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Laser holographic digital lens die and manufacturing method thereof

A technology of laser holography and lens molds, which is applied in the field of holographic lenses, can solve the problems of low mold production success rate, complex optical path, and many diffraction elements, and achieve the effect of improving the production success rate and simplifying the process

Inactive Publication Date: 2014-12-31
SUZHOU IMAGE LASER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this prior art, there are technical problems such as complex optical path and many diffractive elements, which cause the holographic lens in the prior art to have specific technical problems such as difficult operation, single pattern shape, and difficulty in making complex shapes, which further lead to successful mold making. low rate

Method used

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  • Laser holographic digital lens die and manufacturing method thereof
  • Laser holographic digital lens die and manufacturing method thereof
  • Laser holographic digital lens die and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Such as figure 2 As shown, the stripes of the same frequency are photolithographic stripes of different spatial angles at each pixel point on the horizontal straight track, and the angles change sequentially, and the angle between the photolithographic stripes between adjacent pixel points is 10° that changes continuously in sequence. In this way, pixel points of photolithographic stripes at different angles are realized. Those skilled in the art can understand that, in specific implementation, different lithography stripe angle changes can be adopted according to actual needs, such as 2 degrees, 5 degrees, 20 degrees, etc., the smaller the lithography stripe angle changes, the more The more the optional number of engraved stripe angles, the more detailed and complex the visual effect.

Embodiment 2

[0029] Such as image 3 As shown, the stripes of the same spatial angle adopt different frequencies of photolithographic stripes for each pixel point on the longitudinal linear trajectory. In the second embodiment, the photolithographic stripes of six different frequencies are used, which are successively reduced, so as to realize different frequency Pixels of photolithographic stripes. The lens texture obtained by using the embodiment is an off-axis convex lens. Those skilled in the art can understand that, in a specific implementation, a plurality of photolithographic stripes with different frequencies, for example, 12, can be used according to actual needs. The more the frequency of the photolithographic stripes, the more detailed and complex the visual effect will be.

Embodiment 3

[0031] Such as Figure 4 As shown, the fringes of the same frequency are photolithographic fringes of different spatial angles at each pixel point on the circular locus, and the angles change sequentially. Using multiple circular trajectories, the frequency change trajectories are scaled with concentric circles, the inner circle has low frequency, and the outer circle has high frequency. The lens texture obtained by using this scheme is a coaxial convex lens.

[0032] other embodiments

[0033] It should be noted that the variation track of spatial angle and frequency in the above embodiment can be designed by those skilled in the art according to needs, for example Figure 5 , the example shown in 6. When the pattern is composed of multi-frequency and multi-angle composite modulation microstructure stripes, the change of angle or frequency is regular at the same time, and those skilled in the art can realize laser holographic digital lens effects with different textures thr...

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Abstract

The invention provides a manufacturing method of a laser holographic digital lens die. The manufacturing method is used for solving the technical problems of complicated light paths and many diffraction components of the prior art. The manufacturing method includes steps of firstly, inputting holographic patterns to a computer; secondly, encoding the holographic patterns into combination of photoetching stripes by the computer according to simulation optical encoding rules; thirdly, transmitting the combination of photoetching stripes to a dot matrix photoetching machine by the computer; fourthly, outputting the combination of photoetching stripes by the dot matrix photoetching machine to form a laser holographic digital lens die, wherein the photoetching stripes are combined modulated microstructure stripes of different frequencies and angles. The laser holographic digital lens die in the embodiment has the advantages that the process is simplified, and die manufacturing success rate is increased.

Description

technical field [0001] The invention relates to a holographic imaging technology, in particular to a holographic lens. Background technique [0002] Holographic lens imaging technology can be used to produce laser-decorated anti-counterfeiting films, which can then be used for high-end packaging box shading, high-end tobacco and wine positioning decoration, etc., to increase the aesthetics of product packaging and provide product anti-counterfeiting features. [0003] Most of the holographic lenses in the prior art are formed by arranging a plurality of specially designed optical diffraction elements to interfere with two different optical surface waves. In this prior art, there are technical problems such as complex optical path and many diffractive elements, which cause the holographic lens in the prior art to have specific technical problems such as difficult operation, single pattern shape, and difficulty in making complex shapes, which further lead to successful mold ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/32G03H1/04
Inventor 桑建新龚春燕凡海波
Owner SUZHOU IMAGE LASER TECH
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