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Diffractive optical element and preparation method thereof, under-screen optical system and electronic equipment

A technology of diffractive optical elements and screens, which is applied in the field of optics and can solve problems such as unsatisfactory offset effects of diffraction effects

Active Publication Date: 2020-10-23
NANCHANG OUFEI BIOLOGICAL IDENTIFICATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In the process of implementing the present application, the inventor found that the following problems still exist in the prior art: under the influence of high-order diffraction effects and different light angles on the display, the compensation effect of the existing compensation elements on the diffraction effect is not ideal

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Embodiment Construction

[0062] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0063] It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be an intervening element at the same time. When an element is referred to as being "disposed on" another element, it can be directly disposed on the other element or intervening elements may also be present.

[0064] Unless otherwise defined, all technical and scientific terms used here...

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Abstract

The invention provides a preparation method of a diffractive optical element. An iterative Fourier transform analysis method is used, and high-order diffraction generated when light penetrates througha transparent display screen is reduced. The invention also provides the diffractive optical element prepared by using the method, an under-screen optical system with the diffractive optical elementand electronic equipment. The physical unit parameters of the diffractive optical element are obtained by using the iterative Fourier transform analysis method so that the diffractive optical elementcan reduce the optical diffraction effect generated when the light passes through the corresponding transparent display screen, thereby improving the image quality.

Description

technical field [0001] The invention relates to the field of optical technology, in particular to a diffractive optical element, a preparation method thereof, an under-screen optical system and electronic equipment. Background technique [0002] At present, consumers have higher and higher requirements for the display effect of the display screen of electronic devices such as smart phones, but due to the influence of diffraction effect, there will be specks on the display screen, which affects the picture effect. In order to eliminate the influence of the diffraction effect, an optical compensation element is usually pasted under the display, and the optical compensation element can offset part of the influence of the diffraction effect. [0003] In the process of implementing the present application, the inventors found that there are still the following problems in the prior art: under the influence of high-order diffraction effects and different light angles on the displa...

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Application Information

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IPC IPC(8): G02B5/18G02B27/42G06F17/14
CPCG02B5/1847G02B27/4205G06F17/141
Inventor 鞠晓山冯坤亮李宗政
Owner NANCHANG OUFEI BIOLOGICAL IDENTIFICATION TECH