KR940007079Y1 - Projection display device - Google Patents
Projection display device Download PDFInfo
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- KR940007079Y1 KR940007079Y1 KR2019910019034U KR910019034U KR940007079Y1 KR 940007079 Y1 KR940007079 Y1 KR 940007079Y1 KR 2019910019034 U KR2019910019034 U KR 2019910019034U KR 910019034 U KR910019034 U KR 910019034U KR 940007079 Y1 KR940007079 Y1 KR 940007079Y1
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- light
- infrared
- filter
- infrared rays
- color separation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/04—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for filtering out infrared radiation
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
-
- 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
- G03B21/16—Cooling; Preventing overheating
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mathematical Physics (AREA)
- General Engineering & Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Optics & Photonics (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Liquid Crystal (AREA)
Abstract
내용 없음.No content.
Description
제1도의 (a)는 종래 적외선 선택필터의 특성을 나타낸 그래프, (b)는 종래 제1색분리필터의 특성을 나타낸 그래프, (c)는 종래 Al 미러의 특성을 나타낸 그래프.Figure 1 (a) is a graph showing the characteristics of the conventional infrared selection filter, (b) is a graph showing the characteristics of the conventional first color separation filter, (c) is a graph showing the characteristics of the conventional Al mirror.
제2도는 이 고안에 따른 투사형 표시장치의 광학계를 개략적으로 나타낸 도면.2 schematically shows an optical system of a projection display device according to the present invention.
제3도의 (a)는 이 고안에 따른 제1색분리필터의 특성을 나타낸 그래프, (b)는 이 고안에 따른 콜드미러의 특성을 나타낸 그래프이다.(A) of FIG. 3 is a graph showing the characteristics of the first color separation filter according to the present invention, and (b) is a graph showing the characteristics of the cold mirror according to the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
10 : 광원 11 : 적외선 선택필터10: light source 11: infrared selection filter
12 : 제1색분리필터 13 : 제2색분리필터12: first color separation filter 13: second color separation filter
14 : 콜드미러(cold mirror) 15 : 제1색합성필터14: cold mirror 15: first color synthesis filter
16 : Al미러 17 : 제2색합성필티16: Al mirror 17: Second color synthetic filter
18 : 줌렌즈 19 : 스크린18: zoom lens 19: screen
20 : 액정패널 21 : 콘덴서 렌즈20 liquid crystal panel 21 condenser lens
이 고안은 열선제거 투사형 표시장치에 관한 것으로서, 더욱 상세하게는 액정 TV나 백색광을 이용하여 삼원색을 분리시키는 투사형 장치의 경우 광원으로부터 투사되는 광을 삼원색과 적외선으로 분리하여 적외선이 완전히 제거된 광이 액정패널에 투과될 수 있도록 한 투사형 열선제거 표시장치에 관한 것이다.The present invention relates to a heat ray elimination projection display device. More specifically, in a projection type device in which three primary colors are separated using a liquid crystal TV or white light, the light emitted from the light source is separated into three primary colors and infrared rays to completely remove infrared rays. The present invention relates to a projection type heat ray elimination display device which can be transmitted to a liquid crystal panel.
일반적으로, 투사형 표시장치에 사용되는 광원으로부터 투사되는 광 중에는 액정패널에 입사됨으로서 액정의 온도상승의 요인이 되는 적외선이 포함되어 있으므로 제2도에 나타낸 바와같이, 광원(10)으로부터 투사되는 광이 적외선 선택필터(11)를 통과하는 중에 상기 적외선은 제거되어야 한다.In general, the light projected from the light source used in the projection display device includes infrared rays which are incident on the liquid crystal panel, which causes the temperature rise of the liquid crystal. Therefore, as shown in FIG. 2, the light projected from the light source 10 The infrared rays must be removed while passing through the infrared selection filter 11.
그러나, 제1도의 (a),(b)에 나타낸 바와같이, 상기 적외선 선택필터(11)를 통과하면서 제거될 수 있는 적외선의 파장대역은 800nm∼1100nm로서 그 이상의 파장을 갖는 적외선은 삼원색과 함께 상기 적외선 선택필터(11)를 투과하게 됨으로서 액정패널(20)에 입사되어 액정의 온도가 상승하게 됨에 따라 액정이 불완전하게 작동하여 선명한 화상을 형성하지 못하게 되는 문제점을 가지는 것이었다.However, as shown in (a) and (b) of FIG. 1, the wavelength band of infrared rays that can be removed while passing through the infrared selective filter 11 is 800 nm to 1100 nm. As the light penetrates the infrared selection filter 11 and enters the liquid crystal panel 20 and the temperature of the liquid crystal increases, the liquid crystal is incompletely operated to form a clear image.
이 고안은 상기와 같은 문제점을 감안하여 안출한 것으로서, 이 고안의 목적은 광원으로부터 투사되는 광중에서 삼원색과 적외선을 선택분리하고 적외선이 완전이 제거된 광이 액정패널에 투사되도록 하여 액정패널에서 형성되는 삼원색 각각의 화상이 정확하게 형성되어 스크린에 선명하게 투사되도록 한 투사형 표시장치를 제공하는 것이다.This invention has been devised in view of the above problems, and the object of this invention is to separate the three primary colors and infrared rays from the light projected from the light source, and to remove the infrared rays completely, so that the liquid crystal panel is formed on the liquid crystal panel. It is to provide a projection display device in which an image of each of the three primary colors to be formed is accurately formed and projected clearly on a screen.
상기 목적을 달성하기 위한 이 고안의 특징은, 백색광과 색분리필터를 이용하여 광원으로부터 투사된 광중에서 3원색(적, 녹, 청)을 분리하고 적외선을 제거함에 있어서, 상기 광원으로부터 투사되어 적외선 선택필터를 통과하는 광 중에서 적색과 적외선을 선택하여 90°반사시키고 녹색과 청색은 투과시키는 제1색분리필터가 상기 적외선 선택필터의 전방에 소정의 각도로 설치되고, 상기 제1색분리필터에서 반사되는 적색은 90°반사시키고 적외선은 통과시켜 상기 적외선을 제거시키는 콜드미러가 상기 제1색분리필터의 상부에 소정의 각도로 설치된 것이다.A feature of this invention for achieving the above object is that in separating the three primary colors (red, green, blue) from the light projected from the light source using white light and a color separation filter and removing the infrared light, the infrared light projected from the light source A first color separation filter which selects red and infrared rays from the light passing through the selection filter to reflect 90 ° and transmits green and blue light is installed at a predetermined angle in front of the infrared selection filter. A cold mirror reflecting the reflected red 90 ° and passing infrared rays to remove the infrared rays is installed at a predetermined angle on the first color separation filter.
이하, 이고안에 따른 투사형 표시장치의 실시예를 첨부도면에 따라 상세하게 설명한다.DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the projection display device according to Io will be described in detail with reference to the accompanying drawings.
제2도는 이 고안에 따른 투사형 표시장치의 광학계를 개략적으로 나타낸 것으로서, 광원(10)으로부터 투사형되는 광중에서 3원색(적, 녹, 청)을 선택하여 통과시키고 파장의 대역이 800㎚∼1100㎚을 갖는 적외선을 반사시키는 적외선 선택필터(11)가 상기 광원(10)의 전방에 수직으로 설치되고, 상기 적외선 선택필터(11)를 통과하는 광중에서 적색과 파장이 1100㎚ 이상인 적외선은 90°반사시키고, 녹, 청은 투과시키는 제1색분리필터(12)가 상기 적외선 선택필터(11)이 전방에 소정의 각도로 설치된다.2 schematically shows an optical system of a projection display device according to the present invention, in which three primary colors (red, green, and blue) are selected and passed among the light projected from the light source 10, and the wavelength band is 800 nm to 1100 nm. Infrared selective filter 11 reflecting infrared rays having a vertical direction is installed vertically in front of the light source 10, and infrared rays having a red color and a wavelength of 1100 nm or more in the light passing through the infrared selective filter 11 reflect 90 °. A first color separation filter 12 for transmitting green and blue light is installed at a predetermined angle in front of the infrared filter 11.
그리고, 상기 제1색분리필터(12)에서 반사되는 적색은 90°반사시키고 상기 파장이 1100nm 이상인 적외선은 통과시키는 콜드미러(14)가 상기 제1색분리필터(12)의 상부에 소정의 각도로서 설치된다.In addition, a cold mirror 14 for reflecting 90 degrees of red reflected from the first color separation filter 12 and passing infrared rays having the wavelength greater than or equal to 1100 nm has a predetermined angle on an upper portion of the first color separation filter 12. It is installed as.
이상에서와 같이 이 고안의 투사형 표시장치는, 광원(10)으로부터 광이 투사되면 적외선 선택필터(11)에 의해 파장의 대역이 800nm∼1100nm을 갖는 적외선은 반사되어 방출되므로 1차적으로 적외선이 제거되고, 그 이상의 파장을 갖는 적외선과 삼원색인 적색, 녹색, 청색의 광이 투과되는 것이다.As described above, in the projection display device of the present invention, when light is projected from the light source 10, infrared rays having a wavelength band of 800 nm to 1100 nm are reflected and emitted by the infrared selective filter 11, so that infrared rays are primarily removed. Infrared rays having more wavelengths and red, green, and blue light, which are three primary colors, are transmitted.
여기에서, 적외선 선택필터(11)는 상기 광 중에서 반사시키는 색과 투과시키는 색을 제조과정에서 자유롭게 선택할 수가 있으며, 이 고안의 실시예에서는 빛의 삼원색이 적, 녹, 청색과 파장의 대역이 1100nm 이상이 외선만이 투과되는 것이다.Herein, the infrared selection filter 11 can freely select the color to be reflected and the color to be transmitted from the light during the manufacturing process, and in the embodiment of the present invention, the three primary colors of the light are red, green, blue and the wavelength band is 1100 nm. The above is the transmission of only the external rays.
그리고, 제3도 (a),(b)에 나타낸 바와같이, 상기 적외선 선택필터(11)를 투과하는 광 중에서 제1색분리필터(12)에 의해 적색과 적외선은 90°반사되어져 그 상부에 설치된 콜드미러(14)에 의해서 파장이 1100nm 이상인 적외선은 통과되어 방출되므로 적외선은 완전하게 제거되며 적색은 90°반사되어 전방에 설치된 콘덴서렌즈(21)에 의해 투사되어져 액정패널(20)을 투과하면서 화상이 형성되어 제1색합성필터(15)로 보내지게 된다.As shown in FIGS. 3A and 3B, the red and the infrared rays are reflected by 90 ° by the first color separation filter 12 among the light passing through the infrared selective filter 11, Infrared rays having a wavelength of 1100 nm or more are passed through and discharged by the installed cold mirror 14, and thus infrared rays are completely removed and red is reflected by 90 ° and is projected by the condenser lens 21 installed at the front to penetrate the liquid crystal panel 20. An image is formed and sent to the first color synthesis filter 15.
또한, 상기 제1색분리필터(12)를 투과하는 녹, 청 두색중 청색은 전방에 소정의 각도로 설치된 제2색분리필터(13)에 의해 90°반사되어 이 상부에 위치한 콘덴서렌즈(21)에 의해 액정패널(20)을 통과하면서 화상이 형성되어 제1색합성필터(15)에서 반사되어 적색과 합성이 된다.In addition, blue of green and blue that passes through the first color separation filter 12 is reflected by 90 ° by the second color separation filter 13 installed at a predetermined angle in front of the capacitor lens 21 positioned thereon. By passing through the liquid crystal panel 20, an image is formed and reflected by the first color synthesis filter 15 to be combined with red.
한편, 상기 제2색분리필터(13)를 투과한 녹색은 그 전방에 설치된 콘덴서렌즈(21)를 통과하여 액정패널(20)을 투과하면서 화상이 형성되어 이 전방에 위치한 Al미러(16)에서 반사되어 그 상측에 위치한 상기 제2색합성필터(17)에서 반사되어 상기 제1색합성필터(15)에서 합성된 적,청색과 합성되어 삼원색인 적, 녹, 청색이 줌렌즈(18)를 통과하여 스크린(19)에 영상이 맺히게 된다.On the other hand, the green light transmitted through the second color separation filter 13 passes through the condenser lens 21 installed in front of the liquid crystal panel 20, and an image is formed, and the Al mirror 16 located in front of the second color separation filter 13 is formed. Reflected by the second color synthesis filter 17 positioned on the upper side thereof, red, green, and blue, which are three primary colors, are combined with red and blue synthesized by the first color synthesis filter 15 to pass through the zoom lens 18. The image is formed on the screen 19.
그리고, 액정패널(20)에 R,G,B 3색에 따른 투과율이 정해져 전기신호 인가에 따른 스크린(19)의 색상을 결정하게 되는데 상기 액정패널(20)상을 인가하면 상기 스크린(19)에 칼라화상이 재현되는 것이다.Then, the transmittance of three colors of R, G, and B is determined in the liquid crystal panel 20 to determine the color of the screen 19 according to the application of the electric signal. When the liquid crystal panel 20 is applied, the screen 19 is applied. The color image is reproduced.
이상에서와 같이 이 고안에 따른 투사형 표시장치는, 광원으로부터 투사되는 광을 삼원색과 액정의 온도상승요인이 되는 적외선으로 분리하고 적외선을 완전하게 제거한 다음 액정패널을 투과시킴으로써 삼원색 각각의 화상이 완전하게 형성되어 스크린에 투사됨으로써 화질이 우수해지고 선명한 색상의 화면을 갖게 되는 것이다.As described above, the projection display device according to the present invention separates the light projected from the light source into three primary colors and infrared rays, which are temperature rising factors of the liquid crystal, completely removes the infrared rays, and then transmits the images of each of the three primary colors by completely transmitting the liquid crystal panel. By forming and projecting onto the screen, the image quality is excellent and the screen has a vivid color.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019910019034U KR940007079Y1 (en) | 1991-11-09 | 1991-11-09 | Projection display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019910019034U KR940007079Y1 (en) | 1991-11-09 | 1991-11-09 | Projection display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR930012548U KR930012548U (en) | 1993-06-25 |
| KR940007079Y1 true KR940007079Y1 (en) | 1994-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019910019034U KR940007079Y1 (en) | 1991-11-09 | 1991-11-09 | Projection display device |
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| KR (1) | KR940007079Y1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6570713B2 (en) * | 2001-02-27 | 2003-05-27 | Silicon Valley Group, Inc. | Method and apparatus for optimizing the output beam characteristics of a laser |
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1991
- 1991-11-09 KR KR2019910019034U patent/KR940007079Y1/en not_active IP Right Cessation
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| KR930012548U (en) | 1993-06-25 |
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