KR20220095863A - optical fiber combined LED light source assembly for hologram implementation - Google Patents

optical fiber combined LED light source assembly for hologram implementation Download PDF

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Publication number
KR20220095863A
KR20220095863A KR1020200187821A KR20200187821A KR20220095863A KR 20220095863 A KR20220095863 A KR 20220095863A KR 1020200187821 A KR1020200187821 A KR 1020200187821A KR 20200187821 A KR20200187821 A KR 20200187821A KR 20220095863 A KR20220095863 A KR 20220095863A
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South Korea
Prior art keywords
optical fiber
light source
source assembly
hologram
led light
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KR1020200187821A
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Korean (ko)
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이홍식
유재형
이진환
박영재
김규린
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재단법인 한국조명아이씨티연구원
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Priority to KR1020200187821A priority Critical patent/KR20220095863A/en
Publication of KR20220095863A publication Critical patent/KR20220095863A/en

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/04—Processes or apparatus for producing holograms
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/22—Processes or apparatus for obtaining an optical image from holograms
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H2222/00—Light sources or light beam properties
    • G03H2222/10—Spectral composition
    • G03H2222/12—Single or narrow bandwidth source, e.g. laser, light emitting diode [LED]
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H2223/00—Optical components
    • G03H2223/16—Optical waveguide, e.g. optical fibre, rod

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Couplings Of Light Guides (AREA)

Abstract

The present invention relates to an optical fiber combined LED light source assembly for hologram implementation, which can obtain light in a band for obtaining a hologram image by using a relatively inexpensive LED package compared to a laser diode. The optical fiber combined LED light source assembly for hologram implementation includes: an LED package which emits light in a multi-wavelength band; optical fiber which is combined to the LED package; and an optical resonance filter which is installed on the exit surface of the optical fiber to pass only short-wavelength light.

Description

홀로그램 구현용 광섬유 결합형 LED광원 어셈블리{optical fiber combined LED light source assembly for hologram implementation}Optical fiber combined LED light source assembly for hologram implementation}

본 발명은 레이저 다이오드 보다 상대적으로 저렴한 LED패키지를 이용해서 홀로그램 영상을 획득할 대역의 광을 얻을 수 있는 홀로그램 구현용 광섬유 결합형 LED광원 어셈블리에 관한 것이다. The present invention relates to an optical fiber-coupled LED light source assembly for realizing a hologram that can obtain light of a band for obtaining a hologram image using a relatively inexpensive LED package than a laser diode.

홀로그램 영상을 획득하기 위한 시스템은 멀티 레이저 빔 프로젝터와, 상기 레이저 빔프로젝터에서 출사되는 레이저 빔이 조사되어 홀로그램의 영상을 나타내는 HOE 스크린을 포함한다. A system for acquiring a holographic image includes a multi-laser beam projector and an HOE screen that displays a holographic image by irradiating a laser beam emitted from the laser beam projector.

이러한 홀로그램 영상 획득용 멀티 레이저 빔 프로젝터는 레이저 다이오드가 사용됨으로써 LED에 비해 상대적으로 고가이다. The multi-laser beam projector for holographic image acquisition is relatively expensive compared to LED because a laser diode is used.

한국등록특허 제10-1869495호Korean Patent No. 10-1869495

본 발명은 전술한 문제를 해결하기 위하여 안출된 것으로서, 다파장 대역의 광을 발산하는 LED패키지의 광섬유 출사면에 광공진필터를 설치하여 홀로그램 구현이 가능한 단파장 대역의 광을 얻을 수 있는 광섬유 결합형 LED광원 어셈블리를 제공함에 그 목적이 있다. The present invention has been devised to solve the above problem, and by installing an optical resonant filter on the optical fiber exit surface of an LED package that emits light of a multi-wavelength band, a light of a short wavelength band capable of realizing a hologram can be obtained. An object of the present invention is to provide an LED light source assembly.

전술한 목적을 달성하기 위하여, 본 발명의 홀로그램 구현용 광섬유 결합형 LED광원 어셈블리는, 다파장 대역의 광을 발산하는 LED패키지; 상기 LED패키지에 결합되는 광섬유; 상기 광섬유의 출사면에 설치되어 단파장 대역의 광만 통과시키는 광공진필터;를 포함한다. In order to achieve the above object, the optical fiber coupled type LED light source assembly for realizing a hologram of the present invention, an LED package for emitting light of a multi-wavelength band; an optical fiber coupled to the LED package; and an optical resonant filter installed on the emitting surface of the optical fiber to pass only light of a short wavelength band.

또한, 본 발명의 홀로그램 구현용 광섬유 결합형 LED광원 어셈블리에 있어서, 상기 광공진필터는 미러-유전체층-미러 3층으로 형성되어 있다. In addition, in the optical fiber-coupled LED light source assembly for realizing a hologram of the present invention, the optical resonant filter is formed of a mirror-dielectric layer-mirror three layers.

게다가, 본 발명의 홀로그램 구현용 광섬유 결합형 LED광원 어셈블리에 있어서, 상기 광공진필터는 상기 광섬유의 출사면에 접착 또는 증착된다. Furthermore, in the optical fiber-coupled LED light source assembly for realizing a hologram of the present invention, the optical resonant filter is adhered or deposited on the emitting surface of the optical fiber.

본 발명에 의하면 다음과 같은 효과가 있다. According to the present invention, there are the following effects.

다파장 대역의 LED광이 광섬유에서 출사될 때 광공진필터를 통과하여 레이저 빔과 같은 단파장 대역의 원하는 광만 통과시킬 수 있기 때문에, 레이저 다이오드에 비해 상대적으로 저렴하게 레이저 빔과 같은 스펙트럼을 갖는 홀로그램을 구현할 수 있다. When the multi-wavelength LED light is emitted from the optical fiber, it passes through the optical resonant filter and allows only the desired light of a short wavelength band such as a laser beam to pass through. can be implemented

도 1은 본 발명의 바람직한 실시예에 따른 홀로그램 구현용 광섬유 결합형 LED광원 어셈블리를 도시한 구성도.
도 2는 도 1의 광공진필터를 도시한 단면과 광투과 개념도. 1 is a block diagram showing an optical fiber-coupled LED light source assembly for realizing a hologram according to a preferred embodiment of the present invention.
FIG. 2 is a cross-sectional view showing the optical resonance filter of FIG. 1 and a conceptual view of light transmission;

이하 본 발명의 바람직한 실시예를 첨부한 도면에 따라 설명하는데, 종래의 것과 동일한 부분에 대해서는 동일한 참조부호를 부여하고 상세한 설명은 생략한다. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, and the same reference numerals are assigned to the same parts as those of the prior art, and detailed descriptions thereof will be omitted.

도 1은 본 발명의 바람직한 실시예에 따른 홀로그램 구현용 광섬유 결합형 LED광원 어셈블리를 도시한 구성도이고, 도 2는 도 1의 광공진필터를 도시한 단면과 광투과 개념도이다. 1 is a block diagram illustrating an optical fiber-coupled LED light source assembly for realizing a hologram according to a preferred embodiment of the present invention, and FIG. 2 is a cross-section and light transmission conceptual diagram illustrating the optical resonance filter of FIG. 1 .

도 1에 도시한 바와 같이, 본 실시예에 따른 홀로그램 구현용 광섬유 결합형 LED광원 어셈블리(1)는 LED패키지(10)와, LED패키지(10)에 결합되는 광섬유(30)와, 광섬유(30)의 출사면에 설치되는 광공진필터(50)를 포함한다. As shown in FIG. 1 , the optical fiber coupled type LED light source assembly 1 for realizing a hologram according to the present embodiment includes an LED package 10 , an optical fiber 30 coupled to the LED package 10 , and an optical fiber 30 . ) includes an optical resonance filter 50 installed on the exit surface.

LED패키지(10)는 다파장의 LED광을 발산하는 패키지이다. The LED package 10 is a package that emits LED light of multiple wavelengths.

LED패키지(10)는 여기(excitation) 380㎚∼470㎚ 에서 방출(emission) 580㎚∼700㎚의 구현이 가능한 패키지이다. The LED package 10 is a package capable of realizing an emission of 580 nm to 700 nm at an excitation of 380 nm to 470 nm.

광섬유(30)는 중심에 글라스 코어(glass core)(31), 글라스 코어(31)를 감싸는 글라스 클래딩(glass cladding)(33), 글라스 클래딩(33)을 감싸는 페룰(ferrule)(35)의 단면을 갖는다. The optical fiber 30 has a glass core 31 in the center, a glass cladding 33 surrounding the glass core 31, and a ferrule 35 surrounding the glass cladding 33. has

LED광의 전달은 글라스 코어(31)를 통해 이루어진다. The LED light is transmitted through the glass core 31 .

광공진필터(50)는 다파장 대역의 LED광을 단파장 대역의 광만 통과시켜 홀로그램을 구현시킨다. The optical resonance filter 50 implements a hologram by passing the LED light of a multi-wavelength band through only the light of a short-wavelength band.

광공진필터(50)의 단면은 도 2에 도시한 바와 같이, 금속인 미러(51), 유전체층(53) 및 금속인 미러(55)의 3층으로 이루어진다. As shown in FIG. 2 , the cross section of the optical resonant filter 50 is composed of three layers of a metal mirror 51 , a dielectric layer 53 , and a metal mirror 55 .

광공진필터(50)의 투과 개념은 도 2에 도시한 바와 같이, 글라스 코어(31)를 통해 입사된 LED파장 중 λ２이면 제1층인 미러(51)는 투과되고 제3층인 미러(55)는 투과하지 못하고 제2층인 유전체층(53)에서 계속 반사만 이루어지는 파장 대역이다. As shown in FIG. 2, the transmission concept of the optical resonant filter 50 is λ2 among the LED wavelengths incident through the glass core 31, the first layer, the mirror 51, is transmitted, and the third layer, the mirror 55, is It is a wavelength band that does not transmit and is only continuously reflected by the dielectric layer 53, which is the second layer.

반면에 LED파장 중에 특정 파장 대역인 λ１이 입사되면 미러(51), 유전체층(53) 및 미러(55)인 3층을 모두 통과해서 원하는 파장 대역의 광만 얻을 수 있다. On the other hand, when λ1, which is a specific wavelength band, is incident among the LED wavelengths, only light of a desired wavelength band can be obtained through all three layers, namely the mirror 51 , the dielectric layer 53 , and the mirror 55 .

광공진필터(50)는 광섬유(30)의 단부인 출사면에 접착 또는 증착된다. The optical resonant filter 50 is adhered or deposited on the exit surface that is the end of the optical fiber 30 .

접착은 에폭시를 도포해서 설치한다. Adhesion is installed by applying epoxy.

증착은 스퍼터링으로서 특히 CVD(화학기상증착) 방식으로 형성한다. The deposition is formed by sputtering, in particular by a CVD (chemical vapor deposition) method.

즉, 광섬유(30)의 단부인 출사면에 미러(51), 유전체층(53) 및 미러(55)를 순서대로 증착 형성한다. That is, the mirror 51 , the dielectric layer 53 , and the mirror 55 are sequentially deposited and formed on the emitting surface that is the end of the optical fiber 30 .

도 1에서는 광공진필터(50)가 광섬유(30)의 출사면 전체에 접착 또는 증착된 것으로 도시하고 있지만, 글라스 코어(31)에만 접착 또는 증착하거나, 글라스 코어(31)와 글라스 클래딩(33)에만 접착 또는 증착되어도 원하는 광의 투과가 가능하다. 1 shows that the optical resonant filter 50 is adhered or deposited on the entire emitting surface of the optical fiber 30, but is adhered or deposited only on the glass core 31, or the glass core 31 and the glass cladding 33 It is possible to transmit the desired light even if it is adhered or deposited only on the substrate.

본 발명은 상술한 특정의 바람직한 실시예에 한정되지 아니하며, 청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 기술분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변형실시가 가능한 것은 물론이고, 그와 같은 변경은 청구범위 기재의 범위 내에 있게 됨을 부언한다. The present invention is not limited to the specific preferred embodiments described above, and various modifications are possible by anyone with ordinary skill in the art to which the invention pertains without departing from the gist of the invention as claimed in the claims. Of course, it is added that such modifications are intended to be within the scope of the claims.

1 : 홀로그램 구현용 광섬유 결합형 LED광원 어셈블리
10 : LED패키지
30 : 광섬유
31 : 글라스 코어
33 : 글라스 클래딩
35 : 페룰
50 : 광공진필터
51 : 미러(제1층)
53 : 유전체층(제2층)
55 : 미러(제3층)1: Fiber-coupled LED light source assembly for hologram implementation
10 : LED package
30: optical fiber
31: glass core
33 : Glass Cladding
35 : ferrule
50: optical resonance filter
51: Mirror (1st floor)
53: dielectric layer (second layer)
55: Mirror (3rd floor)

Claims (3)

다파장 대역의 광을 발산하는 LED패키지;
상기 LED패키지에 결합되는 광섬유;
상기 광섬유의 출사면에 설치되어 단파장 대역의 광만 통과시키는 광공진필터;를 포함하는 홀로그램 구현용 광섬유 결합형 LED광원 어셈블리.
LED package that emits light of multiple wavelength bands;
an optical fiber coupled to the LED package;
An optical fiber-coupled LED light source assembly for realizing a hologram comprising a; an optical resonance filter installed on the emitting surface of the optical fiber to pass only light of a short wavelength band.
 청구항 1에 있어서,
상기 광공진필터는 미러-유전체층-미러 3층으로 형성되는 홀로그램 구현용 광섬유 결합형 LED광원 어셈블리.
The method according to claim 1,
The optical resonant filter is a mirror-dielectric layer-mirror optical fiber coupled type LED light source assembly for implementing a hologram formed of three layers.
 청구항 2에 있어서,
상기 광공진필터는 상기 광섬유의 출사면에 접착 또는 증착되는 홀로그램 구현용 광섬유 결합형 LED광원 어셈블리.
3. The method according to claim 2,
The optical resonant filter is an optical fiber-coupled LED light source assembly for realizing a hologram that is adhered or deposited on the emitting surface of the optical fiber.
KR1020200187821A 2020-12-30 2020-12-30 optical fiber combined LED light source assembly for hologram implementation KR20220095863A (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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 (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

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