Volume holographic exposure system and design method of optical power regulation assembly

By using a diffraction grating to independently control the optical power of the red, green, and blue bands in a volume holographic exposure system, the problem of not being able to control the optical power of different wavelengths individually in existing technologies has been solved, thus improving the display effect of color volume holographic waveguides.

CN120949371BActive Publication Date: 2026-07-10ZHEJIANG CRYSTAL OPTECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHEJIANG CRYSTAL OPTECH
Filing Date
2025-09-24
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Existing technology cannot control the light power of different wavelengths individually, which affects the display effect of color volume holographic waveguides.

Method used

The method employs a substrate, a first light source assembly, a second light source assembly, a first optical power control assembly, and a second optical power control assembly. It utilizes a diffraction grating to independently control the red, green, and blue wavelengths of light, thereby controlling the diffraction efficiency distribution of the volume holographic grating.

Benefits of technology

It enables precise control of optical power at different wavelengths, thereby improving the display effect of volume holographic waveguides.

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Abstract

The application provides a volume holographic exposure system and a design method of a light power regulation assembly, and relates to the technical field of optics.The volume holographic exposure system comprises a substrate, a first light source assembly, a second light source assembly, a first light power regulation assembly and a second light power regulation assembly; the substrate has a first surface and a second surface, the first surface is used for coating a volume holographic material, the first light source assembly is used for emitting first collimated light to the volume holographic material, and the second light source assembly is used for emitting second collimated light to the volume holographic material; the first light power regulation assembly comprises three first diffraction gratings arranged along a first optical axis in sequence, and the three first diffraction gratings are used for diffracting three kinds of primary color light in the first collimated light in sequence; and the second light power regulation assembly comprises three second diffraction gratings arranged along a second optical axis in sequence, and the three second diffraction gratings are used for diffracting three kinds of primary color light in the second collimated light in sequence.The volume holographic exposure system can control the light power of different wavelengths separately.
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Citation Information

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