KR20050117109A - Display apparatus using a red laser for improving color reproduction - Google Patents
Display apparatus using a red laser for improving color reproduction Download PDFInfo
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- KR20050117109A KR20050117109A KR1020040042314A KR20040042314A KR20050117109A KR 20050117109 A KR20050117109 A KR 20050117109A KR 1020040042314 A KR1020040042314 A KR 1020040042314A KR 20040042314 A KR20040042314 A KR 20040042314A KR 20050117109 A KR20050117109 A KR 20050117109A
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- lamp
- red laser
- red
- reflector
- light
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/18—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical projection, e.g. combination of mirror and condenser and objective
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- 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
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0005—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being of the fibre type
- G02B6/0008—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being of the fibre type the light being emitted at the end of the fibre
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/28—Reflectors in projection beam
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/30—Structure or shape of the active region; Materials used for the active region
- H01S5/32—Structure or shape of the active region; Materials used for the active region comprising PN junctions, e.g. hetero- or double- heterostructures
- H01S5/323—Structure or shape of the active region; Materials used for the active region comprising PN junctions, e.g. hetero- or double- heterostructures in AIIIBV compounds, e.g. AlGaAs-laser, InP-based laser
- H01S5/32308—Structure or shape of the active region; Materials used for the active region comprising PN junctions, e.g. hetero- or double- heterostructures in AIIIBV compounds, e.g. AlGaAs-laser, InP-based laser emitting light at a wavelength less than 900 nm
- H01S5/32325—Structure or shape of the active region; Materials used for the active region comprising PN junctions, e.g. hetero- or double- heterostructures in AIIIBV compounds, e.g. AlGaAs-laser, InP-based laser emitting light at a wavelength less than 900 nm red laser based on InGaP
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
본 발명은 백색광 램프와 상기 램프를 포함하는 반사경과 상기 반사경에 작은 구멍을 만들어 적색 레이저를 방출하는 화이버와 상기 반사경내에서 혼합된 상기 백색광과 상기 적색광을 방출하는 디스플레이 광원 장치에 관한 것이다. The present invention relates to a white light lamp, a reflector including the lamp, a fiber for emitting a small laser hole in the reflector, and a display light source device for emitting the white light and the red light mixed in the reflector.
Description
LCD나 DLP를 사용한 프로젝션 TV나 프로젝터와 같은 프로젝션 디스플레이 시스템은 그림 1과 같이, 램프, 조명 광학계, LCD나 DLP 패널, 결상 광학계, 스크린 등으로 구성된다.램프에서 방출되는 백색광은 칼라 필터등을 사용하여 적색, 녹색, 청색 광으로 분리하고, 조명 광학계를 사용하여 상을 형성시키는 패널에 균일하게 조사시킨 다음, 프로젝션 렌즈로 구성된 결상 광학계를 이용하여 스크린에 상을 형성시켜 영상을 구현하게 된다. 이러한 구성에서 시스템의 색 구성을 결정하는 것이 램프의 백색광의 스펙트럼과 칼라 필터에 의하여 시스템의 색 좌표가 결정되게 된다. Projection display systems using LCDs or DLPs Projection display systems such as TVs and projectors are composed of lamps, illumination optics, LCD or DLP panels, imaging optics, and screens, as shown in Figure 1. The white light emitted from the lamp uses a color filter. The light is separated into red, green, and blue light, and uniformly irradiated to a panel forming an image using an illumination optical system, and then an image is formed on a screen using an imaging optical system composed of a projection lens. In such a configuration, the color configuration of the system is determined by the color filter and the spectrum of the white light of the lamp.
일반적으로 프로젝션 디스플레이에 사용되는 램프는 할로겐 램프, UHP 램프등을 사용하게 되는데, 가장 많이 사용되고 있는 것은 UHP 램프이다. 일반적으로 램프는 열 발생이 많고, 밝기가 사용시간에 비례하여 떨어지며, 수명시간도 수천시간으로 짧은 단점이 있다. 또한 그림 3의 스펙트럼으로 보듯이 램프를 사용하여 시스템을 구성할 경우 녹색이나 청색 영역은 스펙트럼 상에서 메인 피크가 있어 색감이 잘 표현된다. 그에 반하여 적색 부분은 스펙트럼 상에서 메인 피크가 없어 색감이 떨어지는 단점이 있다. Generally, lamps used in projection displays include halogen lamps and UHP lamps, and the most commonly used lamps are UHP lamps. In general, the lamp generates a lot of heat, the brightness is reduced in proportion to the use time, and the short life time of thousands of hours has a disadvantage. In addition, as shown in the spectrum of Figure 3, when the system is configured using a lamp, the green or blue region has a main peak in the spectrum, which shows the color well. On the other hand, the red part has a disadvantage in that color is not present because there is no main peak in the spectrum.
그리고 최근에 고출력 반도체 기술이 발전하여 적색 반도체 레이저의 광 출력이 급속하게 증가하여 630 ~ 650nm의 적색 영역에서 수 W에 이르게 되었다.적색반도체 레이저는 GaAS기판위에 MOCVD를 사용하여 AlGaInP, InGaP물질로 성장시키며 수명시간도 10000시간 이상 가능하고, 반도체 레이저에 방출되는 레이저 광을 화이버결합하여 전달시키는 것이 가능하다. Recent advances in high-power semiconductor technology have led to a rapid increase in the light output of red semiconductor lasers, reaching several W in the red region of 630-650 nm. Red semiconductor lasers have grown to AlGaInP and InGaP materials using MOCVD on GaAS substrates. In addition, the life time can be more than 10,000 hours, and the laser light emitted by the semiconductor laser can be delivered by fiber coupling.
본 발명은 화이버 결합형 적색 레이저를 램프와 같이 사용하여 램프의 색 순도가 떨어지는 적색 영역의 색감을 향상시키기 위한 목적이 있다. An object of the present invention is to improve the color of the red region in which the color purity of the lamp is poor by using a fiber-coupled red laser as a lamp.
본 발명은 백색광 램프(lamp)와 상기 램프를 포함하는 반사경과 상기 반사경에 작은 구멍을 만들어 적색 레이저를 방출하는 화이버(fiber)와 상기 반사경내에서 혼합된 상기 백색광과 상기 적색광을 방출하는 디스플레이 광원 장치에 관한 것이다.The present invention provides a display light source device for emitting a white light lamp and a reflector including the lamp, a fiber for emitting a red laser by making a small hole in the reflector, and the white light and the red light mixed in the reflector. It is about.
도면 1의 b은 램프에 미세한 구멍을 만들어 화이버를 삽입시켜 램프의 백색광과 화이버에서 방출되는 적색 레이저를 혼합시키는 것이다. 이에 대한 스펙트럼은 도면 2의 b에 나타나있다. 이러한 광원을 사용하여 시스템을 구성하면 도면 3과 같은 색 좌표를 가지는 시스템을 구성할 수 있다.Figure 1b is to make a fine hole in the lamp to insert the fiber to mix the white light of the lamp and the red laser emitted from the fiber. The spectrum for this is shown in b of FIG. When the system is configured using such a light source, a system having color coordinates as shown in FIG. 3 can be configured.
본 발명은 적색 레이저에서 방출되는 광원과 램프에서 방출되는 백색광이 자연스럽게 혼합되어 기존 디스플레이 광학 장치의 광학계를 변형시키지 않고 쉽게 이용할 수 있다. 또한 디스플레이상에서 표현될 수 있는 색 표현 범위도 적색 좌표가 CIE좌표의 끝 선에 위치되어 보다 넓은 범위의 색을 표현할 수 있다. The present invention is naturally mixed with the light source emitted from the red laser and the white light emitted from the lamp can be easily used without modifying the optical system of the existing display optical device. In addition, the range of color expression that can be expressed on the display can also represent a wider range of colors as the red coordinate is located at the end line of the CIE coordinate.
본 발명은 화이버가 결합된 적색 레이저 광을 손쉽게 램프를 혼합하여 구성하므로 기존 디스플레이 광학 장치에 손쉽게 적용할 수 있으며, 적색 광을 보강하여 자연색에 가까운 색으로 표현되는 영상을 구현하는 효과가 있다. The present invention can be easily applied to the existing display optical device because the red laser light combined with the fiber is easily mixed with the lamp, and the image is expressed in a color close to natural colors by reinforcing the red light.
도1 기존의 백색광 램프를 이용한 디스플레이 광학 장치1 is a display optical apparatus using a conventional white light lamp
도2 도1에 적색 레이저를 추가시킨 디스플레이 광학 장치2 is a display optical apparatus in which a red laser is added to FIG.
도3 백색광만을 이용했을 때의 파장에 따른 광출력 Fig. 3 Light output according to wavelength when only white light is used
도4 적색레이저를 추가시켰을 때의 광출력Fig. 4 Light output when red laser is added
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020040042314A KR20050117109A (en) | 2004-06-09 | 2004-06-09 | Display apparatus using a red laser for improving color reproduction |
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| Application Number | Priority Date | Filing Date | Title |
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| KR1020040042314A KR20050117109A (en) | 2004-06-09 | 2004-06-09 | Display apparatus using a red laser for improving color reproduction |
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| Publication Number | Publication Date |
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| KR20050117109A true KR20050117109A (en) | 2005-12-14 |
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| KR1020040042314A KR20050117109A (en) | 2004-06-09 | 2004-06-09 | Display apparatus using a red laser for improving color reproduction |
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2004
- 2004-06-09 KR KR1020040042314A patent/KR20050117109A/en not_active Application Discontinuation
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