the VR lens needs to be relatively large. At the same time, the VR system has a large field of view and a short back For intercept requirements, the focal length of the lens usually needs to be made relatively small, and the focal length of the mainstream VR lens is about 40mm; because the outer diameter of the asphe...

Claims

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Application Information

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IPC IPC(8): G02B3/08G02B27/01
CPCG02B27/0101G02B27/0172G02B3/08
Inventor 赵烈烽南基学
Owner YEJIA OPTICAL TECH GUANGDONG CORP