阅读说明：本技术 全息图转录设备 (Hologram transcribing apparatus ) 是由 朴声澈 金银锡 吴仁焕 于 2019-10-08 设计创作，主要内容包括：提供一种全息图转录设备,包括：曝光部；和光源部,所述光源部用于将光照射在曝光部上。这里,曝光部包括用于转移全息图膜的转印单元,并且曝光部能够旋转以改变与光形成的角度。(There is provided a hologram transcribing apparatus including: an exposure section; and a light source section for irradiating light onto the exposure section. Here, the exposure section includes a transfer unit for transferring the hologram film, and the exposure section is rotatable to change an angle formed with light.)

1. A hologram transcribing apparatus comprising:

an exposure section; and

a light source section configured to irradiate light to the exposure section,

wherein the exposure section includes a transfer unit configured to transfer a hologram film, an

The exposure section is rotatable to change an angle formed with the light.

2. The hologram transcribing apparatus according to claim 1, wherein the exposure section further comprises a hologram original plate, and

the transfer unit places the hologram film on the hologram original plate.

3. The hologram transcribing apparatus of claim 2, wherein the hologram master is rotatable with respect to the transfer unit.

4. The hologram transcribing apparatus of claim 2, wherein the hologram master includes a first surface and a second surface that is distinct from the first surface,

the transfer unit includes a first roller and a second roller,

the first roller moves the hologram film onto the first surface, and

the second roller moves the hologram film onto the second surface.

5. The hologram transcribing apparatus according to claim 1, wherein the light source section includes:

a light source configured to emit light; and

a mirror configured to reflect the light emitted from the light source and irradiate the light to the exposure section,

wherein the exposure section rotates about a point where a central axis of the light reflected by the mirror intersects with the hologram film.

6. The hologram transcribing apparatus according to claim 5, wherein the light source section further comprises a filter that is provided between the light source and the mirror, and

the optical filter includes:

a lens configured to magnify the light emitted from the light source; and

a pinhole configured to correct light amplified by the lens.

7. The hologram transcribing apparatus according to claim 5, wherein the light reflected by the reflecting mirror is irradiated to the hologram film in the form of parallel light.

8. The hologram transcribing apparatus according to claim 1, wherein the exposure section forms an angle of 0 ° to 180 ° with the light.

9. A hologram transcribing apparatus comprising:

a hologram master having a first surface and a second surface disposed on an opposite side of the first surface defined thereon;

a transfer unit configured to transfer a hologram film and place the hologram film on the hologram original plate; and

a light source section configured to irradiate light to the hologram original plate,

wherein the transfer unit includes a first roller and a second roller,

the first roller moves the hologram film onto the first surface, and

the second roller moves the hologram film onto the second surface.

10. The hologram transcribing apparatus according to claim 9, wherein the transfer unit further comprises:

a first contact roller disposed adjacent to the first surface; and

a second contact roller disposed adjacent to the second surface,

wherein the first contact roller or the second contact roller moves in a direction parallel to an extending direction of the hologram original plate in a state where the hologram film contacts the first surface or the second surface.

11. The hologram transfer apparatus according to claim 10, wherein the first roller comprises a first sub-roller and a second sub-roller, and the hologram film is transferred between the first sub-roller and the second sub-roller and moved onto the first surface, and

the second roller includes a third sub-roller and a fourth sub-roller, and the hologram film is transferred between the third sub-roller and the fourth sub-roller and moved onto the second surface.

12. The hologram transcribing apparatus according to claim 11, further comprising a protective film supply section,

wherein the protective film supply part attaches a protective film to the hologram film that has passed through the hologram original plate.

13. The hologram transcribing apparatus according to claim 12, further comprising a cleaning part,

wherein the cleaning part cleans the hologram film to which the protective film is attached.

14. The hologram transcribing apparatus of claim 10, wherein the hologram master is rotatable with respect to an irradiation direction of the light.

15. The hologram transcribing apparatus of claim 14, wherein the hologram master rotates about a point where a central axis of the light irradiated to the hologram master intersects the hologram master.

Technical Field

The present invention relates to a hologram transcription apparatus, and more particularly, to a hologram transcription apparatus capable of selectively manufacturing a transmission type hologram and a reflection type hologram by using one apparatus and simply adjusting a transcription angle.

Background

A hologram is formed by generating interference between an object wave, which is light reflected or diffracted by an object, and a reference wave, and recording an interference pattern in a photosensitive material.

As the most common method since the Dennis Garbor invention hologram, there are first two beam transmission holograms developed by E, Leith et al and one beam reflection hologram developed by Denisyuk et al. The transmission hologram allows the hologram to be played in the opposite direction to the reference wave by allowing the reference wave and the object wave to be incident in the same direction with respect to the recording medium at the time of recording and allowing the reference wave to transmit through the hologram recorded in the recording medium at the time of playing. The reflection hologram allows the hologram to be played in the same direction as the reference wave by allowing the reference wave and the object wave to be incident in opposite directions with respect to the recording medium at the time of recording and allowing the reference wave to be reflected by the hologram at the time of playing.

The hologram described above can be manufactured by irradiating each of the object wave and the reference wave to a photosensitive material, and also can be manufactured by a method of manufacturing a hologram original plate (master) and duplicating the hologram original plate.

Disclosure of Invention

Technical problem

The present invention provides a hologram transcription apparatus capable of simply adjusting a light irradiation angle.

The present invention provides a hologram transcription apparatus capable of adjusting an irradiation angle of light to manufacture various holograms.

The present invention provides a hologram transcription apparatus capable of manufacturing all of a transmission type hologram and a reflection type hologram by using one apparatus.

The present invention provides a hologram transcription apparatus capable of bringing a hologram film into close contact with a hologram master.

The present invention provides a hologram transcription apparatus capable of preventing bubbles and foreign substances from being introduced between a hologram film and a hologram master.

The present invention provides a hologram transcription apparatus capable of preventing vibration.

The present invention provides a hologram transcription apparatus capable of preventing a transcription distortion phenomenon.

The present invention provides a hologram transcribing apparatus capable of preventing a hologram film from being deformed by tension.

The object of the present invention is not limited to the above object, and other objects not described herein will be clearly understood by those skilled in the art from the following description.

Technical scheme

In order to achieve the above object, a hologram transcribing apparatus according to an exemplary embodiment of the present invention includes: an exposure section; and a light source section configured to irradiate light to the exposure section, wherein the exposure section includes a transfer unit configured to transfer the hologram film, and the exposure section is rotatable to change an angle formed with the light.

In order to achieve the above object, in the hologram transcribing apparatus according to an exemplary embodiment of the present invention, the exposure section may further include a hologram original plate, and the transfer unit may place the hologram film on the hologram original plate.

In order to achieve the above object, in a hologram transcribing apparatus according to an exemplary embodiment of the present invention, a hologram master may be rotatable with respect to a transfer unit.

In order to achieve the above object, in a hologram transfer apparatus according to an exemplary embodiment of the present invention, a hologram master may include a first surface and a second surface different from the first surface, a transfer unit may include a first roller and a second roller, the first roller may move a hologram film onto the first surface, and the second roller may move the hologram film onto the second surface.

In order to achieve the above object, in a hologram transcribing apparatus according to an exemplary embodiment of the present invention, the light source part may include: a light source configured to emit light; and a mirror configured to reflect light emitted from the light source and irradiate the light to the exposure portion, and the exposure portion may be rotated about a point where a central axis of the light reflected by the mirror intersects with the hologram film.

In order to achieve the above object, in the hologram transcribing apparatus according to an exemplary embodiment of the present invention, the light source part may further include a filter disposed between the light source and the mirror, and the filter may include: a lens configured to magnify light emitted from a light source; and a pinhole configured to correct the light amplified by the lens.

In order to achieve the above object, in the hologram transcribing apparatus according to an exemplary embodiment of the present invention, the light reflected by the mirror may be irradiated to the hologram film in the form of parallel light.

In order to achieve the above object, in the hologram transcribing apparatus according to an exemplary embodiment of the present invention, the exposed portion may form an angle of 0 ° to 180 ° with the light.

In order to achieve the above object, a hologram transcribing apparatus according to an exemplary embodiment of the present invention includes: a hologram master having a first surface and a second surface disposed on an opposite side of the first surface defined thereon; a transfer unit configured to transfer the hologram film and place the hologram film on the hologram original plate; and a light source section configured to irradiate light to the hologram original plate, wherein the transfer unit includes a first roller to move the hologram film onto the first surface and a second roller to move the hologram film onto the second surface.

In order to achieve the above object, in the hologram transcribing apparatus according to an exemplary embodiment of the present invention, the transfer unit may further include: a first contact roller disposed adjacent to the first surface; and a second contact roller disposed adjacent to the second surface, and the first contact roller and the second contact roller may move in a direction parallel to an extending direction of the hologram original plate in a state where the hologram film is in contact with the first surface or the second surface.

In order to achieve the above object, in the hologram transfer apparatus according to an exemplary embodiment of the present invention, the first roller may include a first sub-roller and a second sub-roller, and the hologram film may be transferred between the first sub-roller and the second sub-roller and moved onto the first surface. Further, the second roller may include a third sub-roller and a fourth sub-roller, and the hologram film may be transferred between the third sub-roller and the fourth sub-roller and moved onto the second surface.

In order to achieve the above object, the hologram transcribing apparatus according to an exemplary embodiment of the present invention may further include a protective film supply part, wherein the protective film supply part may attach a protective film to the hologram film passing through the hologram original plate.

In order to achieve the above object, the hologram transcribing apparatus according to an exemplary embodiment of the present invention may further include a cleaning part, wherein the cleaning part may clean the hologram film to which the protective film is attached.

In order to achieve the above object, in a hologram transcribing apparatus according to an exemplary embodiment of the present invention, a hologram original plate may be rotatable with respect to an irradiation direction of light.

In order to achieve the above object, in the hologram transfer apparatus according to an exemplary embodiment of the present invention, the hologram original plate may be rotated about a point where a central axis of light irradiated to the hologram original plate intersects with the hologram original plate.

Features of other embodiments are included in the detailed description and the drawings.

Advantageous effects

According to the hologram transcription apparatus of the present invention, the light irradiation angle can be simply adjusted.

According to the hologram transcribing apparatus of the present invention, the light irradiation angle can be adjusted to manufacture various holograms.

According to the hologram transcription apparatus of the present invention, both the transmission type hologram and the reflection type hologram can be manufactured by using one apparatus.

According to the hologram transfer apparatus of the present invention, the hologram film may closely contact the hologram original plate.

According to the hologram transfer apparatus of the present invention, it is possible to prevent bubbles and foreign substances from being introduced between the hologram film and the hologram master.

According to the hologram transcription apparatus of the present invention, vibration can be prevented.

According to the hologram transcription apparatus of the present invention, the transcription distortion phenomenon can be prevented.

According to the hologram transcription apparatus of the present invention, the hologram film can be prevented from being deformed by tension.

Effects of the present invention are not limited to the above-described effects, and other effects not described herein will be clearly understood by those skilled in the art from the following description.

Drawings

Fig. 1 is a schematic diagram illustrating a hologram transcribing apparatus according to an exemplary embodiment of the present invention.

Fig. 2 is a sectional view illustrating a supply device of a hologram transcription apparatus according to an exemplary embodiment of the present invention.

Fig. 3 is a sectional view illustrating an exposure part of a hologram transcription apparatus according to an exemplary embodiment of the present invention.

Fig. 4A is a sectional view illustrating a transcription principle of a hologram transcription apparatus according to an exemplary embodiment of the present invention.

Fig. 4B is a sectional view illustrating an operation process of a hologram transcribing apparatus according to an exemplary embodiment of the present invention.

Fig. 5 is a sectional view illustrating a rewinding device of the hologram transcribing apparatus according to an exemplary embodiment of the present invention.

Fig. 6 is a sectional view illustrating a hologram transcribing apparatus according to an exemplary embodiment of the present invention.

Fig. 7 is a sectional view illustrating an exposure part of a hologram transcription apparatus according to an exemplary embodiment of the present invention.

Fig. 8A is a sectional view illustrating a transcription principle of a hologram transcription apparatus according to an exemplary embodiment of the present invention.

Fig. 8B is a sectional view illustrating an operation process of the hologram transcribing apparatus according to an exemplary embodiment of the present invention.

Fig. 9 is a sectional view illustrating a supply device of a hologram transcription apparatus according to an exemplary embodiment of the present invention.

Detailed Description

Exemplary embodiments of the present invention will be described with reference to the accompanying drawings in order to fully understand the constitution and effects of the technical idea of the present invention. However, the technical idea of the present invention may be embodied in different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

Like reference numerals refer to like elements throughout. Embodiments of the present disclosure will be described with reference to block diagrams, perspective and/or cross-sectional views as idealized exemplary views of the present disclosure. In addition, in the drawings, the sizes of layers and regions are exaggerated to effectively explain technical features. The regions illustrated in the drawings have general characteristics, and the shapes of the regions illustrated in the drawings are used to illustrate specific shapes of regions of a device, and should not be construed as limiting the scope of the present invention. Further, although various terms are used in various embodiments of the present specification to describe various components, the components should not be limited to the terms. These terms are only used to distinguish one element from another. The embodiments described and illustrated herein also include complementary embodiments thereof.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In this specification, unless the context specifically indicates otherwise, singular terms may include the plural. The meaning of "comprising" and/or "comprises" designates an element but does not exclude other elements.

Hereinafter, the present invention will be described in detail by explaining preferred embodiments of the invention with reference to the accompanying drawings.

Fig. 1 is a schematic view illustrating a hologram transcription apparatus according to an exemplary embodiment of the present invention, and fig. 2 is a sectional view illustrating a supply device of the hologram transcription apparatus according to an exemplary embodiment of the present invention.

Referring to fig. 1, the hologram transcription apparatus 1000 may include a supply device 101 and a rewind device 102.

The supply device 101 may include a photosensitive film unwinder 111, a protective film removing part 112, a light source part 113, and an exposure part 114.

The photosensitive film unwinder 111 may unwind the photosensitive film SLF and move the photosensitive film SLF to the protective film removing part 112. In an embodiment, the photosensitive film unwinder 111 may include a roller as shown in fig. 2. The photosensitive film unwinder 111 can move the photosensitive film SLF to the auxiliary rollers 205 and 206 while rotating.

Referring to fig. 1 and 2, the photosensitive film SLF may include a hologram film HF and a protective film PF. In an embodiment, a plurality of protective films PF may be provided. A plurality of protective films PF may be attached to both surfaces of the hologram film HF. That is, the hologram film HF may be disposed between the protective films PF. The protective film PF can protect the hologram film HF from external impact. In an embodiment, the hologram film HF may include a base film (not shown) and a photosensitive material (not shown). The photosensitive material may be disposed on one surface of the base film. For example, the base film may include triacetyl cellulose (TAC), transparent Polyester (PET), polypropylene (PP), polyvinyl chloride (PVC), and Polycarbonate (PC). However, embodiments of the present invention are not limited thereto.

The photosensitive film SLF supplied from the photosensitive film unwinder 111 can be moved to the auxiliary rollers 205 and 206 by the auxiliary rollers 201 to 204. Referring to fig. 2, the photosensitive film SLF may move through the first to sixth auxiliary rollers 201 to 206. However, the embodiment of the present invention is not limited thereto, and the number and position of the auxiliary rollers may be variously changed.

After the photosensitive film SLF is moved by the auxiliary rollers 201 to 206, the protective film PF of the photosensitive film SLF may be removed by the protective film removing part 112. In an embodiment, the protective film removing part 112 may include a rewinder roller. The rewinder roller may be provided in plurality. One roller may be rotated in a counterclockwise direction to remove the protective film PF disposed at the upper side of the hologram film HF. The other roller may be rotated in a clockwise direction to remove the protective film PF disposed at the lower side of the hologram film HF. However, embodiments of the present invention are not limited thereto, and the shape of the protective film removing part 112 may be deformed in various ways.

After the protective film PF is removed, the hologram film HF may be provided to the exposed portion 114.

Fig. 3 is a sectional view illustrating an exposure part of a hologram transcription apparatus according to an exemplary embodiment of the present invention.

Referring to fig. 3, the exposure section 114 may include a transfer unit 301 and a hologram original plate SSB. In an embodiment, the exposure section 114 may further include a case surrounding the transfer unit 301 and/or the hologram original plate SSB.

The exposure section 114 may move at an arbitrary angle. In an embodiment, the transfer unit 301 and the hologram original plate SSB may freely move at an arbitrary angle. More specifically, the transfer unit 301 and the hologram original plate SSB may be moved to form an appropriate angle with the light LL emitted from the light source section 113. The transfer unit 301 and the hologram original plate SSB may move at an arbitrary angle in an integrated manner. A detailed description of the transfer unit 301 and the hologram master SSB will be described later with reference to fig. 4A and 4B.

The transfer unit 301 may include a first roller R1 and a second roller R2. The hologram film HF may be moved to the first roller R1 by the auxiliary rollers 207 and 208. In an embodiment of the present invention, the first roller R1 may include a first sub-roller SR1 and a second sub-roller SR 2. The hologram film HF may be moved between the first sub-roller SR1 and the second sub-roller SR 2. More specifically, the first sub-roller SR1 and the second sub-roller SR2 may rotate in opposite directions to each other to move the hologram film HF toward the hologram original plate SSB. The hologram film HF may be moved to contact the hologram master SSB.

The hologram master SSB may be a hologram. The interference pattern of light can be recorded in the hologram master SSB. The hologram master SSB may have a thin plate shape. The first surface F1 and the second surface F2 may be defined on the hologram master SSB. The second surface F2 may be the opposite surface of the first surface F1. The first roller R1 may move the hologram film HF onto the first surface F1. More specifically, the hologram film HF may contact the first surface F1 by the first roller R1.

The transfer unit 301 may further include contact rollers AR1 and AR 2. The contact roller may be provided in plurality. For example, the contact rollers AR1 and AR2 may include a first contact roller AR1 and a second contact roller AR2 as shown in fig. 3. The first contact roller AR1 may be disposed adjacent to the first surface F1. The second contact roller AR2 may be disposed adjacent to the second surface F2. In a state where the hologram film HF contacts the first surface F1, the first contact roller AR1 may be moved such that the hologram film HF closely contacts the first surface F1. More specifically, the first contact roller AR1 may be moved in a direction parallel to the extending direction of the hologram original plate SSB in a state of contacting the hologram film HF. In an embodiment, the first contact roller AR1 may be moved in the extending direction of the hologram original plate SSB, or may be moved in the direction opposite to the extending direction of the hologram original plate SSB, so that the hologram film HF closely contacts the first surface F1. The hologram film HF may be disposed between the hologram original plate SSB and the first contact roller AR 1.

Since the first contact roller AR1 allows the hologram film HF to closely contact the hologram original plate SSB, it is possible to prevent bubbles and foreign substances from being introduced between the hologram original plate SSB and the hologram film HF. It is possible to prevent the transcription of the hologram from being distorted due to unnecessary deformation of the optical path or deformation of the light when the light LL is scattered by bubbles and impurities. By bringing the hologram film HF into close contact with the hologram original plate SSB, the hologram film HF and the hologram original plate SSB can be moved in an integrated manner. It is possible to prevent a transcription distortion phenomenon of the hologram caused by the vibration. It is possible to improve the problem that the hologram film HF is deformed by the tension due to the repeated contact and separation with the hologram master SSB.

The second roller R2 and the second contact roller AR2 will be described later with reference to fig. 7.

Fig. 4A is a sectional view illustrating a transcription principle of a hologram transcription apparatus according to an exemplary embodiment of the present invention.

Referring to fig. 4A, the light source part 113 may include a light source 1131, a filter 1133, and a reflector 1135.

The light source 1131 may emit light. More specifically, light source 1131 may emit first light LL1 toward optical filter 1133. In an embodiment, first light LL1 may be a laser beam.

Optical filter 1133 may receive first light LL1 and transmit second light LL2 to mirror 1135. The optical filter 1133 may include a lens 1133a and a pinhole 1133 b. In an embodiment, the lens 1133a may comprise an objective lens. The lens 1133a may be provided in plurality. The lens 1133a may transmit light to the pinhole 1133 b. The hole may be formed at a predetermined position of the pinhole 1133 b. The holes may be minute. In an embodiment, the pores may have a diameter of 10 μm to 25 μm. However, embodiments of the present invention are not limited thereto. Light can exit through the aperture. Second light LL2 that has passed through filter 1133 may be scattered to propagate. Second light LL2 may reach mirror 1135.

The mirror 1135 may reflect the second light LL 2. The reflected third light LL3 may be irradiated to the hologram film HF. In an embodiment, the mirror 1135 may comprise a parabolic mirror. The third light LL3 reflected by the mirror 1135 may be parallel light. The third light LL3 may travel in parallel.

At a center point n where the central axis LLM of the third light LL3 intersects the hologram film HF, the central axis LLM and the hologram film HF may form a predetermined angle α. In an embodiment, the angle α may be 0 ° to 180 °.

In an embodiment, the third light LL3 may reach the entire hologram film HF contacting the first surface F1 at the same time. The third light LL3 can uniformly reach the entire hologram film HF in contact with the first surface F1. In an embodiment, an area irradiated by the third light LL3 may be larger than an area of the first surface F1.

In an embodiment, the exposure section 114 may further include a light shielding layer (not shown) that protects the hologram film HF from light. The light shielding layer may absorb light other than the third light LL3 that exposes the hologram film HF and the hologram master SSB.

The hologram may be recorded in the hologram film HF by the third light LL 3. More specifically, the third light LL3 may pass through the hologram film HF. When the third light LL3 that has passed through the hologram film HF reaches the first surface F1 of the hologram original plate SSB, the light may be reflected by the hologram original plate SSB in the opposite direction. The propagation direction of the reflected light may be different from the propagation direction of the light before being reflected. In an embodiment, the propagation direction of the reflected light may form an angle of 0 ° to 180 ° with the propagation direction of the light before being reflected. The reflected light may propagate toward the hologram film HF again. The reflected light may cause interference at the hologram film HF with light incident to the hologram film HF. The interference pattern of these two lights can be recorded in the hologram film HF. The hologram film HF on which the interference pattern of light is recorded may become a hologram. The hologram film HF on which the interference pattern of light is recorded may be a reflection type hologram. The interference pattern recorded in the hologram film HF may be substantially the same as or similar to the interference pattern recorded in the hologram master SSB.

The hologram film HF on which the hologram has been recorded can be moved to the joining rollers 501 and 502 by the auxiliary rollers 209 and 210. This will be described later with reference to fig. 5.

Fig. 4B is a sectional view illustrating an operation process of a hologram transcribing apparatus according to an exemplary embodiment of the present invention.

Referring to fig. 4B, the exposure section 114 may rotate. In an embodiment, the exposure section 114 may rotate in a clockwise direction and/or a counterclockwise direction. More specifically, the exposure section 114 may rotate about the center point n. When the exposure section 114 rotates, the hologram original plate SSB and the hologram film HF may also rotate. The central axis LLM and the hologram film HF may form a predetermined angle α' at the central point n. The angle α and the angle α' may be different from each other.

The rotation of the exposure section 114 may be performed by various units. In an embodiment, the exposure section 114 may be rotated by a rotation axis connected to the center point n. The rotating shaft may be directly/indirectly connected to a motor or the like capable of rotating the rotating shaft. In the embodiment, the exposure section 114 may be rotated by various units capable of rotating the exposure section 114.

When the exposure section 114 rotates, the irradiation angle of the third light LL3 reaching the hologram film HF and the hologram original plate SSB may be changed in various ways. Various interference patterns of light can be recorded in the hologram film HF. Various reflection holograms can be produced.

According to the hologram transcription apparatus 1000 according to an embodiment of the present invention, since the exposure part 114 is rotated to change the irradiation angle of light, it is possible to manufacture holograms at various angles by using one hologram transcription apparatus 1000. Since the exposure section 114 moves, the light source section 113 may not necessarily move. In order to move the light source section 113, the light source 1131, the filter 1133, and/or the mirror 1135 may not necessarily move. The realignment operation of the light according to the rotation of the light source part 113 may be omitted. The process of manufacturing the hologram can be simplified and rapidly performed. The manufacturing cost of the hologram can be reduced.

Fig. 5 is a sectional view illustrating a rewinding device of the hologram transcribing apparatus according to an exemplary embodiment of the present invention.

Referring to fig. 1 and 5, the rewinding device 102 may include a protective film supply section 115, a cleaning section 116, and a finished film rewinding machine 117.

The hologram film HF on which the hologram has been recorded may be moved to the joining roller 501 and the joining roller 502.

The protective film supply section 115 may supply the protective film PF to the hologram film HF. In an embodiment, the protective film supply 115 may include two unwinder rollers. One roller may be rotated in a counterclockwise direction to attach the protective film PF to one surface of the hologram film HF. The other roller may be rotated in a clockwise direction to attach the protective film PF to the other surface of the hologram film HF. However, the embodiment of the present invention is not limited thereto, and the protective film supply part 115 may be variously deformed. The protective film PF may be substantially the same as or similar to the protective film described with reference to fig. 2.

Hereinafter, the hologram film HF with the protective film PF attached thereto is referred to as a finished film CPF.

The finished film CPF may be moved to the cleaning part 116 by the auxiliary roller. The cleaning section 116 may perform bleaching and curing operations on the finished film CPF. More specifically, the cleaning section 116 may perform the bleaching and curing operations on the finished film CPF by emitting light to the finished film CPF. In an embodiment, the light emitted from the cleaning part 116 may be Ultraviolet (UV) light. Through the bleaching and curing operations, polymer structures other than the crystal structure, which is oriented by the light energy remaining on the finished film CPF to cause diffraction at a specific wavelength, can be separated to enhance light transmittance, remove impurities, etc., and enhance durability of the finished film CPF.

The finished film CPF having passed through the cleaning section 116 may be moved through the auxiliary rollers and supplied to the finished film rewinder 117. The finished film rewinder 117 can rewind the finished film CPF. In an embodiment, the finished film rewinder 117 may include rollers. The finished film rewinder 117 can rewind the finished film CPF while rotating. The finished film CPF obtained by attaching the protective film PF to the hologram film HF on which the hologram has been recorded can be stored by the finished film rewinder 117.

Fig. 6 is a sectional view illustrating a hologram transcribing apparatus according to an exemplary embodiment of the present invention.

Referring to fig. 6, the hologram transcribing apparatus 1000 may include a photosensitive film unwinder 111, a protective film removing part 112, a light source part 113, an exposure part 114, a protective film supply part 115, a cleaning part 116, and a finished film rewinder 117. Since these components are connected in an organic manner, it is possible to realize the hologram transcription apparatus 1000 capable of batch control that performs a series of processes including: providing the photosensitive film SLF, removing the protective film PF, bringing the hologram film HF into close contact with the hologram original plate SSB, performing exposure using laser light, attaching the protective film PF, performing bleaching and curing processes, and winding the finished film CPF.

Fig. 7 is a sectional view illustrating an exposure part of a hologram transcription apparatus according to an exemplary embodiment of the present invention.

Hereinafter, for convenience of description, substantially the same or similar features as those described with reference to fig. 1 to 6 will be omitted.

Referring to fig. 7, the hologram film HF may be moved to the second roller R2 by the auxiliary roller 207 and the auxiliary roller 208. In an embodiment, the second roller R2 may include a third sub-roller SR3 and a fourth sub-roller SR 4. The hologram film HF is movable between the third sub-roller SR3 and the fourth sub-roller SR 4. More specifically, the third sub-roller SR3 and the fourth sub-roller SR4 may rotate in opposite directions to each other to move the hologram film HF toward the hologram original plate SSB. The hologram film HF may be moved to contact the hologram master SSB. More specifically, the hologram film HF may contact the second surface F2 of the hologram master SSB.

In a state where the hologram film HF contacts the second surface F2, the second contact roller AR2 may be moved such that the hologram film HF closely contacts the second surface F2. More specifically, the second contact roller AR2 may be moved in a direction parallel to the extending direction of the hologram original plate SSB in a state of contacting the hologram film HF as described in fig. 7. In an embodiment, the second contact roller AR2 may be moved in the extending direction of the hologram original plate SSB, or may be moved in the direction opposite to the extending direction of the hologram original plate SSB, so that the hologram film HF closely contacts the second surface F2. The hologram film HF may be disposed between the hologram original plate SSB and the second contact roller AR 2.

Since the second contact roller AR2 allows the hologram film HF to closely contact the hologram original plate SSB, it is possible to prevent bubbles and foreign substances from being introduced between the hologram original plate SSB and the hologram film HF. It is possible to prevent the transcription of the hologram from being distorted due to unnecessary deformation of the optical path or due to deformation of the light LL caused by scattering by bubbles and impurities. By allowing the hologram film HF to closely contact the hologram original plate SSB, the hologram film HF and the hologram original plate SSB can be moved in an integrated manner. It is possible to prevent a transcription distortion phenomenon of the hologram caused by each vibration. It is possible to improve the problem that the hologram film HF is deformed by the tension due to the repeated contact and separation with the hologram master SSB.

Fig. 8A is a sectional view illustrating a transcription principle of a hologram transcription apparatus according to an exemplary embodiment of the present invention.

Referring to fig. 8A, at a center point n where a central axis LLM of the third light LL3 intersects the hologram film HF, the central axis LLM and the hologram film HF may form a predetermined angle β. In an embodiment, the angle β may be 0 ° to 180 °.

In an embodiment, the third light LL3 may reach the entire first surface F1 of the hologram master SSB at the same time. The third light LL3 can uniformly reach the entire first surface F1 of the hologram master SSB. In an embodiment, the area irradiated with the third light LL3 may be larger than the area of the first surface F1.

In an embodiment, the exposure section 114 may further include a light shielding layer (not shown) that protects the hologram film HF from light. The light shielding layer may absorb light other than the third light LL3 that exposes the hologram film HF and the hologram master SSB.

A hologram may be recorded in the hologram film HF by the third light LL 3. More specifically, the third light LL3 may reach the first surface F1 of the hologram master SSB. A portion of this light may travel straight to transmit through the hologram master SSB and escape from the second surface F2. The linearly propagated light may reach the hologram film HF. Another part of this light may be diffracted at the hologram master SSB. The diffracted light can escape from the second surface F2. The diffracted light can reach the hologram film HF. The propagation direction of the diffracted light may be different from the propagation direction of the light propagating straight. In an embodiment, the propagation direction of the diffracted light may form an angle of 0 ° to 180 ° with the propagation direction of the linearly propagated light. The diffracted light may interfere with light traveling straight at the hologram film HF. The interference pattern of these two lights can be recorded in the hologram film HF. The hologram film HF on which the interference pattern of light has been recorded may become a hologram. The hologram film HF on which the interference pattern of light has been recorded may be a transmission type hologram. The interference pattern recorded in the hologram film HF may be substantially the same as or similar to the interference pattern recorded in the hologram master SSB.

The hologram film HF on which the hologram has been recorded can be moved to the joining roller 501 and the joining roller 502 by the auxiliary roller 209 and the auxiliary roller 210.

Fig. 8B is a sectional view illustrating an operation process of the hologram transcribing apparatus according to an exemplary embodiment of the present invention.

Referring to fig. 8B, the exposure section 114 may rotate. In an embodiment, the exposure section 114 may rotate in a clockwise direction and/or a counterclockwise direction. More specifically, the exposure section 114 may rotate about the center point n. When the exposure section 114 rotates, the hologram original plate SSB and the hologram film HF may also rotate. The central axis LLM and the hologram film HF may form a predetermined angle β' at the central point n. The angle β and the angle β' may be different from each other.

The rotation of the exposure section 114 may be performed by various units. In an embodiment, the exposure section 114 may be rotated by a rotation axis connected to the center point n. The rotating shaft may be directly/indirectly connected to a motor or the like capable of rotating the rotating shaft. In the embodiment, the exposure section 114 may be rotated by various units capable of rotating the exposure section 114.

When the exposure section 114 rotates, the irradiation angle of the third light LL3 reaching the hologram film HF and the hologram original plate SSB may be changed in various ways. Various interference patterns of this light can be recorded in the hologram film HF. Various transmission holograms can be manufactured.

According to the hologram transcription apparatus 1000 according to an embodiment of the present invention, since the exposure part 114 is rotated to change the irradiation angle of light, it is possible to manufacture holograms at various angles by using one hologram transcription apparatus 1000. Since the exposure section 114 is moved, the light source section 113 may not necessarily be moved. In order to rotate the light source section 113, the light source 1131, the filter 1133, and/or the mirror 1135 may not necessarily move. The realignment operation of the light based on the rotation of the light source section 113 may be omitted. The process of manufacturing the hologram can be simplified and rapidly performed. The manufacturing cost of the hologram can be reduced.

The hologram transcription apparatus 1000 according to an embodiment of the present invention may include all of the first and second rollers R1 and R2. One hologram transcription apparatus 1000 can selectively perform a process of recording a hologram by reflecting light LL by the hologram master SSB and a process of recording a hologram by transmitting light LL by the hologram master SSB. Both the reflection-type hologram and the transmission-type hologram may be manufactured by one hologram transcription apparatus 1000. Several transcription devices may not be required to provide the various holograms. The process of manufacturing the hologram can be simplified and rapidly performed. The manufacturing cost of the hologram can be reduced.

Fig. 9 is a sectional view illustrating a supply device of a hologram transcription apparatus according to an exemplary embodiment of the present invention.

Hereinafter, for convenience of description, substantially the same or similar features as those described with reference to fig. 1 to 8B will be omitted.

Referring to fig. 9, the exposure part 114 may extend in a horizontal direction. That is, the hologram master SSB may be disposed substantially parallel to the ground. The hologram film HF can be moved parallel to the ground. The light source unit 113 may irradiate light from the top to the bottom.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is to be understood that the present invention should not be limited to these embodiments but various changes and modifications can be made by one of ordinary skill in the art within the spirit and scope of the present invention as hereinafter claimed. Accordingly, the disclosed embodiments are to be considered in all respects as illustrative and not restrictive.