Planar waveguide binocular optical display device with saw-toothed sandwich structure

Abstract

The invention provides a planar waveguide binocular optical display device with a saw-toothed sandwich structure. The planar waveguide binocular optical display device comprises an image display light source, a collimating lens group, a coupling input surface, a planar waveguide substrate, a saw-toothed groove structure and a one-half light-split structure, wherein the image display light source is used for emitting display light waves for displaying a required image; a collimating lens is used for collimating the light waves of the light source; the coupling input surface is used for coupling the collimated light waves into a planar waveguide; the planar waveguide substrate is used for carrying out total reflection diffusion on the coupled light waves; the saw-toothed groove structure is used for expanding a view field and outputting the coupled light waves to the substrate; and the one-half light-split structure is used for uniformly distributing rays and improving the brightness uniformity of the image. The planar waveguide binocular optical display device has the characteristics of uniform image brightness, light and thin structure, easily-expanded view field angle, simple processing technology and low cost, not only can be used for wearable display, but also can be used for field real-time training simulation, naked-eye 3D display, searching and locating, fact display and the like.

Description

technical field [0001] The invention relates to a planar waveguide optical display device, in particular to a planar waveguide binocular optical display device with a sawtooth sandwich structure that can be used for full-eye wearable penetrating display. Background technique [0002] For head-mounted display optical systems, in order to reflect the effect of augmented reality, optical components are usually used to virtually display image information at a certain distance in front of the human eye, so that the wearer can observe the surrounding scenery while browsing the information. change so as not to affect normal behavior. For this reason, the wearable display optical system of augmented reality, in order to enable the wearer to obtain all the information from the display light source in time, usually requires the display system to have the characteristics of large field of view, light and thin structure, and uniform image brightness within the field of view. The tradit...

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Problems solved by technology

[0004] In order to solve a series of problems caused by the uneven brightness of the displayed image, small field of view and complex manufacturing process in the traditional wearable display optical system, the present invention designs a planar waveguide binocular optical display device with a sawtooth sandwich structure

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