KR101962213B1 - Manufacturing method of glass master having stereo scopic image using the diffraction of surfacerelief's fine pixels - Google Patents

Abstract

The present invention relates to a method for manufacturing a glass master which can be applied to various industrial fields by being formed in the shape of a thin film and displaying a stereoscopic image under normal white light. According to the present invention, the method for manufacturing a glass master having a stereoscopic image by using diffraction of a surface uneven type fine pixel includes: a step of preparing N1 X N1 (N1= natural numbers of 2 or greater) of first digital images (D1) individually having resolution of MDPI (Medium Dots Per Inch) and rotating on a three-dimensional object at a predetermined angle, wherein the first digital image (D1) is two dimensional; a step of preparing a second digital image (D2) divided into N′1×N′1(N′1=N1) of areas and individually having the resolution of N1×Mdpi by changing each of the first digital image (D1) having the resolution of MDPI, to the resolution of N1×Mdpi; a step of aligning the area of each second digital image (D2) divided into the N′1×N′1 of areas and having the resolution of N1×Mdpi in N″1×N″1 of each individual area divided, to have different dot gradation values and editing the same to be a single third digital image (D3); a step of dividing the dot gradation value formed in each coordinate (Xn, Yn) D3 of each area in the third digital image (D3) in 1-N grade and storing the same in a control device (7); a step of mutually linking a rotation angle of grating (3) and the 1-N grade which is each dot gradation value formed in each coordinate value (Xn, Yn) D3 of the third digital image (D3); and a step of rotating the angle of the grating (3) in order in accordance with the dot gradation value of each coordinate (Xn, Yn) D3 of the third digital image (D3) and recording the same in a photoresist plate (P) in order using light generated by a light generating device (2).

Description

Technical Field [0001] The present invention relates to a manufacturing method of a glass master in which a stereoscopic image is displayed using a diffraction of a surface irregular fine pixel,

The present invention relates to a method of manufacturing a glass master in which a stereoscopic image is displayed. More specifically, a plurality of different images are edited so that pixels are not overlapped and converted into a single image. Then, The present invention relates to a method of manufacturing a glass master capable of enjoying a stereoscopic image even under a normal white light such as a fluorescent lamp, as well as being applicable to films such as ID cards, wrapping paper, pouches, architectural tiles and the like.

A lenticular lens is widely known as a means for reconstructing a two-dimensional plane image into a three-dimensional stereoscopic image. When a planar image is viewed through the left and right eyeballs in a state that a plane image is positioned on one side of a lenticular lens having a plurality of semi-cylindrical lenses arranged, images recognized by the binocular disparity of the left and right eyes are combined in the brain The spectator recognizes the reconstructed image in three dimensions.

Although many ideas have been introduced to utilize such a function of the lenticular lens, in the case of the lenticular lens, there is a problem that overlapping images overlap each other and also cause dizziness when used over a certain period of time. It has been disadvantageous in that it can not be fabricated as a thin film having a thickness less than a certain thickness.

Contrary to a lenticular lens that reproduces a stereoscopic image by refracting light, a reflection grating is known as means for reflecting a light to reproduce a stereoscopic image. This is a method using a grating having a plurality of reflection surfaces as shown in FIG. 6. In the case of a reflection grating, since the angles of the reflection surfaces must be individually calculated, the production itself is very difficult.

Korean Patent No. 1525853

SUMMARY OF THE INVENTION The present invention has been made to solve the problems of the prior art, and an object of the present invention is to provide a glass master capable of expressing a stereoscopic image even under ordinary white light, ≪ / RTI >

According to an aspect of the present invention, there is provided a method of manufacturing a three-dimensional object, comprising: preparing a three-dimensional solid object having a specific shape or shape; (N1 = 2 or more natural number) first digital images each having a resolution of Mdpi (dots per inch) and two dimensions and rotating in a certain angle in one direction or the other with the three-dimensional solid object fixed at a specific angle (D1); Each of the first digital images D1 having a resolution of Mdpi is changed to a resolution of N1 x Mdpi, and each of the first digital images D1 has a resolution of N1 x Mdpi and is divided into N'1 x N'1 (N'1 = N1) Preparing a second digital image (D2); And N '1 × N' ', having a resolution of N1 × Mdpi for each individual area of N "1 × N", and then dividing the entire area into N "1 × N" Arranging corresponding areas of each second digital image D2 partitioned into one area so as to have different dot density values and editing them into a single third digital image D3; Dividing the dot density values formed in the individual coordinates (Xn, Yn) D3 of each region in the third digital image D3 into 1 to N grades and storing them in the controller 7; Interlocking 1 to N grades, which are the respective dot density values, formed at the rotation angles 0 ° to 180 ° of the grating 3 and the individual coordinates (Xn, Yn) D3 of the third digital image D3; Placing a photoresist plate (P) on the work plate (1); The angle of the grating 3 is sequentially rotated in accordance with the dot density value of each of the individual coordinates (Xn, Yn) D3 of the third digital image D3, (P) in accordance with an instruction from the user.

An iris 4 for removing diffracted light other than the first diffracted light from the grating 3 and the diffracted light by the grating 3 are provided between the grating 3 and the port resist plate P, A focusing lens 5 for focusing the light onto a specific point of the plate P may be provided.

The present invention relates to an image processing method and apparatus for editing a plurality of digital images rotated at a predetermined angle into a single digital image and recording the digital image on a photoresist plate, It is possible to reproduce a clearer stereoscopic image even with white light by constituting each region constituting the image to have different diffraction angles, and it is possible to mass produce the thin film type film by the embossing technique, Is expected.

1A to 1C are schematic diagrams for explaining an example of each step of manufacturing a glass master according to the present invention,
2 is a configuration view of an optical system for recording a glass master according to the present invention.
Fig. 3 is a schematic diagram of the densities of dots formed in each individual coordinate in an edited third digital image prepared according to the present invention; Fig.
Figure 4 is a rotation angle interlocking relationship between an individual dot density value of an edited third digital image prepared according to the present invention and an optical system grating;
Fig. 5 is a schematic view of a conventional lenticular lens. Fig.
6 is a schematic use state of a conventional reflection grating.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the technical features of the present invention, A detailed description thereof will be omitted.

The present invention relates to a method of preparing a digital image, comprising the steps of preparing a solid object, preparing a first digital image D1 using a solid object, preparing a second digital image D2 using the first digital image D1, Moving the image D2 to prepare a third digital image D3, grading and storing the individual coordinate dot density values of the third digital image D3, storing the individual coordinate dot density values and the rotation angle of the grating And a step of exposing the photoresist plate on the work plate to a photoresist plate interposed therebetween. Each of these steps will be discussed in detail.

First, a three-dimensional solid object to be represented by a hologram image is prepared. The three-dimensional solid object may be a real space or a three-dimensional structure having a specific shape or shape, which is a virtual space. That is, virtual stereoscopic images produced through S / W such as 3DMAX as well as actual objects such as automobiles and cultural properties, which are three-dimensional stereoscopic objects, are included.

When the three-dimensional object is determined, N1 × N1 first digital images D1 are prepared using the three-dimensional object (N1 is a natural number of 2 or more). The first digital image D1 can be obtained by rotating the stereoscopic image by a certain angle in one direction or the other with the stereoscopic object fixed at a specific angle. At this time, each acquired first digital image D1 has a resolution of M dpi (dots per inch).

1A shows an example of four first digital images D1, D12, D13, and D14 obtained by rotating a virtual stereoscopic image by a certain angle in one direction after producing a virtual stereoscopic image through S / W Lt; / RTI > (20 mu m) resolution of each first digital image D1 in Fig. 1A.

When N1 x N1 first digital images D1 are prepared, a second digital image D2 is prepared using each of them. The second digital image D2 can be implemented by simply changing the first digital image D1 having the resolution of Mdpi to a resolution of N1 x Mdpi using arbitrary S / W.

That is, if the first digital image D1 is composed of 2 × 2 (four) as shown in FIG. 1A, and each of the first digital images D1 has a resolution of 1270 dpi (20 μm) / W to force the resolution of each of the first digital images D1 to 2 x 1270 dpi, i.e., 2540 dpi (10 mu m).

If each of the first digital images D1 having a resolution of Mdpi is forcibly changed to a resolution of N1 x Mdpi, the first digital image D1 is divided into N1 < RTI ID = 0.0 > A second digital image D2 is obtained. That is, each of the first digital images of 1270 dpi (20 mu m) in Fig. 1A is converted into a second digital image having four regions of 2540 dpi (10 mu m) by forced change of resolution.

When the first digital image is edited without changing the resolution, there are pixels overlapping each other. In order to prevent duplication of pixels in the step of preparing a third digital image, which will be described later, Instead of directly merging one digital image, a second digital image is prepared through resolution change, and then a third digital image is prepared using the second digital image.

When the second digital image D2 is prepared, it is edited using the third digital image D3. Editing into the third digital image D3 is performed by dividing the entire area of the third digital image D3 into N "1 × N" 1 individual areas, and dividing the area into N'1 × N ' And copying and pasting the corresponding area of each second digital image D2. Here, N " 1 = N1.

That is, the first digital images D11, D12, D13, and D14 shown in FIG. 1A are converted into second digital images D21, D22, D23, and D24, respectively, , The third digital image D3 is divided into four regions D31, D32, D33, and D34, respectively. Then, corresponding regions of the second digital images D21, D22, D23, and D24 in the respective regions of the third digital image Copy and paste.

Such editing can be easily implemented by software such as Photoshop. When the third digital image D3 is edited in the above manner, the second digital images D2 different from each other can be combined into one image without overlapping of pixels.

When the corresponding area of the second digital image D2 is arranged in the corresponding area of the third digital image D3 partitioned into a plurality of areas, the respective areas of the third digital image D3 partitioned into a plurality of areas are different from each other, As shown in FIG.

In the case of the edited third digital image D3, there is no overlap of pixels, but if light is recorded in the same pattern in each area, the recorded light pattern (the angle of the grid) 3 The other image in the digital image (D3) can not be recognized at all. That is, the image can not be stereoscopically identified.

In order to create a grid at different angles on the photoresist plate P in the exposure step to be described later, in order to edit the third digital image D3 using the second digital image D2, D3) of each of the N " 1xN " individual regions have different dot density values.

The dot density value corresponds to the angle of the interference fringe recorded on the photoresist plate P, and a gray scale used in a commercial program such as Photoshop may be applied. FIG. 1C is a graph showing dot intensities for the respective areas (2 × 2 areas) of the third digital image D3 to be -20, -7, And gives an example of editing.

(Four in the case of FIG. 1A) are formed by different interference fringes when the recording is completed by having different density values (rotation angles of the grating) A stereoscopic image is realized by allowing the images of the two persons to enter the pupil of the spectator at the same time (diffraction).

When the third digital image D3 having different dot density values for each region is edited, the dot density values formed in the individual coordinates (Xn, Yn) D2 of the respective regions in the third digital image D3 are changed from 1 to N And stores them in the control unit 7 in a class. Fig. 3 shows a schematic tonality diagram of dots formed in each individual coordinate in an edited third digital image prepared according to the present invention.

Here, the grade 1 indicates the case where there is no shade (the upper left side in Fig. 4 corresponds to the margins as the leftmost case), and the grade N indicates the case where the tint is the strongest (from the upper side to the far right side in Fig. 4) . Whether the dot density value is subdivided is arbitrary, and it can be done using Photoshop or the like as described above.

The optical system disclosed in Fig. 2 is a recording apparatus according to the present invention, which is similar to the optical system disclosed in Korean Patent No. 1525853. Therefore, the recording method of the present invention using the optical system of FIG. 2 can also be accomplished through one of the above-described techniques.

Next, in the grating 3, the dot gradation values 1 to N, which are the dot density values formed in the individual coordinates (Xn, Yn) D3 in the rotation angle of 0 ° to 180 ° and the third digital image D3, .

The grating 3 is capable of specifying the rotation angle while diffracting the light generated and emitted from the light source 2. When the grating 3 is rotated, the interference fringes generated in the photoresist plate P rotate, and thus the incident light is rotated by that angle to generate the interference fringes in the photoresist. It is needless to say that the interlocked value must be stored in the control device 7.

FIG. 4 shows an example in which dot density values are classified into nine grades, and the respective density values are compared with the grating rotation angles of 0 DEG to 180 DEG. In this case, the darkest shade is interlocked with the state (0 °) in which the grating 3 is fixed, and in the case where there is no shade as in the margins, the grating 3 is interlocked with the state in which the grating 3 is completely rotated to 180 °.

When each dot density value formed in each individual coordinate (Xn, Yn) D3 in the third digital image D3 is interlocked with the rotation angle of the grating 3, a photoresist plate P is placed on the work plate 1 And the light corresponding to each dot density value formed in each individual coordinate (Xn, Yn) D3 in the third digital image D3 is sequentially recorded on the photoresist plate P. The steps can be done as follows.

First, when a signal of the control device 7 is inputted, each of the X and Y axis driving means 8 is operated so that the work plate 1 on which the photoresist plate P is mounted is moved and positioned in a specific direction, Is interlocked with the individual coordinate (X1, Y1) D3 dot density value of the third digital image D3 and rotates by a certain angle.

When the light generating device 2 is operated in this state, the light generated by the light generating device 2 is incident on the grating 3 rotated at a predetermined angle via the reflecting mirror 6, (X1, Y1) D3 dot intensity value, and records the light at the corresponding coordinates of the photoresist plate (P).

At this time, the light generating device 2 constituting the optical system may be made of a laser, and the laser may be any one selected from a UV pulse laser (351 nm, 355 nm) or a CW laser (405 nm, 442 nm, 460 nm).

2, when the iris 4 and the focusing lens 5 are provided between the grating 3 and the port resist plate P in recording the interference fringes on the port resist plate P, .

The iris 4 is a means for removing diffracted light other than the first one out of the light diffracted at a predetermined angle in the grating 3, whereby only the first-order diffracted light is exposed through the photoresist plate P. [ The elimination of the zero-order diffracted light can be solved by adding a dark film to the central portion of the iris.

The focusing lens 5 is a means for focusing the light diffracted by the grating 3 at a certain angle to a specific point of the port resist plate P. [ The focusing lens may be a conventional lens used in an optical system.

When the dot grayscale value for the individual coordinates (X1, Y1) D3 of the third digital image D3 is recorded in the specific coordinates of the port resist plate P, the signal of the control device 7 is input again, The work plate 1 on which the photoresist plate P is mounted is moved by a predetermined distance in the X axis direction and the grating 3 is moved to the individual coordinates X2, Y1) Interlocking with the D3 dot density value and rotating at a certain angle.

When the grating 3 rotates by a certain angle in conjunction with the individual coordinate (X2, Y1) D3 dot density value of the third digital image D3, the light generated in the light generating device 2 is rotated in a grating 3, and the grating 3 diffracts the incident light at a specific angle in conjunction with the dot density value of the individual coordinates (X2, Y1) D3, and then records the diffracted light at the corresponding coordinates of the photoresist plate P.

Thereafter, the X-axis driving means 8 is operated again so that the work plate 1 on which the photoresist plate P is mounted is sequentially moved in the X-axis direction by a predetermined distance, and the grating 3 is moved to the third Individual coordinates (X3, Y1) D3, (X4, Y1) D3,. . , (Xn, Y1) D3, the interference fringes for (Xn, Y1) D3 are recorded on the photoresist plate P by repeating the above steps with the dot density values of

When the interference fringe for (Xn, Y1) D3 of the third digital image D3 is recorded on the photoresist plate P, the X and Y football driving means 8 and 9 are operated to move the work plate 1 to X Axis and the Y-axis, respectively, and then sequentially moved by a predetermined distance in the X-axis direction. At the same time, the grating 3 is interlocked with the dot density value, and the third digital image And the dot density value of each area of the area D3 is recorded.

When the recording is completed by the repetitive operation, the photoresist plate (P) can be used as a glass master to display a stereoscopic image even under ordinary white light, as well as to produce a thin film It is possible to implement the product in the form of.

If the color of the photoresist plate P is to be represented, the type of the grating 3 may be changed in the optical system of FIG. That is, red, green, and blue are separated from each other in the first digital image D1 made of primary color using S / W such as Photoshop, and then the above steps are repeatedly performed while changing the grating do.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. It will be apparent that the present invention can be practiced with added features.

1: Work plate 2: Light generating device
3: Grating 4: Iris
5: focusing lens 6: reflection mirror
7: Control device 8: X-axis driving means
9: Y-axis driving means P: photoresist plate

Claims (2)

Preparing a three-dimensional solid body having a specific shape or shape;
(N1 = 2 or more natural number) first digital images each having a resolution of Mdpi (dots per inch) and two dimensions and rotating in a certain angle in one direction or the other with the three-dimensional solid object fixed at a specific angle (D1);
Each of the first digital images D1 having a resolution of Mdpi is changed to a resolution of N1 x Mdpi, and each of the first digital images D1 has a resolution of N1 x Mdpi and is divided into N'1 x N'1 (N'1 = N1) Preparing a second digital image (D2);
And N '1 × N'', having a resolution of N1 × Mdpi for each individual area of N "1 × N", and then dividing the entire area into N "1 × N" Arranging corresponding areas of each second digital image D2 partitioned into one area so as to have different dot density values and editing them into a single third digital image D3;
Dividing the dot density values formed in the individual coordinates (Xn, Yn) D3 of each region in the third digital image D3 into 1 to N grades and storing them in the controller 7;
Interlocking 1 to N grades, which are the respective dot density values, formed at the rotation angles 0 ° to 180 ° of the grating 3 and the individual coordinates (Xn, Yn) D3 of the third digital image D3;
Placing a photoresist plate (P) on the work plate (1);
The angle of the grating 3 is sequentially rotated in accordance with the dot density value of each of the individual coordinates (Xn, Yn) D3 of the third digital image D3, (P) sequentially;
A method of fabricating a glass master in which a stereoscopic image is displayed using diffraction of a surface irregular fine pixel. The method according to claim 1,
An iris 4 for removing diffracted light other than the first diffracted light from the grating 3 and the diffracted light by the grating 3 are provided between the grating 3 and the port resist plate P, And a focusing lens (5) for converging the focused light onto a specific point of the plate (P).

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