Method and system for generating high-resolution stereogram-type micropatterning hologram pattern for nanoimprint

Abstract

Provided are a method and a system for generating a high-resolution stereogram-type micropatterning hologram pattern for nanoimprint. The method for generating a hologram pattern, according to an embodiment of the present invention, divides a hologram image for each hogel into a plurality of hologram images for each sub-hogel, calculates hologram patterns for each divided hologram image for each sub-hogel, and generates a hologram pattern for each hogel from the calculated hologram patterns of the sub-hogels. Accordingly, there is no issue in transmitting information as the number of files does not increase significantly even when the resolution of 3D content that can be displayed through a hologram is increased using a hologram pattern.

Description

Method and system for generating high-resolution stereogram-based micropatterning holographic patterns for nanoimprinting

[0001] The present invention relates to holographic pattern generation, and more particularly, to a method and system for generating a high-resolution stereogram-type fine patterning holographic pattern for nanoimprinting.

[0002] Creating holographic patterns on large-area nanoimprints at the hundreds of nanometer scale requires an ultra-high-resolution source, and ultra-high-performance computing power is also needed to calculate the desired information. To address these challenges, a method is proposed, as illustrated in Figure 1, that calculates holographic patterns at the hogel level and then records them in a tiling manner, similar to the principle of a stereogram hologram printer.

[0003] However, in the stereogram method, the number of hosels becomes the resolution of the entire result, and due to the limited resolution, when expressing 3D information, there are problems in which the resolution decreases according to depth. For example, the current hosel size is approximately 0.5mm, and at the level of 10cm*10cm, the resolution is 200*200, and the number of hosels is about 40,000. However, if the size of the hosel is reduced and the number is increased, the information increases exponentially, and the speed delay in transmitting the data becomes an issue.

[0004] The present invention has been devised to solve the above problems, and the purpose of the present invention is to provide a method and system for generating a high-resolution stereogram-type micro-patterning hologram pattern without problems in information transmission even when the resolution of three-dimensional content that can be displayed through a hologram using nanoimprint technology is increased.

[0005] A method for generating a hologram pattern according to an embodiment of the present invention for achieving the above object includes the steps of: dividing a hologram image for each hogel into a plurality of hologram images for each sub-hogel; calculating a hologram pattern for each of the divided sub-hogel hologram images; and generating a hologram pattern for each hogel from the calculated hologram patterns of the sub-hogels.

[0006] The generation step may be to generate a hologram pattern of a hogel by tiling the calculated sub-hogel star hologram patterns.

[0007] Sub-hogels may be hogels that are divided into grids.

[0008] The method for generating a hologram pattern according to the present invention may further include a step of configuring a hologram pattern of a hologram image using the hologram patterns of the hogel when all hologram patterns of the hogel are generated.

[0009] The method for generating a hologram pattern according to the present invention further includes a step of rendering a hologram image for each hogel; and the dividing step may be dividing the rendered hogel-specific hologram image into sub-hogel-specific hologram images.

[0010] The generation step may be to generate the hologram pattern as one file per hogel.

[0011] The number of sub-hogels may be less than the number of hogels.

[0012] The holographic pattern of the holographic image can be transmitted to the printer as a file unit.

[0013] The method for generating a hologram pattern according to the present invention may further include a step of recording the hologram pattern on a hologram film in units of hogels.

[0014] According to another aspect of the present invention, a hologram pattern generation system is provided, comprising: a processor for dividing a hologram image of a hogel into a plurality of hologram images of sub-hogels, calculating a hologram pattern for each of the divided sub-hogels, and generating a hologram pattern of a hogel from the hologram patterns of the calculated sub-hogels; and a storage unit for providing storage space required by the processor.

[0015] According to another aspect of the present invention, a method for generating a hologram pattern is provided, comprising: a step of rendering a hologram image for each hogel; a step of calculating a hologram pattern for each sub-hogel hologram image; and a step of generating a hologram pattern of a hogel from the calculated hologram patterns of the sub-hogels.

[0016] According to another aspect of the present invention, a hologram pattern generation system is provided, comprising: a processor for rendering a hologram image for each hogel, calculating a hologram pattern for each sub-hogel hologram image unit, and generating a hologram pattern for each hogel from the calculated hologram patterns of the sub-hogels; and a storage unit for providing storage space required by the processor.

[0017] As described above, according to embodiments of the present invention, even though the resolution of three-dimensional content that can be displayed through a hologram is increased by a high-resolution stereogram method micro-patterning hologram pattern for nanoimprinting, the number of files does not increase significantly, so there is no problem in transmitting information.

[0018] Additionally, holograms using nanoimprinting technology have significance as a new media space through convergence with the field of art content media, and the hologram patterns used in them can help revitalize the hologram industry by displaying more efficient and high-resolution content.

[0019] Fig. 1. Stereogram method micro-patterning holographic pattern generation

[0020] Figure 2. Generation of a holographic pattern pattern using a sub-hogel method within a hogel.

[0021] Figure 3. A method for generating a high-resolution stereogram-type micro-hologram pattern for nanoimprinting according to one embodiment of the present invention.

[0022] Fig. 4. Hologram production system according to another embodiment of the present invention.

[0023] Fig. 5. Hologram pattern generation system shown in Fig. 4

[0024] Hereinafter, the present invention will be described in more detail with reference to the drawings.

[0025] In an embodiment of the present invention, a technique is proposed to solve the difficulty of calculating an ultra-high-resolution hologram pattern at once when generating a fine hologram pattern required for printing a high-resolution hologram using nanoimprinting technology.

[0026] It generates data in the form of a stereogram composed of hogel units of a certain size, and displays the rendered image in charge of each hogel through diffraction by a holographic pattern as if it were at an infinite distance. In this way, a hologram nanoimprinted in the form of a stereogram can be said to display a three-dimensional image in the form of a light field.

[0027] At this time, the number of hogels determines the spatial resolution of the light field image, and the resolution of the hogels determines each resolution of the light field image. Therefore, if each resolution can be determined so that two or more viewpoints can be provided to the viewer's pupil according to the size of the result to be displayed and the viewing distance of the holographic image, and the size of the hogels can be minimized accordingly, the spatial resolution of the final light field image can be maximized.

[0028] For example, if the precision of nanoimprinting technology is 0.5 micrometers, the diffraction angle is about 50 degrees, and only about 100 viewpoints are provided, which can provide about 2 viewpoints per degree, and at this time, the size of the hosel is about 50 micrometers, so it is possible to have a hosel size similar to the pixel spacing of monitors or mobile phone LCDs that we see on the market.

[0029] However, calculating the hologram pattern after image rendering for each hogel in this way generates 4 million files, or 2,000*2,000 files based on 10cm*10cm. This causes many inefficiencies in transmitting or transferring data to a hologram printer.

[0030] Accordingly, in an embodiment of the present invention, a hogel is divided into a plurality of sub-hogels, and the size of the sub-hogels is reduced to a level of tens of microns, thereby improving the resolution of the overall result, while efficiently transmitting data by generating a file for the hologram pattern in units of hogels. That is, in an embodiment of the present invention, considering the number of files, a method is proposed in which a single hologram pattern has a resolution of approximately 2000*2000, similar to the resolution of a general monitor, while reducing the resolution of the hogel to approximately 100*100.

[0031] To apply the stereogram method, each hogel must have a specific field of view. Nanoimprinting technology can form a field of view for each hogel through light diffraction at intervals of 500 nanometers. Therefore, if the hogel resolution is set to the level suggested above according to the diffraction angle determined by the precision of nanoimprinting, it can be created as a 20*20 tiled image after rendering.

[0032] A file rendered in this way will have a number of files similar to the number of existing hogels. To this end, as shown in Fig. 2, a hologram image is rendered to calculate a hologram pattern, then the hogel is extracted into sub-hogel units, Fourier propagated to calculate the hologram pattern, and then tiled again to create wavefront data capable of representing a total of 400 hogels.

[0033] By creating full imprint wavefront data in this way, it is expected that it will be possible to produce more efficient and realistic results with limited computing power while maintaining a level of cognitive performance similar to that of a single wavefront.

[0034] FIG. 3 is a diagram showing the flow of a method for generating a high-resolution stereogram-type micro-hologram pattern for nanoimprinting according to one embodiment of the present invention.

[0035] For a fine hologram pattern, as shown, a hologram image is first rendered for each hogel (S110), and the hogel-specific hologram image rendered in step S110 is divided into a plurality of sub-hogel-specific hologram images (S120).

[0036] In the next step S120, a hologram pattern is calculated for each hologram image unit of the divided sub-hogels (S130), and the hologram patterns of the sub-hogels calculated in step S130 are tiled to create a hologram pattern of the hogel (S140).

[0037] In step S140, a hologram pattern is generated as a single file for each hogel. Meanwhile, as depicted in Figure 2, sub-hogels are elements that divide the hogel into grids. While there is no limit to the number of sub-hogels, it is recommended to implement them to be smaller than the number of hogels that make up the hologram.

[0038] When steps S110 to S140 are completed for all hogels (S150-Y), the hologram patterns of the hogels are configured as hologram pattern information of the hologram image (S160). The configured hologram pattern information is utilized for hologram printing.

[0039] FIG. 4 is a diagram illustrating the configuration of a hologram production system according to another embodiment of the present invention. As illustrated, the hologram production system according to the embodiment of the present invention is configured to include a hologram pattern generation system (200) and a hologram printer (300).

[0040] The hologram pattern generation system (200) generates a hologram pattern from a source image, and the hologram printer (300) records the hologram pattern generated by the hologram pattern generation system (200) on a hologram film in hogel units. The hologram pattern is transmitted from the hologram pattern generation system (200) to the hologram printer (300) in hogel units (file units).

[0041] FIG. 5 is a diagram illustrating the configuration of a hologram pattern generation system (200) illustrated in FIG. 4. The hologram pattern generation system (200) can be implemented as a computing system including a communication unit (210), an output unit (220), a processor (230), an input unit (240), and a storage unit (250), as illustrated.

[0042] The communication unit (210) is a communication interface for connection with an external network or external device, and in the embodiment of the present invention, transmits a hologram pattern to a hologram printer (300). The output unit (220) is an output means for displaying the results of calculations performed by the processor (230), and the input unit (240) is a user interface for receiving user commands and transmitting them to the processor (230).

[0043] The processor (230) generates a hologram pattern according to the procedure illustrated in FIG. 3 described above. The storage unit (250) provides the storage space necessary for the processor (230) to function and operate.

[0044] So far, a preferred embodiment of a high-resolution stereogram-type micro-patterning hologram pattern generation method and system for nanoimprinting has been described in detail.

[0045] In the above embodiment, a hologram pattern is calculated in sub-hogel units, which are smaller units within a hogel, and this is tiled in hogel units, thereby enabling the creation of high-resolution content through tiling at the content level as well as hardware tiling.

[0046] This allows for the resolution of 3D content displayed through holograms using nanoimprint technology to be increased, making it more realistic and enabling the efficient delivery of more information.

[0047] Holograms using nanoimprinting technology have significance as a new media space through convergence with the field of art content media, and it is expected that this will help revitalize the hologram industry by enabling the display of more efficient and high-resolution content through the information of the hologram wavefront.

[0048] Meanwhile, it goes without saying that the technical idea of ​​the present invention can also be applied to a computer-readable recording medium containing a computer program that performs the functions of the device and method according to the present embodiment. In addition, the technical idea according to various embodiments of the present invention can be implemented in the form of computer-readable code recorded on a computer-readable recording medium. The computer-readable recording medium can be any data storage device that can be read by a computer and store data. For example, the computer-readable recording medium can be a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, an optical disk, a hard disk drive, etc. In addition, the computer-readable code or program stored on the computer-readable recording medium can be transmitted through a network connected between computers.

[0049] In addition, although the preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the specific embodiments described above, and various modifications can be made by a person having ordinary skill in the art to which the present invention pertains without departing from the gist of the present invention as claimed in the claims, and such modifications should not be understood individually from the technical idea or prospect of the present invention.

Claims

1. A step of dividing a hogel star hologram image into a plurality of sub-hogel star hologram images; A step of calculating a hologram pattern for each hologram image unit divided into sub-hogels; and A method for generating a hologram pattern, characterized by comprising: a step of generating a hologram pattern of a hogel from the hologram patterns of calculated sub-hogels.

2. In claim 1, The creation phase is, A method for generating a hologram pattern, characterized by generating a hologram pattern of a hogel by tiling calculated sub-hogel star hologram patterns.

3. In claim 1, The sub-hogels, A method for generating a holographic pattern, characterized by having hogels divided into a grid.

4. As per claim 1, A method for generating a hologram pattern, characterized in that it further includes a step of configuring a hologram pattern of a hologram image with the hologram patterns of the hogel when all hologram patterns of the hogel are generated.

5. In claim 1, further comprising a step of rendering a holographic image by hosel; The splitting step is, A method for generating a hologram pattern, characterized by dividing a rendered hogel star hologram image into sub-hogel star hologram images.

6. In claim 5, The creation phase is, A method for generating a hologram pattern, characterized in that the hologram pattern is generated as one file for each hogel.

7. In claim 6, The number of sub-hogels is A method for generating a holographic pattern characterized by having a number of holograms less than that of hogels.

8. In claim 6, The holographic pattern of the holographic image is, A method for generating a holographic pattern, characterized in that the pattern is transmitted to a printer in file units.

9. In claim 1, A method for generating a hologram pattern, characterized by further comprising a step of recording a hologram pattern on a hologram film in hogel units.

10. A processor that divides a hogel star hologram image into a plurality of sub-hogel star hologram images, calculates a hologram pattern for each divided sub-hogel star hologram image, and generates a hogel hologram pattern from the calculated hologram patterns of the sub-hogels; and A hologram pattern generation system, characterized by including a storage unit that provides storage space required by a processor.

11. Step of rendering holographic images for each hogel; A step of calculating a holographic pattern per holographic image unit for each sub-hogel; A method for generating a hologram pattern, characterized by comprising: a step of generating a hologram pattern of a hogel from the hologram patterns of calculated sub-hogels.

12. A processor that renders a hologram image for each hogel, calculates a hologram pattern for each sub-hogel hologram image unit, and generates a hologram pattern for each hogel from the calculated hologram patterns of the sub-hogels; and A hologram pattern generation system, characterized by including a storage unit that provides storage space required by a processor.

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