KR0119804Y1 - Light device of liquid crystal projector - Google Patents

Light device of liquid crystal projector

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Publication number
KR0119804Y1
KR0119804Y1 KR92025154U KR920025154U KR0119804Y1 KR 0119804 Y1 KR0119804 Y1 KR 0119804Y1 KR 92025154 U KR92025154 U KR 92025154U KR 920025154 U KR920025154 U KR 920025154U KR 0119804 Y1 KR0119804 Y1 KR 0119804Y1
Authority
KR
South Korea
Prior art keywords
light
ultraviolet
infrared
liquid crystal
light source
Prior art date
Application number
KR92025154U
Other languages
Korean (ko)
Other versions
KR940016910U (en
Inventor
홍경호
Original Assignee
구자홍
엘지전자주식회사
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Application filed by 구자홍, 엘지전자주식회사 filed Critical 구자홍
Priority to KR92025154U priority Critical patent/KR0119804Y1/en
Publication of KR940016910U publication Critical patent/KR940016910U/en
Application granted granted Critical
Publication of KR0119804Y1 publication Critical patent/KR0119804Y1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
    • H04N5/7416—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal
    • H04N5/7441—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal the modulator being an array of liquid crystal cells
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/64—Constructional details of receivers, e.g. cabinets or dust covers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/024—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof deleted
    • H04N2201/02497—Additional elements, e.g. sheet guide plates, light shields

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  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Projection Apparatus (AREA)
  • Liquid Crystal (AREA)

Abstract

본 고안은 액정프로젝터의 광학장치에 관한 것으로, 종래에는 광원으로부터 발산되는 빛중에서 자외선/적외선 성분의 빛이 자연 방출됨으로써, 광원의 에너지를 효율적으로 이용하지 못하였으며, 조정되지 않은 자외선/적외선이 그대로 외부로 방출되어 시청자에게 유해하게 작용되는 문제점이 있었는 바, 광원(1)과 자외선/적외선 커팅필터(4)의 중심을 연결하는 광축상에 자외선/적외선 조정수단(10)을 구비하여 구성되는 본 고안을 제공하여 광원에서 방사되는 자외선/적외선을 적절히 조절하여 인체의 유익한 성분의 빛만을 방출하게 됨으로써, 광원의 에너지 효율이 극대화되고, 장치의 인체에 대한 안전성이 향상되어 상품성을 향상하도록 한 것이다.The present invention relates to an optical device of a liquid crystal projector, and in the related art, light of ultraviolet / infrared components is naturally emitted from light emitted from a light source, thereby not using energy of a light source efficiently, and uncontrolled ultraviolet / infrared rays remain unchanged. There was a problem in that it is emitted to the outside harmful to the viewer, the main body having an ultraviolet / infrared adjusting means 10 on the optical axis connecting the center of the light source 1 and the ultraviolet / infrared cutting filter 4 By providing a design to properly control the ultraviolet / infrared rays emitted from the light source to emit only the light of the beneficial components of the human body, the energy efficiency of the light source is maximized, the safety of the human body of the device is improved to improve the marketability.

Description

액정 프로젝터의 광학장치Optical device of the liquid crystal projector

제1도는 종래 액정 프로젝터 광학장치의 구성도.1 is a block diagram of a conventional liquid crystal projector optical device.

제2도는 본 고안 액정 프로젝터 광학장치의 구성도.2 is a block diagram of the liquid crystal projector optical device of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1: 광원 2: 반사경1: light source 2: reflector

3: 자외선/적외선 선택미러 4: 자외선/적외선 커팅필터3: UV / IR selection mirror 4: UV / IR cutting filter

5: 집광렌즈 6: 액정판넬5: condenser lens 6: liquid crystal panel

7: 투사렌즈 8: 스크린7: Projection lens 8: Screen

9: 외부케이스 9: 자외선/적외선 조정수단9: outer case 9: UV / IR adjustment means

11: 자외선/적외선 집광렌즈 12: 파장선택필터11: ultraviolet / infrared condenser lens 12: wavelength selective filter

13: 자외선 투사렌즈 14: 아웃풋(Out put)필터13: UV projection lens 14: Out put filter

15: 에너지량 조절필터 16: 확산판15: energy amount control filter 16: diffuser plate

본 고안은 액정프로젝터(Projector)의 광학장치에 관한 것으로, 특히 광원으로부터 발산되어 자연 방출되는 자외선/적외선을 적절하게 조절하는 자외선/적외선 조정수단을 구비하여 광원의 에너지 효율을 극대화하고, 장치의 인체에 대한 안전성을 향상하도록 한 액정 프로젝터의 광학장치에 관한 것이다.The present invention relates to an optical device of a liquid crystal projector (Projector), and in particular to the ultraviolet / infrared adjustment means for appropriately adjusting the ultraviolet / infrared rays emitted from the light source to maximize the energy efficiency of the light source, the human body of the device The optical device of the liquid crystal projector to improve the safety for the.

종래 액정 프로젝터의 광학장치는 제1도에 도시한 바와같이, 광원(1)과, 광원(1)으로부터 발광되는 빛을 반사하는 반사경(2)과, 반사경(2)으로부터 입사되는 빛 중 가시광선 성분은 반사하고, 자외선(UV)/적외선(IR) 성분은 투과시키는 UV/IR 선택미러(3)와, UV/IR 선택미러(3)로부터 반사되는 빛 중 UV/IR 성분은 깍아주고, 가시광선 성분만을 투과시키는 UV/IR 커팅필터(4)와, UV/IR 커팅필터(4)에서 투과되는 빛을 집광하는 집광렌즈(5)와, 화상 신호에 따라 화상을 구현하는 액정판넬(6)과, 액정판넬(6)로부터의 화상정보를 확대 투사하는 투사렌즈(7)와, 투사렌즈(7)에서 확대 투사되는 화상이 결상되는 스크린(8)으로 구성되어 있다.As shown in FIG. 1, an optical apparatus of a conventional liquid crystal projector includes a light source 1, a reflector 2 reflecting light emitted from the light source 1, and visible light of light incident from the reflector 2; The UV / IR selective mirror 3, which reflects the components and transmits the UV / IR components, and the UV / IR components of the light reflected from the UV / IR selective mirror 3, are scraped and visible. UV / IR cutting filter 4 for transmitting only light components, condensing lens 5 for condensing light transmitted from UV / IR cutting filter 4, and liquid crystal panel 6 for realizing an image according to an image signal And a projection lens 7 for magnifying and projecting image information from the liquid crystal panel 6 and a screen 8 for forming an image projected and enlarged by the projection lens 7.

도면중 미설명 부호 9는 장치의 외부케이스를 도시한 것이다.Reference numeral 9 in the drawings shows an outer case of the device.

이와같이 구성되는 종래의 광학장치는 광원(1)에서 방사되는 적외선과 자외선 성분이 상기 UV/IR 선택미러(3)와 UV/IR 커팅필터(4)에서 제거되어 직접 외부로 발산되어지거나 열로 처리되어 냉각구조에 의해 외부케이스(9) 밖으로 방출되게 한다.In the conventional optical device configured as described above, the infrared and ultraviolet components emitted from the light source 1 are removed from the UV / IR selective mirror 3 and the UV / IR cutting filter 4 and are directly emitted to the outside or treated with heat. By the cooling structure to be discharged out of the outer case (9).

그런데, 이와같이 광원으로부터 발산되는 적외선/자외선 성분이 자연 방출됨으로써, 광원의 에너지를 효율적으로 이용하지 못하는 결함이 있었고, 조정되지 않는 적외선/자외선 성분이 그대로 외부로 방출되어 시청자의 인체에 유해하게 작용되는 문제점이 있는 것이었다.However, the infrared / ultraviolet components emitted from the light source are naturally emitted, so that there is a defect in not using the energy of the light source efficiently. There was a problem.

본 고안의 목적은 여과되지 않은체 외부로 방출되는 적외선/자외선을 여과하여 인체에 유익한 광선만을 외부로 방출하도록 함으로써, 광원에서 방사되는 에너지의 이용을 극대화하고, 장치의 인체에 대한 안전성을 향상하려는데 있다.The purpose of the present invention is to maximize the use of the energy emitted from the light source, and to improve the safety of the human body by filtering the infrared / ultraviolet rays emitted to the outside of the unfiltered body to emit only the light beams beneficial to the human body to the outside have.

이러한 본 고안의 목적을 달성하기 위하여, 광원과, 반사경과, 자외선/적외선 선택미러와, 자외선/적외선 커팅필터와, 집광렌즈와, 액정판넬과 투사렌즈와, 스크린으로 구성되는 액정프로젝터의 광학장치에 있어서, 상기 광원과 자외선/적외선 커팅필터의 중심을 연결하는 광축상에 자외선/적외선 조정수단을 구비하여 구성함을 특징으로 하는 액정프로젝터의 광학장치가 제공된다.In order to achieve the object of the present invention, an optical device of a liquid crystal projector consisting of a light source, a reflector, an ultraviolet / infrared selective mirror, an ultraviolet / infrared cutting filter, a condenser lens, a liquid crystal panel and a projection lens, and a screen An optical apparatus of a liquid crystal projector is provided, comprising an ultraviolet / infrared light adjusting means provided on an optical axis connecting the light source and the center of the ultraviolet / infrared cutting filter.

이하, 상기한 바와같은 본 고안을 첨부 도면에 의거하여 상세히 설명한다.Hereinafter, the present invention as described above will be described in detail with reference to the accompanying drawings.

제2도는 본 고안 액정 프로젝터 광학장치의 구성도로서, 이에 도시한 바와같이 본 고안에 의한 액정 프로젝터의 광학장치는 광원(1)과, 광원(1)으로부터 발광되는 빛을 반사하는 반사경(2)과, 반사경(2)으로부터 입사되는 빛 중에서 가시광선 성분을 반사하고, 자외선/적외선 성분은 투과시키는 UV/IR 선택미러(3)와, UV/IR 선택미러(3)로부터 반사되는 빛 중에서 UV/IR 성분은 깍아주고, 가시광선 성분만을 투과시키는 UV/IR 커팅필터(4)와, UV/IR 커팅필터(4)에서 투과되는 빛을 집광하는 집광렌즈(5)와, 화상신호에 따라 화상을 구현하는 액정판넬(6)과, 액정판넬(6)로부터의 화상정보를 확대 투사하는 투사렌즈(7)와, 투사렌즈(7)에서 확대 투사되는 화상이 결상되는 스크린(8)으로 구성되는 액정 프로젝터의 광학장치에 있어서, 상기 광원(1)과 UV/IR 커팅필터(4)의 중심을 연결하는 광축상에 자외선/적외선 조정수단(1)을 구비하여 구성한다.2 is a configuration diagram of the liquid crystal projector optical device of the present invention, and as shown in the optical device of the liquid crystal projector according to the present invention, a light source 1 and a reflector 2 reflecting light emitted from the light source 1 are provided. And UV / IR selective mirror 3 for reflecting visible light components from the incident light from reflector 2 and transmitting ultraviolet / infrared components, and UV / IR among light reflected from UV / IR selective mirror 3. The IR component cuts, the UV / IR cutting filter 4 for transmitting only visible light components, the condensing lens 5 for condensing the light transmitted from the UV / IR cutting filter 4, and an image signal according to the image signal. A liquid crystal composed of a liquid crystal panel 6 to be implemented, a projection lens 7 for magnifying and projecting image information from the liquid crystal panel 6, and a screen 8 for forming an image projected on the projection lens 7 and magnifying. In the optical device of the projector, the center of the light source (1) and the UV / IR cutting filter (4) An ultraviolet / infrared ray adjusting means 1 is provided on the optical axis to be connected.

상기 자외선/적외선 조정수단(10)은 상기 UV/IR 선택미러(3)를 통과하는 자외선/적외선 성분을 모아주는 자외선/적외선 집광렌즈(11)와, 상기 자외선/적외선 집광렌즈(11)를 통과하는 빛 중에서 인체에 유해한 파장은 흡수하고, 인체에 유익한 파장만을 투과시키는 파장선택피터(12)와, 상기 파장선택필터(12)로부터 입사되는 빛을 전달해주는 자외선투사렌즈(13)와, 입사되는 빛의 광량을 적절하게 케이스(9)의 외부로 방출하는 아웃풋(Out put) 필터(14)로 구성된다.The ultraviolet / infrared light adjusting means 10 passes through the ultraviolet / infrared light condenser lens 11 and the ultraviolet / infrared light condenser lens 11 to collect the ultraviolet / infrared light components passing through the UV / IR selective mirror 3. Of the light that is harmful to the human body absorbs wavelengths, and the wavelength selection Peter 12 to transmit only the wavelengths beneficial to the human body, the ultraviolet projection lens 13 for transmitting the light incident from the wavelength selection filter 12, and the incident It consists of an output put filter 14 which appropriately emits the light quantity of light to the outside of the case 9.

또한, 상기 아웃풋필터(14)는 에너지의 양을 조절하는 에너지량 조절필터(15)와, 상기 에너지량 조절필터(15)로부터 입사되는 빛을 외부케이스(9)에서 넓은 면적으로 퍼트려주는 확사판(16)으로 구성된다.In addition, the output filter 14 is an energy amount control filter 15 for adjusting the amount of energy, and the expansion plate for spreading the light incident from the energy amount control filter 15 in a large area in the outer case (9) It consists of 16 pieces.

도면중 종래기술과 동일부분은 동일부호를 사용하였다.The same parts as in the prior art in the drawings used the same reference numerals.

이와같이 구성되는 본 고안 액정프로젝터의 광학장치는 자외선/적외선 조정수단을 구비하여 광원에서 방사되어 자연 방출되던 자외선/적외선을 적절히 조절하여 인체의 유익한 성분만을 방출하게 됨으로써, 광원의 에너지 효율이 극대화되고, 장치의 인체에 대한 안정성이 향상되는 효과가 있다.The optical device of the liquid crystal projector of the present invention configured as described above has ultraviolet / infrared ray adjusting means to properly control ultraviolet rays / infrared rays emitted from the light source to emit only beneficial components of the human body, thereby maximizing energy efficiency of the light source. There is an effect of improving the stability of the device to the human body.

Claims (3)

광원(1)과, 상기 광원(1)으로부터 발광되는 빛을 반사하는 반사경(2)과, 상기 반사경(2)으로부터 입사되는 빛 중 가시광선 성분은 반사하고 자외선/적외선 성분은 투과시키는 자외선/적외선 선택미러(3)와, 상기 자외선/적외선 선택미러(3)로부터 반사되는 빛 중 자외선/적외선 성분은 깍아주고 가시광선 성분만을 투과시키는 자외선/적외선 커팅필터(4)와, 상기 자외선/적외선 커팅필터(4)에서 투과되는 빛을 집광하는 집광렌즈(5)와, 화상신호에 따라 화상을 구현하는 액정판넬(6)과, 상기 액정판넬(6)로부터의 화상정보를 확대 투사하는 투사렌즈(7)와, 상기 투사렌즈(7)에서 확대투사되는 화상이 결상되는 스크린(8)으로 구성되는 액정 프로젝터의 광학장치에 있어서, 상기 광원(1)과 자외선/적외선 커팅필터(4)의 중심을 연결하는 광축상에 자외선/적외선 조정수단(10)을 구비하여 구성함을 특징으로 하는 액정 프로젝터의 광학장치.A light source 1, a reflector 2 that reflects light emitted from the light source 1, and an ultraviolet / infrared ray that reflects visible light components and transmits ultraviolet / infrared components of light incident from the reflector 2 An ultraviolet / infrared cutting filter 4 which cuts off the ultraviolet / infrared component of the light reflected from the selection mirror 3 and the ultraviolet / infrared selection mirror 3 and transmits only visible light components, and the ultraviolet / infrared cutting filter A condenser lens 5 for condensing the light transmitted by (4), a liquid crystal panel 6 for realizing an image according to an image signal, and a projection lens 7 for enlarging and projecting image information from the liquid crystal panel 6; And an optical device of a liquid crystal projector composed of a screen (8) on which an image projected by the projection lens (7) is imaged, the center of the light source (1) and the ultraviolet / infrared cutting filter (4) are connected. UV / IR adjustment on the optical axis An optical device of a liquid crystal projector, characterized in that the configuration comprises a stage (10). 제 1항에 있어서, 상기 자외선/적외선 조정수단(10)은 상기 자외선/적외선 선택미러(3)를 통과하는 자외선/적외선 성분을 모아주는 자외선/적외선 집광렌즈(11)와, 상기 자외선/적외선 집광렌즈(11)를 통과하는 빛 중에서 인체에 유익한 파장만을 선별하여 투과시키는 파장선택필터(12)오, 상기 파장선택필터(12)로부터 입사되는 빛을 전달해주는 자외선 투사렌즈(13)와, 입사되는 빛의 광량을 적절하게 케이스(9)의 외부로 방출하는 아웃풋필터(14)로 구성됨을 특징으로 하는 액정 프로젝터의 광학장치.The ultraviolet / infrared light collecting lens (11) of claim 1, wherein the ultraviolet / infrared light adjusting means (10) collects the ultraviolet light / infrared light components passing through the ultraviolet light / infrared light selection mirror (3). A wavelength selective filter 12 for selecting and transmitting only wavelengths beneficial to the human body from the light passing through the lens 11, an ultraviolet projection lens 13 for transmitting light incident from the wavelength selective filter 12, and incident light Optical device of a liquid crystal projector characterized by consisting of an output filter (14) for appropriately emitting the light amount of light to the outside of the case (9). 제2항에 있어서, 상기 아웃풋필터(14)는 에너지의 양을 조절하는 에너지량 조절필터(15)와, 상기 에너지량 조절필터(15)로부터 입사되는 빛을 외부케이스(9)에서 넓은 면적으로 퍼트려주는 확산판(16)으로 구성됨을 특징으로 하는 액정 프로젝터의 광학장치.According to claim 2, The output filter 14 is an energy amount control filter 15 for adjusting the amount of energy, and the light incident from the energy amount control filter 15 in a large area in the outer case (9) Optical device of a liquid crystal projector, characterized in that consisting of a spreading plate 16 to spread.
KR92025154U 1992-12-11 1992-12-11 Light device of liquid crystal projector KR0119804Y1 (en)

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KR92025154U KR0119804Y1 (en) 1992-12-11 1992-12-11 Light device of liquid crystal projector

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KR940016910U KR940016910U (en) 1994-07-25
KR0119804Y1 true KR0119804Y1 (en) 1998-07-15

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