Prism coupling type wedge-shaped plane waveguide optical device

An optical device and planar waveguide technology, which is applied in the field of planar waveguide optical devices, can solve problems such as coupling mode, weight and volume defects of optical imaging systems, achieve large field of view and high coupling efficiency of light waves, improve coupling efficiency, and reduce weight Effect

Active Publication Date: 2015-04-22
上海理湃光晶技术有限公司
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  • Abstract
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Problems solved by technology

[0003] In order to solve the defects of the traditional wearable display optical system due to the coupling mode, weight and volu

Method used

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  • Prism coupling type wedge-shaped plane waveguide optical device
  • Prism coupling type wedge-shaped plane waveguide optical device
  • Prism coupling type wedge-shaped plane waveguide optical device

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Example Embodiment

[0034] The working steps and example applications of the planar waveguide optical device of the present invention are as follows:

[0035] figure 2 It is a schematic diagram of the wedge-shaped planar substrate of the prism-coupled wedge-shaped planar waveguide optical device of the present invention. In order to ensure that the light wave can be transmitted by the total reflection in the substrate and can be coupled out of the substrate at a specific position, it is necessary to destroy the condition of total reflection at the coupling out position. The coupling output of the present invention is composed of a wedge component 20. When the light wave propagates in the substrate, the angle between the light and the substrate surface normal is greater than the critical angle of total reflection. Due to the existence of the wedge-shaped component, when the light reaches the wedge-shaped component, its incident angle is less than the critical angle of total reflection, which destroy...

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Abstract

The invention provides a prism coupling type wedge-shaped plane waveguide optical device which comprises a display light source, a collimating lens, a coupling prism, a planar wedge-shaped substrate and a prism positioning component, wherein the display light source is used for emitting display optical waves for displaying the needed image; the collimating lens is used for collimating the optical waves emitted by the light source; the coupling prism is used for coupling the collimated optical waves into a planar waveguide substrate; the planar wedge-shaped substrate is used for performing total reflection propagation on the coupled optical waves, and the light rays are coupled to an output substrate by utilizing a wedge-shaped structure; and the prism positioning component is used for adjusting the space distribution of optical fibers. The prism coupling type wedge-shaped plane waveguide optical device disclosed by the invention has the characteristics of simple manufacturing process, compact and flexible structure, large view field and high optical wave coupling efficiency, can be used for wearable display and also can be applied to the fields of expanded illumination, automobile navigation display and mobile phone display.

Description

technical field [0001] The invention relates to a planar waveguide optical device, in particular to a prism-coupled wedge-shaped planar waveguide optical device suitable for wearable displays. Background technique [0002] At present, for some wearable display devices, the core part of information display is composed of optical elements. The display system uses optical components to virtually display the image information at a certain distance in front of the human eye, so that the observer can observe the changes of the surrounding scenery while browsing the image information. Usually, the core optical components of this type of display system are mainly composed of three parts: light wave coupling input components, light wave transmission substrates, and light wave coupling output display components. Therefore, light and compact structure, large field of view and high-resolution image display have always been the goals pursued by this type of optical system. Among them...

Claims

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Application Information

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IPC IPC(8): G02B27/01G02B6/34
CPCG02B6/0036G02B6/34G02B27/0172
Inventor 张圣军张庆
Owner 上海理湃光晶技术有限公司
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