A Diffraction Optical Waveguide Displayed by AR
An optical waveguide and waveguide technology, which is applied in the field of diffractive optical waveguides, can solve the problems of uneven image color, the optical waveguide system cannot achieve two-dimensional pupil dilation, and the volume is large, and achieves the effect of improving the overall efficiency and making up for the problem of image uniformity.
Active Publication Date: 2021-07-30
SHENZHEN OPTIARK SEMICON TECH LTD
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Problems solved by technology
[0004] However, the existing optical waveguide system has the following problems: 1. The optical efficiency of the optical waveguide system is low; 2. Some optical waveguide systems reduce the brightness uniformity of the image when the eyebox is enlarged, resulting in uneven color of the image; 3. Some The optical waveguide system cannot achieve two-dimensional pupil expansion, and the volume is large
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[0024] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings. It should be noted here that the descriptions of these embodiments are used to help understand the present invention, but are not intended to limit the present invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
[0025] as attached figure 1 As shown: a diffractive optical waveguide for AR display, including a waveguide body 108, the waveguide body 108 is provided with a pupil dilation and exit pupil area 102 for dilating and exiting the light rays containing image information, in the An entrance pupil area 101 is provided near the center of the pupil expansion exit pupil area 102, and the entrance pupil area 101 is embedded in the pupil expansion exit pupil area 102. Specifically, the waveguide body...
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Abstract
The present invention relates to the technical field of optical imaging systems, and in particular to a novel diffractive optical waveguide for AR display, which includes a waveguide body, and the waveguide body is provided with a pupil dilator for dilating and exiting the pupil of light containing image information In the pupil exit area, an entrance pupil area is set above the center of the pupil dilation exit pupil area, and the image information is imported into the pupil dilation exit pupil area through the entrance pupil area. It is used to recycle the upper and lower recycling areas and the left and right recycling areas where light is emitted from the pupil dilating exit pupil area to the surroundings. The optical waveguide can recycle energy to improve the overall efficiency of the optical waveguide, and at the same time, it can greatly compensate for the problem of image uniformity.
Description
technical field [0001] The invention relates to the technical field of optical imaging systems, in particular to a diffractive optical waveguide for AR display. Background technique [0002] Near-eye display technology is one of the key technologies that must be used in current AR glasses. The near-eye display system is generally composed of an image source and an optical transmission system. The image frame emitted by the image source is transmitted to the human eye through the optical transmission system. The optical transmission system here needs to have a certain transmittance, so that the wearer can see the external environment while seeing the image. [0003] For the optical transmission system, there are many solutions in the industry, for example, free-space optics, free-form surface optics, and display optical waveguides. Among them, optical waveguide technology is obviously superior to other optical solutions due to its large eye-moving range and light and thin c...
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IPC IPC(8): G02B27/01
CPCG02B27/0172
Inventor 塔帕尼·卡列沃·利沃拉朱以胜
Owner SHENZHEN OPTIARK SEMICON TECH LTD