KR101953318B1 - Manufacturing equipment of light path conversion film - Google Patents

Manufacturing equipment of light path conversion film Download PDF

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Publication number
KR101953318B1
KR101953318B1 KR1020120028488A KR20120028488A KR101953318B1 KR 101953318 B1 KR101953318 B1 KR 101953318B1 KR 1020120028488 A KR1020120028488 A KR 1020120028488A KR 20120028488 A KR20120028488 A KR 20120028488A KR 101953318 B1 KR101953318 B1 KR 101953318B1
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KR
South Korea
Prior art keywords
light
conversion film
light conversion
spatial filter
incident
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KR1020120028488A
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Korean (ko)
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KR20130106728A (en
Inventor
윤민성
김선우
신민영
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엘지디스플레이 주식회사
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Publication of KR20130106728A publication Critical patent/KR20130106728A/en
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Abstract

The present invention relates to a manufacturing apparatus of a light conversion film that can minimize the size. Equipment for manufacturing a light conversion film according to an embodiment of the present invention is a light source for irradiating light; A beam splitter for distributing light incident from the light source into n (n is a natural number of two or more); A first spatial filter converting any one of the light distributed from the beam splitter into diffused light; A second spatial filter for converting another light among the light distributed from the beam splitter into diffused light; A first collimator converting the diffused light incident from the first spatial filter into a first parallel linear light; A second collimator for converting the diffused light incident from the second spatial filter into a second parallel straight light parallel to the first parallel straight light; And a light conversion film in which a light conversion pattern for converting the second parallel straight light into a third parallel straight light having a path different from the path by a predetermined angle is recorded.

Description

Manufacturing Equipment of Light Conversion Film {MANUFACTURING EQUIPMENT OF LIGHT PATH CONVERSION FILM}

The present invention relates to a manufacturing equipment of the light conversion film.

Recently, researches on three-dimensional (3D) image and image reproduction technology have been actively conducted. 3D image related media is expected to lead the next generation of image devices as a new concept of realistic image media that raises the level of visual information. Conventional 2D imaging systems provide planar images, but 3D imaging systems are the ultimate image rendering technology in view of showing the actual image information of objects to the viewer.

As a method for reproducing a 3D stereoscopic image, it is largely divided into a binocular parallax and an autostereoscopic method. The binocular parallax method uses a parallax image of the left and right eyes with a large stereoscopic effect, and there are glasses and no glasses, both of which are put to practical use. Recently, a method of realizing a 3D image by converging a left eye image to a user's left eye and a right eye image to a user's right eye using a light conversion film that converts an optical path in an autostereoscopic method has been recently proposed. To this end, a light path pattern in which the first light is output as the second light when the first light is incident and the first light is output when the second light is incident should be formed in the light conversion film. By the way, the conventional manufacturing equipment of the optical conversion film is to separate the laser light into the first light and the second light in order to record the optical path pattern on the light conversion film, and then the second light by using a mirror (mirror) There is a problem that the size is large because it reflects so as to be different by a predetermined angle and enters the recording medium. In particular, the larger the predetermined angle which is the incident angle between the first light and the second light, the larger the manufacturing equipment of the light conversion film becomes.

The present invention provides an apparatus for manufacturing a light conversion film that can minimize the size.

Equipment for manufacturing a light conversion film according to an embodiment of the present invention is a light source for irradiating light; A beam splitter for distributing light incident from the light source into n (n is a natural number of two or more); A first spatial filter converting any one of the light distributed from the beam splitter into diffused light; A second spatial filter for converting another light among the light distributed from the beam splitter into diffused light; A first collimator converting the diffused light incident from the first spatial filter into a first parallel linear light; A second collimator for converting the diffused light incident from the second spatial filter into a second parallel straight light parallel to the first parallel straight light; And a light conversion film in which a light conversion pattern for converting the second parallel straight light into a third parallel straight light having a path different from the path by a predetermined angle is recorded.

The present invention reflects the second parallel linear light so as to be parallel to the first parallel linear light, and converts the optical path of the second parallel linear light using a light conversion film to be different from the first parallel linear light by a predetermined angle. 3 Parallel straight light is incident on the recording medium. As a result, the present invention can minimize the size of the manufacturing equipment of the light conversion film.

In addition, the present invention records the optical path pattern on the recording medium while moving the light conversion film on the moving table using a roller. As a result, the present invention can produce a large-size light conversion film, it is possible to reduce the process time.

Furthermore, the present invention coats the recording medium on the transparent substrate and then records the optical path pattern on the recording medium. As a result, the present invention does not need to coat the recording medium on the transparent substrate after recording the optical path pattern, thereby solving the problem of lowering the uniformity of the optical path pattern due to pressure in the lamination process.

1 is a cross-sectional view showing a light conversion film according to an embodiment of the present invention.
2a to 2c is an exemplary view showing the optical path conversion of the light conversion film.
3a to 3c are exemplary views showing the optical path conversion of the light conversion film.
4 is a flowchart illustrating a method of manufacturing a light conversion film according to an embodiment of the present invention.
5 is a view showing the manufacturing equipment of the light conversion film according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Like numbers refer to like elements throughout. In the following description, when it is determined that a detailed description of known functions or configurations related to the present invention may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. Component names used in the following description may be selected in consideration of ease of specification, and may be different from actual product part names.

1 is a cross-sectional view showing a light conversion film according to an embodiment of the present invention. Referring to FIG. 1, the light conversion film 100 according to the embodiment of the present invention includes a transparent substrate 101, a polyethylene terephthalate (PET) film 102, a recording medium 103, and a cover film 104. do.

The transparent substrate 101 may be formed of a transparent plastic substrate such as polycarbonate or a glass substrate. The PET film 102 is formed on the transparent substrate 101 to enhance heat resistance, electrical properties, resistance, and the like. The recording medium 103 is formed on the PET film 102, and the optical path pattern is recorded. The optical path pattern formed on the recording medium 103 will be described in detail with reference to Figs. 2A to 2C. The recording medium 103 may be formed of a photopolymer. The cover film 104 is formed on the recording medium 103 to protect the recording medium 103. Meanwhile, in the light conversion film 100, the PET film 102 and the cover film 104 may be omitted.

2A to 2C are exemplary views illustrating the optical path conversion of the light conversion film. FIG. 2A shows a first light L1 and a second light L2 incident on the light conversion film 100 to record a light path pattern, and FIGS. 2B and 2C show a light conversion in which the light path pattern is recorded. When each of the first light L1 and the second light L2 is incident on the film 100, output light is shown.

The first light L1 and the second light L2 are incident to the recording medium 103 of the light conversion film 100 to record the optical path pattern as shown in FIG. 2A. The first light L1 and the second light L2 are incident to each other by a predetermined first angle θ1. The optical path pattern formed by the first light L1 and the second light L2 is recorded in the recording medium 103. When the first light L1 is incident on the recording medium 103 as shown in FIG. 2B, the first light L1 is output as the second light L2 by the light path pattern formed on the recording medium 103. Also, as shown in FIG. 2C, when the second light L2 is incident on the recording medium 103, the second light L2 is output to the first light L1 by the light path pattern formed on the recording medium 103. do. As a result, when the first light L1 is incident on the recording medium 103, the first light L1 is diffracted by the recording medium 103 and output as light parallel to the second light L2. When the second light L2 is incident on the 103, the second light L2 is diffracted by the recording medium 103 and output as light parallel to the first light L1.

2A to 2C, the first light L1 and the second light L2 are parallel straight light. However, the first light L1 and the second light L2 are not limited to the parallel straight light, but may be divergent light or convergent light. For example, when the optical path pattern is recorded on the recording medium 103 using the third light L3 that is the parallel straight light and the fourth light L4 that is the divergent light, as shown in FIG. The third light L3 is output as the fourth light L4 that is the converging light, and the fourth light L4 that is the diverging light is output as the third light L3 as the parallel straight light as shown in FIG. 3C.

4 is a flowchart illustrating a method of manufacturing a light conversion film according to an embodiment of the present invention. Referring to FIG. 4, the method of manufacturing the light conversion film according to the embodiment of the present invention includes first to fifth steps S101 to S105.

The first step S101 is to coat the PET film 102 on the transparent substrate 101. The PET film 102 may be coated on the transparent substrate 101 by a lamination process of applying a uniform pressure using a roller.

The second step S102 is to coat the recording medium 103 on the PET film 102. The recording medium 103 may be formed of a photopolymer. The recording medium 103 may be coated on the PET film 102 by a lamination process.

The third step S103 is to coat the cover film 104 on the recording medium 103. The cover film 104 may be coated on the recording medium 103 by a lamination process.

The fourth step S104 is a step of recording the optical path pattern in the recording medium 103. The optical path pattern can be formed by superimposing n (n is a natural number of two or more) lights on the recording medium 103, which differ by a predetermined angle as shown in FIG. 2A. In FIG. 2A, the superposition of two lights on the recording medium 103 has been described as an example, but the present invention is not limited thereto. The manufacturing equipment of the light conversion film for recording the optical path pattern on the recording medium 103 will be described in detail with reference to FIG. 5.

The fifth step S105 is a step of curing the recording medium 103 on which the optical path pattern is recorded with ultraviolet (UV) rays. If the recording medium 103 on which the optical path pattern is recorded is not cured by ultraviolet rays, the recording medium 103 is restored to its original state, and thus, the recording medium 103 is cured by using the ultraviolet rays. Is needed.

As described above, the present invention coats the recording medium 103 on the transparent substrate 101 and then records the optical path pattern on the recording medium 103. Therefore, the present invention does not need to coat the recording medium 103 on the transparent substrate 101 after recording the optical path pattern as in the prior art, and thus lamination for coating the recording medium 103 on the transparent substrate 101. Due to the pressure in the process, it is possible to solve the problem that the uniformity of the light path pattern is lowered.

5 is a view showing the manufacturing equipment of the light conversion film according to an embodiment of the present invention. Referring to FIG. 5, an apparatus for manufacturing a light conversion film according to an exemplary embodiment of the present invention includes a light source 10, a shutter 20, a beam splitter 30, a mirror 40, and a first And a second spatial filter 50 and 60, first and second collimators 70 and 80, an optical conversion film 90 on which the optical path patterns are recorded, and an optical conversion film for recording the optical path patterns ( 110, a moving table 120, a rotating roller 130, and a polarization converting device 140.

The light source 10 irradiates light to the beam splitter 30. The light source 10 may be implemented to irradiate a laser. Since the laser is strong in intensity, has one color, transmits far away with little change in diameter, and emits highly coherent light, recording the interference information of the light onto the recording medium 103 of the light conversion film 100. It is the most suitable light.

The shutter 20 blocks light incident on the beam splitter 30 from the light source 10. When the shutter 20 is opened, the light irradiated from the light source 10 is incident on the beam splitter 30. When the shutter 20 is closed, the light irradiated from the light source 10 is blocked, so that no light is incident on the beam splitter 30.

The beam splitter 30 distributes the light incident from the light source 10 into n pieces. For example, the beam splitter 30 distributes the light incident from the light source 10 to the mirror 40 and the first spatial filter 50 as shown in FIG. 5. On the other hand, the light distributed to the mirror 40 by the beam splitter 30 and the light distributed to the first spatial filter 50 have different polarization characteristics. For example, the light distributed to the mirror 40 by the beam splitter 30 may have a characteristic of vertical polarization, and the light distributed to the first spatial filter 50 may have a characteristic of horizontal polarization. Therefore, the polarization characteristics of the light distributed by the beam splitter 30 can be matched by changing the polarization characteristics of the light distributed by the first spatial filter 50. Between the polarization converter 140 may be disposed.

The mirror 40 reflects the light distributed from the beam splitter 30 to the second spatial filter 60. In particular, the mirror 40 reflects the light distributed from the beam splitter 30 so that the light incident on the first spatial filter 50 and the light incident on the second spatial filter 60 are parallel to each other.

The first and second spatial filters 50 and 60 diffuse incident light. The first spatial filter 50 converts the light passing through the polarization converter 140 among the light distributed from the beam splitter 30 into diffused light. The second spatial filter 60 converts the light incident through the mirror 40 into incident light. That is, another of the light distributed from the beam splitter 30 is converted into diffused light by the second spatial filter 60 after passing through the mirror 40. The light diffused by the first spatial filter 50 is incident on the first collimator 70, and the light diffused by the second spatial filter 60 is incident on the second collimator 80.

The first and second collimators 70 and 80 convert the incident diffused light into parallel straight light. The first collimator 70 converts the diffused light incident from the first spatial filter 50 into the first parallel straight light PL1. The second collimator 80 converts the diffused light incident from the second spatial filter 60 into the second parallel straight light PL2. The first parallel straight light PL1 output from the first collimator 70 and the second parallel straight light PL2 output from the second collimator 80 are parallel to each other.

The light conversion film 90 in which the light path pattern is recorded converts the light path of the second parallel straight light PL2 output from the second collimator 80. The light conversion film 90 in which the light path pattern is recorded converts the light path of the incident second parallel straight light PL2 as described with reference to FIGS. 2A to 2C. That is, when the second parallel straight light PL2 is incident as shown in FIG. 5, the light conversion film 90 having the optical path pattern recorded therein differs from the path of the second parallel straight light PL2 by a predetermined angle θ. Outputs a third parallel straight light PL3 having a path.

The light conversion film 110 for recording the light path pattern is placed on the moving table 120. The first parallel linear light PL1 and the third parallel linear light PL3 are incident on the light conversion film 110 for recording the optical path pattern. In particular, the first parallel straight light PL1 and the third parallel straight light PL3 are incident to each other by a predetermined angle θ. Therefore, the light path pattern is recorded on the recording medium of the light conversion film 110 for recording the light path pattern. The light conversion film 110 in which the light path pattern is recorded is moved to an ultraviolet curing device (not shown) by the moving table 120 for ultraviolet curing of the light path pattern.

Conventional equipment for manufacturing a light conversion film, as shown in the dotted line of Figure 5 by the reflection of the mirror (40 ') made a parallel linear light that is different from the first parallel linear light PL1 by a predetermined angle (θ). For this reason, there is a disadvantage that the size of the conventional manufacturing equipment of the light conversion film is inevitably large. However, according to the present invention, the second parallel linear light PL2 is reflected using the light conversion film 90 reflecting the second parallel linear light PL2 so as to be parallel to the first parallel linear light PL1 and the optical path pattern is recorded. ) Is converted into the recording medium by the third parallel straight light PL3 which is different from the first parallel straight light PL1 by a predetermined angle. As a result, the present invention can significantly reduce the size of the manufacturing equipment of the light conversion film compared to the conventional.

In addition, since the rotating roller 130 may move the moving table 120, the present invention records the light path pattern while moving the light conversion film 110 for recording the light path pattern on the moving table 120. . As a result, the present invention not only can produce a light conversion film in which a light path pattern is recorded in a large size, but also has an advantage of reducing process time.

As described above, those skilled in the art will appreciate that various changes and modifications can be made without departing from the technical spirit of the present invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims.

10: light source 20: shutter
30: beam splitter 40: mirror
50: first space filter 60: second space filter
70: first collimator 80: second collimator
90: photoconversion film in which photoconversion pattern is recorded
100: light conversion film 101: transparent substrate
102: PET film 103: recording medium
104: cover film
110: light conversion film for recording the light conversion pattern
120: moving table 130: rotary roller
140: polarization converter

Claims (10)

  1. A light source for irradiating light;
    A beam splitter for distributing light incident from the light source into n (n is a natural number of two or more);
    A first spatial filter converting any one of the light distributed from the beam splitter into diffused light;
    A second spatial filter for converting another light among the light distributed from the beam splitter into diffused light;
    A mirror for reflecting any one light or another light distributed from the beam splitter such that light incident on the first spatial filter and light incident on the second spatial filter are parallel to each other;
    A first collimator converting the diffused light incident from the first spatial filter into a first parallel linear light;
    A second collimator for converting the diffused light incident from the second spatial filter into a second parallel straight light parallel to the first parallel straight light;
    A light conversion film in which a light conversion pattern for converting the second parallel straight light into a third parallel straight light having a path different from the path by a predetermined angle is recorded; And
    And a polarization converter disposed between the beam splitter and the first spatial filter to change polarization characteristics of any one of the light split from the beam splitter.
  2. The method of claim 1,
    And the first parallel linear light and the third parallel linear light are incident on the light conversion film for recording the light conversion pattern to be different by the predetermined angle.
  3. The method of claim 2,
    Each of the light conversion film on which the light conversion pattern is recorded and the light conversion film for recording the light conversion pattern,
    Transparent substrates; And
    And a recording medium formed on the transparent substrate and recording the light conversion pattern.
  4. The method of claim 3, wherein
    And the recording medium is a photopolymer.
  5. The method of claim 3, wherein
    Each of the light conversion film on which the light conversion pattern is recorded and the light conversion film for recording the light conversion pattern,
    A PET film formed between the transparent substrate and the recording medium; And
    And a cover film formed on the recording medium to protect the recording medium.
  6. The method of claim 1,
    The light source is the equipment for manufacturing a light conversion film, characterized in that for irradiating a laser.
  7. delete
  8. The method of claim 2,
    A moving table on which a light conversion film for recording the light conversion pattern is placed; And
    Equipment for manufacturing a light conversion film further comprising a rotating roller for moving the moving table.
  9. The method of claim 8,
    And an ultraviolet curing device for ultraviolet-curing the photoconversion pattern after the recording of the photoconversion pattern is completed on the photoconversion film for recording the photoconversion pattern placed on the moving table.
  10. delete
KR1020120028488A 2012-03-20 2012-03-20 Manufacturing equipment of light path conversion film KR101953318B1 (en)

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KR1020120028488A KR101953318B1 (en) 2012-03-20 2012-03-20 Manufacturing equipment of light path conversion film

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KR101953318B1 true KR101953318B1 (en) 2019-02-28

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005010585A (en) * 2003-06-20 2005-01-13 Tdk Corp Holographic optical element, its manufacturing method, and holographic recording system
JP2009020134A (en) * 2007-07-10 2009-01-29 Sharp Corp Hologram element, hologram element fabricating apparatus, hologram element fabricating method and hologram reproducing apparatus

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH059028B2 (en) * 1986-03-07 1993-02-03 Nippon Electric Co
JPH1020749A (en) * 1996-07-05 1998-01-23 Dainippon Printing Co Ltd Hologram recording film

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005010585A (en) * 2003-06-20 2005-01-13 Tdk Corp Holographic optical element, its manufacturing method, and holographic recording system
JP2009020134A (en) * 2007-07-10 2009-01-29 Sharp Corp Hologram element, hologram element fabricating apparatus, hologram element fabricating method and hologram reproducing apparatus

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