KR102075158B1 - Manufacturing method of hologram lighting device for multi-light source using LED and Method for representation of hologram image using that device - Google Patents

Manufacturing method of hologram lighting device for multi-light source using LED and Method for representation of hologram image using that device Download PDF

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KR102075158B1
KR102075158B1 KR1020180125730A KR20180125730A KR102075158B1 KR 102075158 B1 KR102075158 B1 KR 102075158B1 KR 1020180125730 A KR1020180125730 A KR 1020180125730A KR 20180125730 A KR20180125730 A KR 20180125730A KR 102075158 B1 KR102075158 B1 KR 102075158B1
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South Korea
Prior art keywords
hologram
light source
mounting plate
w1
holographic
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KR1020180125730A
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Korean (ko)
Inventor
옥광호
김대현
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주식회사 미래기술연구소
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    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03HHOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00Holographic processes or apparatus using light, infra-red or ultra-violet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/22Processes or apparatus for obtaining an optical image from holograms
    • G03H1/2294Addressing the hologram to an active spatial light modulator
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03HHOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00Holographic processes or apparatus using light, infra-red or ultra-violet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/22Processes or apparatus for obtaining an optical image from holograms
    • G03H1/2286Particular reconstruction light ; Beam properties
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03HHOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H2223/00Optical components
    • G03H2223/23Diffractive element

Abstract

According to the present invention, first and second ends of the hologram film F1 may be disposed at both outermost sides of the first special filter 13 in the solid angle W1 and the N first special filters 13. 13) mounting the hologram film (F1) to the mounting plate 15 to be located inside each solid angle W1; Of the light generated by the laser light source 11, the object light O is incident on the hologram film F1 by overlapping S1 in the adjacent region by each of the N first special filters 13 each having a solid angle W1. The reference light R is incident on the hologram film F1 through the second special filter 14 having the solid angle W2 (> W1), thereby manufacturing the hologram illuminating means F2 having the interference fringe formed thereon; Hologram lighting device comprising N LED light sources 21 and first and second mounting plates 22 and 23 which are composed of a plurality of main wavelengths and divergence angles each having λ1 and W1 and are arranged to overlap S1 in adjacent areas. Preparing a; Placing the hologram lighting means (F2) on the upper surface of the first mounting plate (22) and placing the holographic image film (1) on the second mounting plate (23); By operating the N LED light sources 21, the light generated in each LED light source 21 is emitted to W1 and the hologram image film (1) through the hologram lighting means (F2) in the state overlapping by S1 in the adjacent area. It provides a holographic illumination means for the multi-light source comprising a; and reproducing the holographic image is irradiated) and a method of reproducing the holographic image using the same.

Description

Manufacturing method of hologram lighting device for multi-light source using LED and Method for representation of hologram image using that device}

The present invention relates to the production of a hologram lighting means and a method for reproducing a holographic image using the same, and more particularly, a diffraction optical element which is a hologram lighting means so that a plurality of LED light sources having a low light quantity can function like a single reproduction light source. The present invention relates to a method for producing a hologram image and using the same.

The most widely used means of illumination of holograms are lasers and laser diodes, and products with various outputs corresponding to various sizes of holograms are being released, but the price itself is expensive and can not cause serious injury to the human eye. There was a limit to popularization.

As an alternative to this, the related industry considers LEDs. LEDs have advantages in that they are relatively inexpensive compared to lasers and have little harm to the human body. there is a problem.

In order to increase the light quantity of the LED, the LED must be configured by a chip on board (COB) method or a plurality of LEDs. In the former case, the uniformity of light is deteriorated. In the latter case, due to a plurality of light sources, The hologram image also has a problem that it is impossible to play a clear hologram image in that a plurality of overlapping.

Republic of Korea Patent No. 0442820 Republic of Korea Patent No. 0999576 Republic of Korea Patent No.1869495

The present invention has been proposed to improve the problems of the prior art, and an object of the present invention is to reproduce a holographic image using hologram lighting means composed of a plurality of LED light sources and diffractive optical elements acting as a single light source. The purpose is to provide a method.

In order to achieve the above object, the present invention provides a laser light source 11 having a wavelength λ1, an optical separator 12 positioned at a predetermined distance from the laser light source 11, and a predetermined distance away from one side of the optical separator 12. N first special filters 13 each having a solid angle W1 and disposed so as to overlap S1 in an adjacent region, and a second special filter 14 having a solid angle W2 positioned at a predetermined distance away from the optical separator 12 in the other direction. Preparing an optical system including a mounting plate 15 facing each of the first special filter 13 and the second special filter 14; Preparing a hologram film F1 having horizontal and vertical lengths of L1 and L2 (L2 > L1), respectively; Both end portions of the horizontal portion of the hologram film F1 are positioned inside the solid angle W1 of each of the first special filters 13, and both end portions of the vertical portion of the hologram film F1 are disposed at the outermost sides of the N first special filters 13. Mounting the hologram film F1 on the mounting plate 15 so as to be positioned inside the solid angle W1 of each of the first special filters 13 positioned thereon; The light generated by operating the laser light source 11 is separated into the object light O and the reference light R by the optical separator 12, and the separated object light O has N first pieces each having a solid angle W1. Each of the special filters 13 is overlapped by S1 in the adjacent area and enters the hologram film F1, and the separated reference light R is hologramd through the second special filter 14 having a solid angle W2 (W2> W1). Incident to the film F1 to produce a hologram illuminating means F2 having an interference fringe formed thereon; N LED light sources 21, which are composed of a plurality of main wavelengths and divergence angles each having λ1 and W1, and are disposed to overlap each other by S1 in an adjacent region, and are disposed at a predetermined distance from the LED light source 21. ), Preparing a hologram lighting device having a second mounting plate 23 positioned at one side of the first mounting plate 22 and disposed to be inclined at an angle with the first mounting plate 22; Placing the hologram lighting means (F2) on the upper surface of the first mounting plate (22) and placing the holographic image film (1) on the second mounting plate (23); By operating the N LED light sources 21, the light generated from each LED light source 21 is emitted to W1 and the hologram image film (1) through the hologram lighting means (F2) in a state overlapped by S1 in the adjacent area. Reproducing the holographic image is irradiated with); characterized in that it comprises a technical feature.

The object light (O) is incident on the front portion of the hologram film (F1), and the reference light (R) is incident on the rear portion of the hologram film (F1) to produce reflective holographic lighting means; The first mounting plate 22 is located at a predetermined distance above the LED light source 21, and the light generated from each LED light source 21 is fixed to the hologram lighting means F2 placed on the first mounting plate 22. The hologram image may be reproduced by being reflected at an angle and penetrating the holographic image film 1.

In addition, each of the object light (O) and the reference light (R) is incident to the front portion of the hologram film (F1) to produce a transmissive hologram lighting means; The LED light source 21 is located a predetermined distance away from the upper side of the first mounting plate 22, the light generated from each LED light source 21 is hologram lighting means (F2) and the hologram placed on the first mounting plate (22) The hologram image may be reproduced by sequentially transmitting each of the image films 1.

The present invention proposes a method in which a plurality of LED light sources can function as a single regenerated light source, thereby making it possible to manufacture a hologram reproducing device having excellent dissemination without any risk to the eye, and the number and emission of LED light sources. By arbitrarily adjusting the angle, it is possible to reproduce a large hologram image very easily as a device having a minimum volume.

1 is a schematic configuration diagram of a device for manufacturing reflective holographic lighting means as an example according to the present invention;
Figure 2 is a schematic diagram of a device for manufacturing a transmission hologram lighting means as another example according to the present invention.
Figure 3a is a schematic front configuration diagram of a device for reproducing a holographic image using the reflective holographic lighting means made in accordance with FIG.
Figure 3b is a schematic cross-sectional configuration of the device for reproducing the holographic image using the reflective holographic lighting means made in accordance with FIG.
Figure 4a is a schematic front configuration diagram of a device for reproducing a holographic image using the transmission hologram lighting means made in accordance with FIG.
Figure 4b is a schematic cross-sectional view of a device for reproducing the holographic image using the transmission hologram lighting means made in accordance with FIG.

Preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings, in which the embodiments of the present invention are not directly related to the technical features of the present invention, or in the art to which the present invention pertains. The detailed description of the matters apparent to those with knowledge of the present invention will be omitted.

The present invention relates to a method for manufacturing a hologram lighting means for a multi-LED light source, and to reproduce the image of the hologram using the same, comprising preparing an optical system and a hologram film (F1), mounting a hologram film (F1), and hologram lighting means ( F2) the production step, the holographic illumination device preparation step, holographic lighting means (F2) and holographic image film (1) mounting step, holographic image playback step characterized in that it comprises a step. Each of these steps is described below.

First, an optical system is constructed. An optical system according to the present invention is a device for recording a hologram lighting means (F2), comprising a laser light source 11, a light separator 12, the first, second special filters (13, 14), the mounting plate (15) do.

The laser light source 11 has a wavelength λ1. The wavelength of the laser light source 11 considers the LED light source 21 mentioned later, It is preferable that the wavelength (lambda) 1 of the laser light source 11 consists of any one of the commercially available LED wavelengths. Reference numeral 111 is a reflecting mirror.

The optical splitter 12 is a means for separating the light generated by the laser light source 11 into the object light O and the reference light R, and is located at a distance from the laser light source 11. Reference numeral 112 denotes a shutter located on the optical path of the light source generated by the laser light source 11.

The first special filter 13 is a means for removing noise in the object light and converting the object light into a solid angle having a predetermined size. The first special filter 13 is positioned at a distance away from one side of the optical separator 12. In this case, the present invention proposes a configuration in which the first special filter 13 has a solid angle W1 as shown in the figure, and is composed of N pieces arranged to overlap as much as S1 in an adjacent region.

The solid angle W1 of each of the first special filters 13 is a portion corresponding to the divergence angle of the LED light source 21 and may vary according to the size of the hologram film F1 to be described later. In addition, the reason why the N first special filters 13 are configured to overlap in the adjacent region among the object lights irradiated is to irradiate the object light to the entire area of the hologram film F1. Reference numeral 131 denotes an optical separator that separates and irradiates the object light O irradiated and separated from the optical separator 12, and reference numeral 132 denotes a reflection mirror.

The second special filter 14 is a means for removing noise in the reference light and converting the object light into a solid angle having a predetermined size. The second special filter 14 is positioned at a distance apart from the other side of the optical separator 12. It is preferable that the second special filter 14 has a single configuration having a solid angle W2 (W2 > W1). This is to produce one diffracted optical element by fabricating a diffraction optical element with N object light and one reference light, and then simultaneously inputting N LED light sources to be described later to the diffraction optical element. Reference numeral 142 denotes a parallel optical lens.

The mounting plate 15 is a portion on which the hologram film F1 is mounted, and faces the N first special filters 13 and one second special peter 14, respectively. In this case, the position of the second special filter 14 is irradiated to the rear portion or the front portion of the mounting plate 15 by the object light (R) as shown in Figs. Hologram luminaires can be manufactured.

When the optical system is configured, the hologram film F1 is prepared. The hologram film F1 according to the present invention is not particularly limited in shape, but in view of the convenience of production and reproduction, the hologram film F1 preferably has a rectangular shape consisting of L1 and L2 (L2 > L1), respectively. .

When the hologram film F1 is prepared, it is mounted on the mounting plate 15 of the optical system. At this time, the horizontal both ends of the hologram film F1 mounted on the mounting plate 15 are positioned inside the solid angle W1 of each of the first special filters 13, and the vertical both ends of the hologram film F1 are N first portions. The special filter 13 is adjusted to be located inside the solid angle W1 of each of the first special filters 13 positioned at the outermost sides of the special filter 13.

That is, the horizontal both ends of the hologram film F1 must enter the illumination area of the object light O incident on the front surface of the hologram film F1 through the solid angle W1 of the first special filter 13, and both outermost sides Vertical both ends of the hologram film F1 inside the illumination area of the object light O incident on the front surface of the hologram film F1 through the solid angle W1 of each of the first special filters 13 positioned on the upper and lower sides of the drawing. Let go.

The relationship between the first special filter and the hologram film may be adjusted in consideration of the solid angle size of the first special filter and the size of the hologram film, respectively, and may also be adjusted by changing the distance between the first special filter and the mounting plate. will be.

When the hologram film F1 is mounted on the mounting plate 15, an interference fringe is recorded on the hologram film F1 using the prepared optical system. Interference fringe recording on the hologram film F1 may be performed as follows.

The laser light source 11 is turned on by the operation of the control device, not shown. When light is generated by the operation of the laser light source 11, the generated light is separated into the object light O and the reference light R while passing through the optical separator 12, and the object light O is separated from the separated light. The incident light enters the first special filter 13 through the separator 131 and the reflecting mirror 132, and the reference light R enters the second special filter 14 through the reflecting mirror 141. .

Since the first special filter 13 is composed of N pieces, the object light O is divided into N pieces, and then converted into a solid angle W1 through each of the first special filters 13 to be incident on the hologram film F1. The object light R incident on the two special filters 14 is converted into the solid angle W2 and then incident on the hologram film F1.

In this case, when the hologram film F1 is reflective as shown in FIG. 1, the object light O is incident on the front surface of the hologram film F1 and the reference light R is incident through the rear surface of the hologram film F1. When the hologram film F2 is transmissive as shown in FIG. 2, the object light O and the reference light R enter together through the entire surface of the hologram film F1.

As the object light O and the reference light R enter the hologram film F1, an interference fringe is recorded on the hologram film F, and the post-work is appropriately processed to complete the hologram illuminating means F2. The hologram luminaire F2 produced according to the invention constitutes a typical diffractive optical element.

Then prepare the hologram lighting device. The hologram lighting apparatus according to the present invention may have a box structure as shown in FIGS. 3A to 4D, and includes an LED light source 21 and first and second mounting plates 22 and 23.

The LED light sources 21 are composed of N spaced apart from each other by a predetermined interval, and the main wavelength of each LED light source 21 has the same lambda 1 as the wavelength of the laser light source 11 and the divergence angle of each LED light source 21 at the same time. Is preferably configured to have the same W1 as the solid angle of the first special filter 13, and the light irradiated from the LED light source 21 is preferably arranged to overlap S1 in the adjacent region.

The first mounting plate 22 is a means for supporting the holographic lighting means (F2), it is located a certain distance away from the LED light source (21). The second mounting plate 23 is a means for supporting the holographic image film 1 and is positioned on one side of the first mounting plate 22 and is inclined at a predetermined angle with the first mounting plate 22. Each of the first and second mounting plates 22 and 23 may have a slit structure in which a central portion is opened, or a transparent plate-like structure.

At this time, when the hologram lighting means (F2) is a reflective type manufactured according to FIG. 1, the LED light source 21 is positioned at a predetermined distance away from the center of the first mounting end 22 vertically as shown in FIGS. 3A and 3B, respectively. In the case where the hologram lighting means F2 is a transmission type manufactured according to FIG. 2, the LED light source 21 is positioned at a predetermined distance vertically upward from the center of the first mounting end 22 as shown in FIGS. 4A and 4B, respectively. do.

When the hologram lighting device is prepared, the hologram lighting means F2 is placed on the upper surface of the first mounting plate 22, and the holographic image film 1 is positioned on the second mounting plate 23. The hologram image film 1 may be made of a typical hologram in which an arbitrary image is recorded on a hologram recording material such as a film.

Subsequently, the switches not shown are turned on to operate each of the LED light sources 21. When the N LED light sources 21 are operated, the light generated in each LED light source 21 is incident on the hologram luminaire F2 as shown in the drawing, and then reflected on the surface of the hologram luminaire F2 (reflected as a reflection type). 3A and 3B) or through the hologram illuminating means F2 (Figs. 4A and 4B as a transmissive type) and enter the holographic image film 1.

At this time, the LED light source 21 is composed of N, like the laser light source 11, the main wavelength of each of the LED light source 21 is the same as the wavelength of the laser light source 11, each divergent angle of the LED light source 21 Since is the same as the solid angle of the light irradiated through the first special filter 13, the image (H) recorded on the holographic image film (1) is reproduced while passing through the holographic image film (1).

In the case of the LED light source, unlike the laser light source, the LED has a constant width around the main wavelength that forms a peak, not a single wavelength band. Therefore, the main wavelength of the LED light source used for reproducing the holographic image film is the same as the wavelength λ1 of the laser light source. However, even if there is a difference of about ± 10 nm from the wavelength λ 1 of the laser light source can be used.

That is, the light generated by each LED light source 21 and reflected from the surface of the hologram luminaire F2 or transmitted through the hologram luminaire F2 is for the recording of the hologram luminaire F2 in FIG. 1 (and FIG. 2). The same function as the laser light source 11 used in the) and to reproduce the image recorded on the holographic image film (1).

For example, if the divergence angle is 40 degrees and the illumination at 300mm distance using the LED light source of the main wavelength band 660nm, as shown in the figure it can illuminate the hologram lighting means of 200 (mm) × 1000 (mm) with five LED light sources. . By inverting this, by using the laser light source at a wavelength of 660 nm and constructing five first special filters having a solid angle of about 40 degrees, it is possible to manufacture holographic lighting means that can use the above-described LED light source.

In the case of reproducing the holographic image film using a laser light source as in the prior art, when the longitudinal length of the holographic image film is about 1000 mm, the lighting apparatus should be composed of a device having an illumination distance of about 2000 mm which is approximately twice that of the present invention. When the five LED light sources are arranged and used as described above, the holographic image film can be completely reproduced even as a lighting device having an illumination distance of approximately 300 mm.

As such, the present invention not only makes it possible to use a multi-light source for holographic reproduction, but also makes it possible to reproduce a large-scale holographic image film very easily as a small-sized reproduction device.

In the above description, but limited to preferred embodiments of the present invention, but this is only an example, the present invention is not limited to this may be modified and carried out in various ways, and further technical features based on the disclosed technical idea It will be apparent that it can be implemented in addition.

11 laser light source 13, 14 first and second special filter
21: LED light source 22, 23: 1st, 2nd mounting board

Claims (3)

  1. A laser light source 11 having a wavelength λ1, an optical separator 12 positioned at a predetermined distance from the laser light source 11, and an optical separator 12 positioned at a predetermined distance apart in one direction, each having a solid angle W1 in an adjacent region. N first special filters 13 disposed to overlap each other by S1, a second special filter 14 having a solid angle W2 positioned at a predetermined distance away from the optical separator 12, and the first special filter 13 and the first special filter 13. Preparing an optical system having a mounting plate 15 facing each of the two special filters 14;
    Preparing a hologram film F1 having horizontal and vertical lengths of L1 and L2 (L2 > L1), respectively;
    Both end portions of the transverse hologram film F1 are positioned inside the solid angle W1 of each of the first special filters 13, and both end portions of the vertical length of the hologram film F1 are disposed at the outermost sides of the N first special filters 13. Mounting the hologram film F1 on the mounting plate 15 so as to be positioned inside the solid angle W1 of each of the first special filters 13 positioned;
    The light generated by operating the laser light source 11 is separated into the object light O and the reference light R by the optical separator 12, and the separated object light O has N first pieces each having a solid angle W1. Each of the special filters 13 is overlapped by S1 in the adjacent area to enter the hologram film F1, and the separated reference light R is hologramd through the second special filter 14 having a solid angle W2 (W2 > W1). Incident to the film F1 to produce a hologram illuminating means F2 having an interference fringe formed thereon;
    N LED light sources 21, which are composed of a plurality of main wavelengths and divergence angles each having λ1 and W1, and are disposed to overlap each other by S1 in adjacent areas, and the first mounting plate 22 positioned at a predetermined distance from the LED light sources 21. ), Preparing a hologram lighting device having a second mounting plate 23 positioned at one side of the first mounting plate 22 and disposed to be inclined at an angle with the first mounting plate 22;
    Placing the hologram lighting means (F2) on the upper surface of the first mounting plate (22) and placing the holographic image film (1) on the second mounting plate (23);
    By operating the N LED light sources 21, the light generated from each LED light source 21 is emitted to W1 and the hologram image film (1) through the hologram lighting means (F2) in a state overlapped by S1 in the adjacent area. Reproducing the hologram image;
    Fabrication of a holographic lighting means for a multi-light source comprising a and a holographic image reproduction method using the same.
  2. The method of claim 1,
    The object light (O) is incident on the front portion of the hologram film (F1), and the reference light (R) is incident on the rear portion of the hologram film (F1) to produce reflective holographic lighting means; The first mounting plate 22 is located at a predetermined distance above the LED light source 21, and the light generated from each LED light source 21 is fixed to the hologram lighting means F2 placed on the first mounting plate 22. Reproducing the holographic image by reflecting at an angle and penetrating the holographic image film 1; A method of manufacturing a holographic lighting means for a multi-light source, and a method of reproducing a holographic image using the same.
  3. The method of claim 1,
    Each of the object light O and the reference light R is incident on the front portion of the hologram film F1 to produce transmissive holographic lighting means; The LED light source 21 is positioned a predetermined distance away from the upper side of the first mounting plate 22, the light generated from each LED light source 21 is hologram lighting means (F2) and the hologram placed on the first mounting plate (22) Reproducing holographic images by sequentially transmitting each of the image films 1; A method of manufacturing a holographic lighting means for a multi-light source, and a method of reproducing a holographic image using the same.
KR1020180125730A 2018-10-22 2018-10-22 Manufacturing method of hologram lighting device for multi-light source using LED and Method for representation of hologram image using that device KR102075158B1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100442820B1 (en) 2001-05-04 2004-08-02 삼성전자주식회사 Extreme angle hologram recording method and Hologram replay apparatus using holographic reflector and Method for replay of the same and Flat display element apparatus using holographic reflector
JP2005250263A (en) * 2004-03-05 2005-09-15 Alps Electric Co Ltd Holographic memory device
KR100999576B1 (en) 2009-04-10 2010-12-08 주식회사 마이마스 Reflection-type hologram device
JP2012020549A (en) * 2010-07-16 2012-02-02 Fuji Xerox Co Ltd Exposure device and image forming apparatus
KR101869495B1 (en) 2008-12-31 2018-06-20 세레스 이미징 리미티드 A Hologram Display Apparatus and A Method of Producing a Holographic Image Using the Same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100442820B1 (en) 2001-05-04 2004-08-02 삼성전자주식회사 Extreme angle hologram recording method and Hologram replay apparatus using holographic reflector and Method for replay of the same and Flat display element apparatus using holographic reflector
JP2005250263A (en) * 2004-03-05 2005-09-15 Alps Electric Co Ltd Holographic memory device
KR101869495B1 (en) 2008-12-31 2018-06-20 세레스 이미징 리미티드 A Hologram Display Apparatus and A Method of Producing a Holographic Image Using the Same
KR100999576B1 (en) 2009-04-10 2010-12-08 주식회사 마이마스 Reflection-type hologram device
JP2012020549A (en) * 2010-07-16 2012-02-02 Fuji Xerox Co Ltd Exposure device and image forming apparatus

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