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Optical device, optical system, display device, display equipment, and display system

An optical device and display device technology, applied in optics, optical components, instruments, etc., can solve the problems of large occupancy, heavy weight, reduced ease of use, etc., and achieve the effect of compact optical path structure, low cost, small size and light weight

Pending Publication Date: 2022-01-14
PIMAX TECH SHANGHAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing technology, it is necessary to use a lens group composed of many lenses to collimate the image light. The structure of the lens group is generally relatively complicated, occupying a large volume and heavy weight, which will improve the performance of the entire virtual reality / augmented reality display device. Size and weight reduce ease of use

Method used

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  • Optical device, optical system, display device, display equipment, and display system
  • Optical device, optical system, display device, display equipment, and display system
  • Optical device, optical system, display device, display equipment, and display system

Examples

Experimental program
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Effect test

no. 1 example

[0032] figure 1 Shown is a schematic structural diagram of a near-eye display optical device provided by the first embodiment of the present invention. figure 1 The straight lines with arrows in the middle indicate the general direction of the light path.

[0033] The invention provides a near-eye display optical device, such as figure 1 As shown, it includes an image source 1 , a first mirror 21 , a second mirror 22 and a light guiding mechanism 3 . The image source 1 emits image light. The first reflector 21 is located in the light emitting direction of the image source 1, and the second reflector 22 is located in the reflective direction of the first reflector 21. The first reflector 21 and the second reflector 22 are jointly configured to: shape the image light into Collimate the image light. The light guide mechanism 3 is installed on the light emitting direction of the second reflector 22, and the light guide mechanism 3 is configured to: couple the collimated image ...

no. 2 example

[0043] figure 2 Shown is a schematic structural diagram of a near-eye display optical device provided by the second embodiment of the present invention. figure 2 The straight lines with arrows in the middle indicate the general direction of the light path. The difference between the embodiment and the first embodiment is: as figure 2 As shown, one side of the first reflecting mirror 21 is in contact with one side of the second reflecting mirror 22 . Other structures and designs of this embodiment can adopt the same structure and design as that of the first embodiment.

[0044] When in use, since one side of the first reflector 21 is in contact with one side of the second reflector 22, the total volume occupied by one side of the first reflector 21 and the second reflector 22 can be smaller, and the first reflector 21 The folded optical path formed by the second reflecting mirror 22 is more compact. The angle between the normal at the geometric center of the first reflec...

no. 3 example

[0046] image 3 Shown is a schematic structural diagram of a near-eye display optical device provided in the first embodiment of the present invention with a transmission surface. Figure 4 Shown is a schematic structural diagram of a near-eye display optical device provided in the second embodiment of the present invention with a transmission surface. image 3 and Figure 4 The straight line with the arrow in the middle indicates the approximate propagation direction of the light path. Such as image 3 and Figure 4 As shown, the near-eye display optical device further includes a first transmission surface 23 , and the first transmission surface 23 is arranged on the optical path between the image source 1 and the first reflection mirror 21 .

[0047] In use, the first transmission surface 23 refracts the image light emitted by the image source 1 , thereby changing the optical path of the image light emitted by the image source 1 . Through the first transmission surface ...

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Abstract

The invention relates to the field of virtual reality / augmented reality display, and provides an optical device, an optical system, a display device, display equipment and a display system. The optical device comprises an image source, a first reflector, a second reflector and a light guide mechanism, and the first reflector and the second reflector are jointly constructed to shape image light into collimated image light; and the light guide mechanism is configured to optically couple the collimated image into the light guide mechanism for propagation, and optically couple the collimated image propagated in the light guide mechanism out. When in use, the image source emits image light for display, the first reflector and the second reflector shape the image light into collimated image light, then the collimated image light is coupled into the light guide mechanism for propagation, and then the light guide mechanism couples the collimated image light out for viewing. Only the first reflector and the second reflector are adopted to achieve collimation, the overall light path structure is more compact, the overall size is small and light, and the cost is low.

Description

technical field [0001] The invention relates to the field of virtual reality / augmented reality display, in particular to an optical device, an optical system, a display device, a display device and a display system. Background technique [0002] At present, one of the most widely used solutions for virtual reality / augmented reality display devices is the geometric light waveguide architecture. The optical module of this solution includes: microdisplay, eyepiece group, and light waveguide. The interior of the light waveguide is set as an array with the same angle The reflective surface is coated with a dielectric film layer. The microdisplay is arranged at the front end of the eyepiece group for emitting light, and the eyepiece group is located at the coupling end of the optical waveguide for shaping the image light emitted by the display into parallel light and then coupling it into the optical waveguide. The light propagates through total reflection in the optical waveguid...

Claims

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Application Information

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IPC IPC(8): G02B27/01
CPCG02B27/0172G02B27/0176
Inventor 翁志彬来颖
Owner PIMAX TECH SHANGHAI CO LTD
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