Volume holographic element and manufacturing method thereof and manufacturing system thereof

Abstract

The present invention discloses a volume holographic element. The volume holographic element comprises at least one pixelate information layer and at least one substrate layer, the information layer is arranged on the substrate layer, or the information layer is arranged between two adjacent substrate layers; and from the profile of the volume holographic element, the information layer has a pixelate stripe surface with array distribution, each stripe surface in each pixel has the periodicity, and there is an included angle between each stripe surface and the substrate plane, and each pixel is a reflection Prague volume grating. The present invention further discloses a pixelate reflector holographic element manufacturing method and system. The volume holographic element and manufacturing method thereof and manufacturing system thereof perform interference light beam, perform pixelate joint exposure on the photosensitive layer of the volume holographic recording materials, and perform subsequent chemical or physical processing to form a pixelate reflector holographic optical element with complex optical parameters.

Description

Technical field [0001] The invention relates to a volume holographic element, in particular to a pixelated reflector holographic element and a manufacturing method and a manufacturing system thereof. Background technique [0002] Holography (Holography) is a professional technology for realizing light field recording and reproduction. According to the difference of holographic materials, it is divided into plane holography and volume holography. [0003] In the past 20-30 years, the planar holography technology has realized a wide range of commercial applications in the fields of spectroscopy gratings and molded holography, and has successfully realized digital preparation, which has greatly promoted the application range of this technology. [0004] Volume holography technology can be divided into two directions, one is three-dimensional volume holography technology, and the other is volume holographic optical elements. [0005] Three-dimensional volume holography technology: It can ...

AI Technical Summary

Problems solved by technology

[0005] Three-dimensional volume holography technology: it can realize realistic three-dimensional display. The American Zebra company invented the digital preparation technology, but due to the limitations of the practical application of three-dimensional holograms (viewing value), this technology has not been promoted and applied on a large scale

However, the reliability of this method is poor, resulting in low production yield, and the flexibility of parameters such as short focus and multi focus is also limited, so the ability to expand to more innovative applications is not strong

[0015] Invention patents US20090304331, US7792003B2, and CN102652384A describe methods for making volume holographic gratings, but they are all methods for specific devices, and these methods are not universal

[0020] 1) Limited by the power of the light source and the caliber of the optical system, the format cannot be enlarged, generally below 200mm;

[0021] 2) Optical platform interference production requires long exposure, insufficient stability, and low yield;

[0022] 3) It is difficult to control the parameters of holographic optical elements due to the limitation of optical device size, focal length and other parameters in the optical path;

[0023] 4) The components of the traditional optical path are fixed, and the holographic recording process is not easy to change, so it is more difficult to prepare special holographic optical components such as short focal length, multi-focus, gradual focal length, and multi-wavelength

[0024] The above problems limit the application of volume holographic elements, making their superiority not fully exerted

Images