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Optical system and head-mounted display device

An optical system and display unit technology, applied in the field of virtual reality, can solve the problems of large chromatic aberration and low imaging resolution, and achieve the effects of reducing chromatic aberration, high-resolution imaging, and improving resolution

Active Publication Date: 2022-03-25
GOERTEK OPTICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to provide an optical system and a head-mounted display device to improve the imaging resolution for the problem of low imaging resolution and large chromatic aberration when the head-mounted display device has a large field of view and a small image height. Reduce chromatic aberration of imaging

Method used

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  • Optical system and head-mounted display device
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  • Optical system and head-mounted display device

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Experimental program
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Effect test

no. 1 example

[0063] In the first embodiment, the light of the first lens is 0.0066, the optical focus of the second lens is -0.00607, the third lens is discharged is 0.0138, the first lens into the light surface and the third lens The difference between the radius of curvature of the light surface is 10 mm, and the design data of the optical system is shown in Table 1:

[0064] Table 1

[0065]

[0066] Among them, the thickness represents the distance from the next optical surface from the optical surface, and the material represents this material between the optical surface to the next optical surface, A4, A6, A8 represents the high-secondary coefficient of the face calculation. .

[0067] Please refer to Figure 4 , Figure 4 For the modulation transfer function diagram of the first embodiment, the modulation transfer function (MTF) is an indication system and the relationship between the logarithm of the logarithm of the image, for evaluating the ability to restore the properties of the sc...

no. 2 example

[0071] In the second embodiment, the light of the first lens is 0.0066, the light of the second lens is -0.00645, the third lens is 0.016, the first lens, the optical surface, the third lens The difference between the radius of curvature of the light surface is 4.2mm, and the design data of the optical system is shown in Table 2:

[0072] Table 2

[0073]

[0074]

[0075] Among them, the thickness represents the distance from the next optical surface from the optical surface, and the material represents this material between the optical surface to the next optical surface, A4, A6, A8 represents the high-secondary coefficient of the face calculation. .

[0076] Please refer to Figure 7 , Figure 7 For the modulation transfer function diagram of the second embodiment, the modulation transfer function (MTF) is an indication system and the relationship between the logarithm of the logarithm per millimeter line for evaluating the reducing capacity of the scene. The higher the longi...

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Abstract

The invention discloses an optical system and a head-mounted display device, the optical system sequentially comprises a light splitting part, a first lens, a second lens and a third lens along the light transmission direction, the first lens has positive focal power, the second lens has negative focal power, the third lens has positive focal power, the light incident surface of the third lens is provided with a polarization reflection film, and the light incident surface of the third lens is provided with a polarization reflection film. The refractive index of the first lens is defined as n1, the refractive index of the second lens is defined as n2, the refractive index of the third lens is defined as n3, the dispersion coefficient of the first lens is defined as v1, the dispersion coefficient of the second lens is defined as v2, the dispersion coefficient of the third lens is defined as v3, and n1lt is defined; n1, n2, n2gt; n3, v1gt; v1, v2, v2lt; and v3. According to the technical scheme, chromatic aberration can be effectively reduced, and the imaging resolution is improved.

Description

Technical field [0001] The present invention relates to the field of virtual reality, and more particularly to an optical system and a header display device. Background technique [0002] With the development of science and technology, the head wear display equipment has gradually developed in a large size, light weight and high portability. [0003] In order to meet the small volume requirements, the size of the display in the head wear display device is getting smaller and smaller, and the field of view is getting bigger and bigger. This requires the head to display the display device to meet the large field of view, while the small image is high, it needs to ensure the high resolution, low color difference. Inventive content [0004] Based on this, it is necessary to provide an optical system and head-mounted display device to improve the resolution of the imaging in the large-view field, small image resolution, a large color difference. Reduce the color difference of imaging...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/01
CPCG02B27/0172
Inventor 史柴源
Owner GOERTEK OPTICAL TECH CO LTD