Optical transmission system, preparation method thereof and display device

Abstract

The invention provides an optical transmission system, a preparation method thereof and a display device. The optical transmission system is used for transmitting incident light, the incident light comprises image light and zero-order light, the optical transmission system comprises an optical waveguide, and a coupling-in grating and a coupling-out grating which are arranged on the surface of the optical waveguide; wherein the coupling-in grating is used for coupling incident light into the optical waveguide and converging the incident light; the optical waveguide is used for enabling incident light coupled into the optical waveguide to generate total reflection; and the coupling-out grating comprises a diffraction area and an isolation area, the diffraction area is used for coupling the image light in the optical waveguide out of the optical waveguide, and the isolation area is used for enabling the zero-order light in the optical waveguide to continue to be totally reflected, so that the zero-order light is emitted out of the optical transmission system at an angle outside the field angle of the optical transmission system. According to the invention, zero-order-eliminating image reproduction can be realized, and compared with the prior art, the display effect is better, the size and weight of the system are greatly reduced, and the system is lighter and is suitable for head-mounted display.

Description

technical field [0001] The present disclosure relates to the field of optical technology, in particular to an optical transmission system, a manufacturing method thereof, and a display device. Background technique [0002] With the improvement of computer performance and the development of optoelectronic devices, spatial light modulators (Spatial Light Modulator, SLM) can modulate the amplitude, phase, frequency, etc. of light waves, and are widely used in optical measurement, pattern recognition, fringe projection, holography and dynamic In display, the advantages of SLM-based computational holographic display are becoming more and more prominent. [0003] In computational holographic display, loading digital lens on SLM not only simplifies the reproduction system, but also can control the reproduction position. However, the superposition of the zero-order facula produced by the digital lens and the reconstructed image will seriously affect the quality of the reconstructed...

AI Technical Summary

Problems solved by technology

However, the superimposition of the zero-order facula produced by the digital lens and the reproduced image will seriously affect the quality of the reproduced image

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