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Optical waveguide

A technology of optical waveguide and optical waveguide sheet, applied in the field of optical waveguide, can solve problems such as difficult to realize real-time detection and affect imaging quality, and achieve the effects of ensuring imaging quality, coupling efficiency, and coupling efficiency

Pending Publication Date: 2020-10-30
舜宇奥来半导体光电(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide an optical waveguide to solve the problem that the optical waveguide in the prior art is difficult to realize real-time detection and affects the imaging quality

Method used

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Effect test

Embodiment 1

[0035] Such as figure 1 In the specific embodiment shown, the detector 20 is spaced apart from the optical waveguide sheet 10, and the optical waveguide further includes a plurality of slit gratings 14, and the slit gratings 14 are arranged on the optical waveguide sheet 10, and the slit gratings 14 and the detector 20 In one-to-one correspondence, the slit grating 14 is located in the light incident direction of the detector 20 . The slit grating 14 is arranged on the optical waveguide sheet 10, and the slit grating 14 is arranged in one-to-one correspondence with the detectors 20, and the slit grating 14 is located in the light incident direction of the detector 20, so that there is no outcoupling in the turning grating 12. Most of the light in the grating 13 and the light not used for imaging out of the grating 13 can enter the slit grating 14 and be coupled out from the slit grating 14 to the one-to-one corresponding detectors 20, which is convenient for the detector 20 to...

Embodiment 2

[0044] The difference from Embodiment 1 is that the position of the detector 20 is different.

[0045] exist figure 2 In the specific embodiment shown, the slit grating 14 is not arranged on the optical waveguide 10 , and the detector 20 is arranged on the optical waveguide 10 . This setting makes the optical waveguide 10 and the detector 20 integrally formed, which facilitates the real-time detection of the light not used for imaging in the optical waveguide 10 by the detector 20, reduces the volume of the optical waveguide, and ensures the miniaturization of the optical waveguide. .

[0046] Such as figure 2 As shown, a plurality of detectors 20 are arranged on the same side surface of the optical waveguide plate 10 . When at least a part of the in-coupling grating 11, the inflection grating 12 and the out-coupling grating 13 are on the same surface, and multiple detectors 20 are arranged on the same side surface of the optical waveguide sheet 10, multiple detectors 20 ...

Embodiment 3

[0048] The difference from the second embodiment is that the position of the detector 20 is different.

[0049] exist image 3 In the specific embodiment shown, at least two detectors 20 are arranged on different surfaces of the optical waveguide sheet 10 . The two detectors 20 are arranged on different surfaces of the optical waveguide sheet 10, so that the two detectors 20 receive light from different positions.

[0050] exist image 3 In the specific embodiment shown, at least a part of the coupling-in grating 11, the inflection grating 12 and the out-coupling grating 13 are on the same surface, and the two detectors 20 are respectively located on the same surface as the in-coupling grating 11, the inflection grating 12 and the out-coupling grating. 13 on both sides of the plane. exist image 3 In the specific embodiment shown, the optical waveguide 10 is a cuboid, the plane where the coupling-in grating 11, the turning grating 12 and the coupling-out grating 13 are loc...

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Abstract

The invention provides an optical waveguide. The optical waveguide comprises an optical waveguide sheet, a coupling-in optical grating, a turning optical grating, a coupling-out optical grating and detectors. The coupling-in optical grating is used for coupling light emitted by an external image source into the optical waveguide sheet; the turning optical grating is used for receiving the light coupled into the optical grating, and the turning optical grating is located on one side of the coupled-in optical grating; the coupling-out optical grating is used for receiving light of the turning optical grating, the coupling-out optical grating is located on one side of the turning optical grating, the connecting line of the center of the coupling-in optical grating and the center of the turning optical grating is perpendicular to the connecting line of the center of the coupling-out optical grating and the center of the turning optical grating, and the coupling-out optical grating couplesthe light out of the optical waveguide sheet; and at least one detector is located on the side, far away from the coupling-in optical grating, of the turning optical grating and is used for receivinglight which does not enter the coupling-out optical grating in the turning optical grating, and at least another detector is located on the side, far away from the turning optical grating, of the coupling-out optical grating and is used for receiving light which is not used for imaging in the coupling-out optical grating. According to the invention, the problem that the optical waveguide in the prior art can hardly realize real-time detection and the imaging quality is influenced is solved.

Description

technical field [0001] The present invention relates to the technical field of diffractive optical equipment, in particular to an optical waveguide. Background technique [0002] With the continuous innovation of future technology, virtual reality (VR), augmented reality (AR), and mixed reality (MR) have gradually entered industries such as industrial education, among which optical waveguide technology is an indispensable step in AR augmented reality. However, there is currently no technology that can detect light problems in the optical waveguide in real time. It cannot simultaneously detect the problem of overflow light in the optical waveguide when it is coupled out, and it cannot be fed back to the original port for optical compensation in time. It is difficult to guarantee the imaging quality. [0003] That is to say, the optical waveguide in the prior art has the problem that it is difficult to realize real-time detection and affects the imaging quality. Contents of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/124G01M11/02G01J1/42
CPCG01J1/4228G01M11/02G02B6/124
Inventor 高一峰熊羚鹤汪杰孙理斌陈远
Owner 舜宇奥来半导体光电(上海)有限公司
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