Cylinder type hologram manufacture method, manufacture device and manufactured hologram

Abstract

The invention discloses a making method for a cylindrical hologram, a making device and a made hologram thereby. The making method comprises following steps: encoding each line information after dividing a plurality of digital images with different visual angles into a plurality of line information; reading the encoded line information by a projection system, condensing the read line information by laser permeating the projection system at a corresponding point of the holographic recording material; recording each line information of each gram spot by spot until a unit hologram is recorded; recording each unit hologram row by row until unit holograms of all view angles are all recorded on the corresponding holographic recording material. The invented method divides and encodes an image into a plurality of line information, records the line information spot by spot on the holographic recording material disposed on the focus of the imaging lens, and the line information is packed recorded by an imaging lens, so that the radius of the final cylindrical hologram is adjusted by adjusting the object distance.

Description

technical field [0001] The present invention relates to the technical field of hologram, and more specifically, relates to a method for making a cylindrical hologram, a making device and the prepared hologram. Background technique [0002] Since its invention, holography has been an ideal tool for people to support their dreams of three-dimensional display. The breakthrough of recording materials, the birth of digital holography, and the emergence of various low-cost and high-quality laser light sources indicate that people's dreams and efforts for nearly half a century are rapidly becoming reality. Display holography is gradually entering people's daily life from the palace of science and art, challenging people's basic understanding of existing information technology to the greatest extent. The object of future information technology is not just ordinary two-dimensional plane information processing, but the collection, encoding, transmission, demodulation and display of i...

AI Technical Summary

Problems solved by technology

Therefore, for a recording system with a fixed radius of curvature, only cylindrical holograms with the same radius can be produced. That is to say, for cylinders with different radii, a corresponding cylindrical lens 61 is required. This greatly limits the scope of application of the method

In addition, due to the complexity of this recording optical system, after the laser passes through the optical system, the energy of the laser is wasted a lot, and the laser energy falling on the holographic recording material is reduced; The laser distribution is relatively scattered and not concentrated enough, which not only requires high laser power, but also can be better realized only on expensive and high-sensitivity holographic recording materials, such as the oldest and commonly used recording medium-silver salt, Its photosensitive sensitivity is very high, but it is difficult to control, the cost is high, and it is not easy to mass produce, which makes it difficult for the traditional cylindrical hologram to be widely used

It is very difficult to realize on low photosensitivity materials such as photoresist (such as photoresist plate, whose photosensitivity is two orders of magnitude lower than that of silver salt), so no holographic products with similar effects have been seen so far.

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