Near-eye display device and projection feedback method

A near-eye display and projection image technology, applied in optical components, optics, instruments, etc., can solve the problems of fiber scanner movement trajectory and state deviating from ideal mode, projection quality degradation, difficult to stably drive signal to scan light, etc., to solve the problem of projection The effect of degraded quality and simple structure

Active Publication Date: 2019-12-20
CHENGDU IDEALSEE TECH
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  • Abstract
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  • Claims
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Problems solved by technology

[0003] As an image source, fiber optic scanners are easily affected by environmental factors such as temperature, humidity, vibration, driving fluctuations, and aging fatigue. , so that projection quality degradation occurs during long hours of work

Method used

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  • Near-eye display device and projection feedback method
  • Near-eye display device and projection feedback method
  • Near-eye display device and projection feedback method

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Embodiment Construction

[0053] 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, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0054] Please refer to Figure 1A and Figure 1B , Figure 1A and Figure 1B It is a schematic diagram of an optical fiber scanning imaging system provided by an embodiment of the present invention. The optical fiber scanning imaging system mainly includes: a processor, a scanning driving circuit, a light source module, a light source modulation module, a fiber optic scanner 11 , a light source combining module 12 and an optical fiber 13 . The working principle o...

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Abstract

The invention discloses a near-eye display device and a projection feedback method. The device comprises an image light source and a feedback light source; a light scanning device for scanning and emitting display image light and feedback image light; a light waveguide; an image collection unit for collecting the feedback image light penetrating through the light waveguide, and generating a collection image corresponding to a feedback image; a readable storage medium on which a program is stored, wherein the program is used for realizing the following steps when being executed by a processor:comparing characteristics of a preset object in the collection image with the characteristics of the preset object in a standard projection image, acquiring a comparison result, and adjusting a driving signal of the light scanning device based on the comparison result. The above scheme is used for monitoring movement trajectory of the optical fiber in an optical fiber scanning imaging system, andthen a feedback signal can be provided for compensation control according to the movement trajectory of the optical fiber, thereby solving the technical problem that the projection quality is degraded.

Description

technical field [0001] The invention relates to the field of near-eye display, in particular to a near-eye display device and a projection feedback method. Background technique [0002] The imaging principle of fiber scanning display technology (fiber scanning display, FSD) is to drive the scanning fiber through the fiber scanner to move the predetermined two-dimensional scanning trajectory, and modulate the light output of the light source, that is, to modulate the image corresponding to each pixel of the image to be displayed. Then, the light corresponding to each pixel of the image to be displayed is projected onto the projection surface one by one through the scanning optical fiber, thereby forming a projection picture. [0003] As an image source, fiber optic scanners are easily affected by environmental factors such as temperature, humidity, vibration, driving fluctuations, and aging fatigue. , so that projection quality degradation occurs during long hours of work. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/01G02B26/10
CPCG02B26/103G02B26/106G02B27/0101
Inventor 宋海涛其他发明人请求不公开姓名
Owner CHENGDU IDEALSEE TECH
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