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Augmented reality device

An augmented reality and grating technology, applied in optical components, optics, instruments, etc., can solve problems such as low coupling efficiency

Inactive Publication Date: 2020-02-07
HUAWEI TECH CO LTD
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0003] Currently, incoupling gratings in augmented reality devices have low coupling efficiency when coupling light mechanically generated into optical waveguides

Method used

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Embodiment Construction

[0039] In order to make the purpose, technical solution and advantages of the application clearer, the application will be further described in detail below in conjunction with the accompanying drawings. Wherein, in the description of the present application, unless otherwise specified, "plurality" means two or more.

[0040] The present application provides an augmented reality device, which can fuse light carrying a virtual image and light carrying a real image, so as to realize the effect of applying the virtual image in the real world. The augmented reality device may be, for example, AR glasses, or may also be an AR helmet or the like. For ease of description, the augmented reality device is AR glasses as an example. Such as figure 1 As shown, a schematic structural diagram of an example of an augmented reality device (for example, AR glasses) is given. The AR glasses include an optical waveguide lens 10 , an optical engine (also referred to as an optical engine compon...

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Abstract

An augmented reality device comprises an optical machine and an optical waveguide lens. The optical waveguide lens comprises a dielectric layer, a transmission type coupling-in grating, an optical waveguide and a coupling-out grating. The optical machine is used for generating light, and the dielectric layer is arranged on the surface of one side, close to the optical machine, of the transmission-type coupled grating, and is used for transmitting light to the transmission type coupling-in grating, wherein the refractive index of the dielectric layer is greater than that of the transmission type coupling-in grating; the transmission type coupling-in grating is arranged on the surface of the side, close to the optical machine, of the optical waveguide and used for coupling the light passingthrough the dielectric layer into the optical waveguide, and the optical waveguide is used for transmitting the light coupled in by the transmission type coupling-in grating to the coupling-out grating, and the coupling-out grating is used for coupling out the light in the optical waveguide to human eyes for imaging. Since the dielectric layer with the refractive index greater than that of the transmission type coupled grating is added on the surface of the transmission type coupling-in grating, the optical path of the light passing through the transmission type coupling-in grating can be increased; therefore, more light can be coupled into the optical waveguide, and the coupling efficiency of the transmission type coupling-in grating to the light can be improved.

Description

technical field [0001] The present application relates to the technical field of augmented reality, in particular to an augmented reality device. Background technique [0002] Augmented reality (augmented reality, AR) technology is a technology that calculates the position and angle of the image emitted by the optical machine in real time and adds the corresponding image. Interaction means that hard-to-experience physical information (such as visual information, sound, or touch) within the scope of time and space in the real world can be simulated by a computer and then superimposed, and the virtual information can be applied to the real world. At present, augmented reality technology has been widely used in augmented reality devices, such as AR glasses, which can project virtual images into human eyes and realize the superposition of virtual images and real images. [0003] At present, the incoupling grating in the augmented reality device has low coupling efficiency when ...

Claims

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Application Information

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IPC IPC(8): G02B27/01G02B27/42
CPCG02B27/0172G02B27/4205G02B27/4272
Inventor 孙洁高少锐戴杰
Owner HUAWEI TECH CO LTD
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