KR0173712B1 - Apparatus for controlling position of light path controller for projector - Google Patents

Apparatus for controlling position of light path controller for projector Download PDF

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Publication number
KR0173712B1
KR0173712B1 KR1019950054432A KR19950054432A KR0173712B1 KR 0173712 B1 KR0173712 B1 KR 0173712B1 KR 1019950054432 A KR1019950054432 A KR 1019950054432A KR 19950054432 A KR19950054432 A KR 19950054432A KR 0173712 B1 KR0173712 B1 KR 0173712B1
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South Korea
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optical path
image display
path controller
projection image
display device
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KR1019950054432A
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Korean (ko)
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KR970057655A (en
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채송
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배순훈
대우전자주식회사
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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]
    • H04N9/3102—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators
    • H04N9/3105—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators for displaying all colours simultaneously, e.g. by using two or more electronic spatial light modulators
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
    • G02B26/0816—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements
    • G02B26/0833—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements the reflecting element being a micromechanical device, e.g. a MEMS mirror, DMD
    • 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
    • G03B33/00—Colour photography, other than mere exposure or projection of a colour film
    • G03B33/10—Simultaneous recording or projection
    • G03B33/12—Simultaneous recording or projection using beam-splitting or beam-combining systems, e.g. dichroic mirrors

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Optics & Photonics (AREA)
  • Mounting And Adjusting Of Optical Elements (AREA)
  • Projection Apparatus (AREA)

Abstract

본 발명은 장치내에 설치되는 적색, 녹색 및 청색광에 대응하는 광로조절기에 위치확인공을 형성하고 발광 및 수광소자를 설치하여 광로조절기의 위치를 정확하게 확인하고 조정할 수 있도록 된 투사형화상표시장치의 광로조절기의 위치조정장치에 관한 것으로, 그 구성은 광원으로부터의 광이 다이크로익미러(52, 54)에 의해 투과 및 반사되어 광학계를 구성하는 광로조절기(32, 34, 36)에 의해 광변조되어 투사렌즈(16)를 통해 스크린에 투사되어 영상을 구현하도록 된 투사형화상표시장치에 있어서, 상기 투사형화상표시장치의 몸체(22)에는 발광 및 수광소자(42, 44)가 설치되어있고, 상기 광로조절기(32, 34, 36)는 그의 상단부에 각각 위치확인공(32a, 34a, 36a)이 형성되어있고, 상기 발광소자(42)는 광축에 대해 소정각도(θ)를 가지며, 상기 위치확인공(32a, 34a, 36a)은 각각 수평에 대하여 소정각도(θ)를 가진 것을 특징으로 하는 투사형화상표시장치의 광로조절기의 위치조정장치.The present invention provides an optical path controller of a projection type image display device which forms a positioning hole in an optical path controller corresponding to red, green, and blue light installed in the apparatus, and installs a light emitting and receiving element to accurately identify and adjust the position of the optical path controller. Of the optical path controllers 32, 34, and 36, which are transmitted and reflected by the dichroic mirrors 52 and 54 to form an optical system. In the projection image display apparatus projected onto a screen through the lens 16 to implement an image, the body 22 of the projection image display apparatus is provided with light emitting and receiving elements 42 and 44, and the optical path controller Positioning holes 32a, 34a, and 36a are formed at upper ends thereof, respectively, and the light emitting element 42 has a predetermined angle θ with respect to the optical axis. 32a, 34a, 36 and (a) each has a predetermined angle [theta] with respect to the horizontal, the position adjusting device of the optical path controller of the projection image display device.

Description

투사형화상표시장치의 광로조절기의 위치조정장치Position adjusting device of optical path controller of projection image display device

제1도는 종래 일반적인 투사형화상표시장치의 광학계를 개략적으로 도시한 평면도.1 is a plan view schematically showing an optical system of a conventional general projection image display device.

제2도는 본 발명에 따른 투사형화상표시장치의 광로조절기의 위치조정장치를 개략적으로 나타낸 평면도이다.2 is a plan view schematically showing the position adjusting device of the optical path controller of the projection image display device according to the present invention.

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

10 : 투사형화상표시장치 22 : 몸체10: projection image display device 22: body

32, 34, 36 : 광로조절기 52, 54 : 다이크로익미러(dichroic mirrors)32, 34, 36: optical path controller 52, 54: dichroic mirrors

32a, 34a, 36a : 위치확인공 42, 44 : 발광 및 수광소자32a, 34a, 36a: positioning holes 42, 44: light emitting and light receiving elements

본 발명은 투사형화상표시장치(projector)의 광로조절기 위치조정장치에 관한 것으로, 보다 상세하게는 장치내에 설치되는 적색, 녹색 및 청색광에 대응하는 광로조절기에 위치확인공을 형성하고 발광 및 수광소자를 설치하여 광로조절기의 위치를 정확하게 조정할 수 있도록 된 투사형화상표시장치의 광로조절기의 위치조정장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical path adjuster position adjusting device of a projection image display apparatus, and more particularly, to form a positioning hole in an optical path adjuster corresponding to red, green, and blue light installed in the apparatus, The present invention relates to a position adjusting device of an optical path controller of a projection image display device, which is installed to accurately adjust the position of the optical path controller.

화상표시장치는 표시방법에 따라, 직시형화상표시장치와 투사형화상표시장치로 구분된다.An image display apparatus is classified into a direct image display apparatus and a projection image display apparatus according to a display method.

직시형 화상표시장치는 CRT(Cathode Ray Tube)등이 있는데, 이러한 CRT 화상표시장치는 화질은 좋으나 화면이 커짐에 따라 중량 및 두께의 증대와, 가격이 비싸지는 등의 문제점이 있어 대화면을 구비하는 데 한계가 있다.The direct view type image display apparatus includes a CRT (Cathode Ray Tube). The CRT image display apparatus has a good image quality but has a problem such as an increase in weight and thickness as the screen is enlarged, and a high price. There is a limit.

투사형화상표시장치는 대화면 액정표시장치(liquid Crystal Display: 이하 LCD라 칭함)등이 있는데, 이러한 대화면 LCD의 박형화가 가능하여 중량을 작게 할 수 있다. 그러나, 이러한 LCD는 편광판에 의한 광손실이 크고 LCD를 구동하기 위한 박막트랜지스터가 화소마다 형성되어 있어 개구율(광의 투과면적)을 높이는데 한계가 있으므로 광의 효율이 매우 낮다.Projection type image display devices include a large crystal display (hereinafter referred to as an LCD), and such a large screen LCD can be thinned to reduce the weight. However, the LCD has a high light loss due to the polarizing plate, and a thin film transistor for driving the LCD is formed for each pixel, so that there is a limit in increasing the aperture ratio (light transmission area).

따라서, 미합중국 Aura사에 의해 액추에이티드 미러 어레이(Actuated Mirror Arrays: 이하 AMA라 칭함)를 이용한 투사형화상표시장치가 개발되었다.Accordingly, a projection image display device using Actuated Mirror Arrays (hereinafter referred to as AMA) has been developed by Aura, USA.

상기 투사형화상표시장치는 1차원 AMA를 이용하는 것과 2차원 AMA를 이용하는 것으로 구별된다. 1차원 AMA는 거울면들이 M x 1 어레이로 배열되고, 2차원 AMA는 거울면이 M x N 어레이로 배열되어 있다. 따라서 1차원 AMA를 이용하는 투사형화상표시장치는 주사거울을 이용하여 M x 1개의 광선들을 선주사시키고, 2차원 AMA를 이용하는 투사형화상표시장치는 M x N개의 광속들을 투사시켜 M x N화소의 어레이를 가지는 영상을 나타내게 된다.The projection image display device is divided into one-dimensional AMA and two-dimensional AMA. The one-dimensional AMA has mirror surfaces arranged in an M × 1 array, and the two-dimensional AMA has mirror surfaces arranged in an M × N array. Therefore, a projection image display device using a one-dimensional AMA pre-scans M x 1 rays using a scanning mirror, and a projection image display device using a two-dimensional AMA projects M x N light beams to produce an array of M x N pixels. Branches represent images.

제1도는 종래의 투사형화상표시장치의 광학계를 개략적으로 도시한 평면도이다.1 is a plan view schematically showing an optical system of a conventional projection image display device.

상기 투사형화상표시장치의 광학계(1)는 광원(11), 소스렌즈(12), 소스스톱(13), 반사거울(14), 투사스톱(15), 투사렌즈(16), 광로조절기(20)와, 필드렌즈(17)를 포함하고 있다.The optical system 1 of the projection image display device includes a light source 11, a source lens 12, a source stop 13, a reflection mirror 14, a projection stop 15, a projection lens 16, and an optical path controller 20. ) And a field lens 17.

상기 광원(11)은 고위도의 백색광을 방사(emitting)하고, 상기 광원(11)으로부터 방사된 광은 소스렌즈(12)에 의해 접속되고, 소스스톱(13)을 투과하여 반사거울(14)에 의해 반사된다.The light source 11 emits high intensity white light, and the light emitted from the light source 11 is connected by the source lens 12, and passes through the source stop 13 to the reflective mirror 14. Is reflected by.

상기 필드렌즈(17)는 후술하는 광로조절기(20)앞에 위치하여 큰 반사각을 갖고 상기 반사미러(17)에서 반사되는 광이 손실되지 않도록 하며 광로를 줄이는 것이 바람직하다.The field lens 17 is located in front of the optical path controller 20 to be described later, and has a large reflection angle so that the light reflected from the reflection mirror 17 is not lost and the optical path is reduced.

상기 광로조절기(20)는 상기 필드렌즈(17)로부터 입사된 화소들과 대응하여 광의 경로가 조절되도록 반사시키는 거울(도시안됨)과, 이 거울이 일정경로를 가지도록 액츄에이터(도시안됨)가 M × N개가 실장된 액츄에이티드미러어레이패널(20a)로 아루어진다. 상기 액츄에이티드미러어레이패널(20a)은 M × N개의 트랜지스터들(도시되지않음)이 내장되고, 액츄에이터는 트랜지스터들과 전기적으로 연결되게 액츄에이티드미러어레이패널(20a)에 실장되어 화상신호에 의해 발생되는 전계에 의해 변형되어 상부에 실장된 거울을 일정각도만큼 경사지게 한다.The optical path controller 20 includes a mirror (not shown) for reflecting the light path to be adjusted to correspond to the pixels incident from the field lens 17, and an actuator (not shown) for the mirror to have a predetermined path. N pieces are provided with the actuated mirror array panel 20a mounted. The actuated mirror array panel 20a is equipped with M × N transistors (not shown), and the actuator is mounted on the actuated mirror array panel 20a so as to be electrically connected to the transistors, and to the image signal. Deformed by the electric field generated by the inclined mirror to be mounted on the top by a certain angle.

상기 투사렌즈(16)는 상기 광로조절기(20)에 의해 반사되어 투사스톱(15)을 통과한 광을 스크린에 투사시킨다.The projection lens 16 projects the light reflected by the optical path controller 20 and passing through the projection stop 15 to the screen.

그러나, 상기와 같은 구성된 종래 투사형화상표시장치의 광학계는 투사형화상표시장치내에 설치되는데, 투사형화상표시장치의 몸체내에 장치의 뼈대를 이루는 프레임이 위치하고 있으며 상기 프레임에 광학계를 구성하는 다수개의 부품이 고정기구에 의해 고정설치된다.However, the optical system of the conventional projection image display device configured as described above is installed in the projection image display device, and a frame constituting the skeleton of the device is located in the body of the projection image display device, and a plurality of components constituting the optical system are fixed to the frame. It is fixedly installed by the mechanism.

그러나, 종래에는 상기 광원으로부터의 광을 광변조시키는 광로조절기의 설치시에 정확한 위치를 조정하려면 프레임으로부터 고정기구를 제거하고 광로조절기 전체를 다시 위치조정해야하므로 정확한 위치를 조정하기가 어렵고 불편한 문제점이 있었다.However, in the related art, it is difficult and inconvenient to accurately adjust the position of the optical path controller by removing the fixing mechanism from the frame and repositioning the entire optical path controller in order to accurately adjust the position of the optical path controller for optically modulating the light from the light source. there was.

본 발명은 상기한 바와 같은 종래 투사형화상표시장치의 광로조절기 위치조정장치를 개선하기 위해 안출한 것으로, 장치내의 일정위치에 소정각도(θ)를 가지도록 발광 및 수광소자를 설치하고 광로조절기에 형성된 위치확인공을 통해 빔을 투사시켜 광로조절기의 정확한 위치조정이 가능하고 간편하게 위치조정을 할 수 있도록 된 투사형화상표시장치의 광로조절기 위치조정장치를 제공함에 그 목적이 있다.The present invention has been made to improve the optical path adjuster position adjusting device of the conventional projection image display device as described above, the light emitting and receiving element is installed to have a predetermined angle (θ) at a predetermined position in the device and formed in the optical path adjuster It is an object of the present invention to provide an optical path adjuster position adjusting device of a projection type image display device which enables accurate positioning of the optical path adjuster by simply projecting a beam through the positioning hole and enables easy positioning.

상기한 바와 같은 목적을 달성하기 위해 본 발명의 바람직한 일실시예에 따르면, 광원으로부터의 광이 다이크로익미러에 의해 투과 및 반사되어 광학계를 구성하는 광로조절기에 의해 광변조되어 투사렌즈를 통해 스크린에 투사되어 영상을 구현하도록 된 투사형화상표시장치에 있어서, 상기 투사형화상표시장치의 몸체에는 발광 및 수광소자가 설치되어있고, 상기 광로조절기는 그의 상단부에 각각 위치확인공이 형성되어있고, 상기 발광소자는 광축에 대해 소정각도(θ)를 가진 것을 특징으로 하는 투사형화상표시장치의 광로조절기의 위치조정장치가 제공된다.According to a preferred embodiment of the present invention to achieve the object as described above, the light from the light source is transmitted and reflected by the dichroic mirror to be optically modulated by the optical path adjuster constituting the optical system screen through the projection lens In the projection image display device to be projected on to implement an image, the body of the projection image display device is provided with a light emitting and a light receiving element, the optical path controller has a positioning hole formed at its upper end, respectively, the light emitting element Is provided with a predetermined angle [theta] with respect to the optical axis. The position adjusting device of the optical path controller of the projection image display apparatus is provided.

상기와 같이 광로조절기가 설치되어 구성된 투사형화상표시장치로부터 스크린에 영상이 투사되는 경우 스크린의 영상을 보면서 투사된 영상이 에러가 생긴 경우에는 광로조절기의 정확한 설치위치를 확인하게 되는데, 이 과정은, 장치내에 설치된 발광소자로부터 발광된 빔이 광로조절기의 위치확인공을 지나 수광소자에 도달하면 정확한 위치가 되어 이후 광로조절기를 장치내의 적당한 위치에 고정시키게 된다.When an image is projected on the screen from the projection image display device having the optical path controller installed as described above, when the projected image has an error while viewing the image on the screen, the correct installation position of the optical path controller is checked. When the beam emitted from the light emitting element installed in the device reaches the light receiving element through the positioning hole of the optical path controller, the beam becomes the correct position, and then the optical path controller is fixed to the proper position in the device.

이하 본 발명에 따른 투사형화상표시장치의 광로조절기의 위치조정장치를 첨부도면을 참조하여 상세히 설명한다.Hereinafter, the position adjusting device of the optical path controller of the projection image display device according to the present invention will be described in detail with reference to the accompanying drawings.

제2도는 본 발명에 따른 투사형화상표시장치의 광로조절기의 위치조정장치를 개략적으로 나타낸 평면도로서, 종래와 동일부분에는 동일부호를 사용하여 설명한다. 이에 도시한 바와 같이, 본 발명에 따른 투사형화상표시장치(10)는 몸체(22)가 있고, 상기 몸체(22)내에 광로조절기(32, 34, 36), 디이크로익미러(dichroic mirrors)(52,2 is a plan view schematically showing the position adjusting device of the optical path controller of the projection image display device according to the present invention, and the same reference numerals will be used to describe the same parts as in the related art. As shown in the drawing, the projection image display apparatus 10 according to the present invention includes a body 22, in which the optical path controllers 32, 34, 36, and dichroic mirrors ( 52,

54), 발광 및 수광소자(42, 44), 투사렌즈(16)등이 설치되어 있다.54), the light emitting and receiving elements 42 and 44, the projection lens 16, and the like are provided.

상기 광로조절기(32, 34, 36)는 각각 적색, 녹색 및 청색광에 대응하여 입사광을 광변조시키는 역할을 하는데, 그의 상면에는 소정각도(θ)를 가진 위치확인공(32a, 34a, 36a)이 형성되어있다.The optical path controllers 32, 34, and 36 serve to modulate incident light corresponding to red, green, and blue light, respectively, and positioning holes 32a, 34a, and 36a having a predetermined angle θ are formed on the upper surface thereof. Formed.

상기 디이크로익미러(52, 54)는 광원으로부터의 입사광을 적색, 녹색 및 청색광으로 분리하여 투과 또는 반사시키는 역할을 한다.The dichroic mirrors 52 and 54 separate and transmit or reflect incident light from a light source into red, green, and blue light.

상기 발광소자(42)는 광축에 대해 소정각도(θ)를 가지도록 설치되고 상기 광로조절기(32, 34, 36)의 후면에 설치된 수광소자(44)에 빔을 투사하도록 설치되어있다.The light emitting element 42 is installed to have a predetermined angle θ with respect to the optical axis and is installed to project a beam onto the light receiving element 44 provided on the rear side of the optical path controllers 32, 34, 36.

상기 투사렌즈(16)는 상기 광로조절기(32, 34, 36)에 의해 광변조된 광을 스크린으로 투사시켜 영상을 구현한다.The projection lens 16 projects the light modulated by the optical path controllers 32, 34, and 36 onto a screen to implement an image.

상기와 같이 광로조절기가 설치되어 구성된 투사형화상표시장치로부터 스크린에 영상이 투사되는 경우 스크린의 영상을 보면서 투사된 영상이 에러가 생긴 경우에는 광로조절기의 정확한 설치위치를 확인하게 되는데, 이 과정은, 발광소자(42)로부터 발광된 빔이 광로조절기(32, 34, 36)의 위치확인공(32a, 34a, 36a)을 적당한 위치에 고정시키게 된다.When an image is projected on the screen from the projection image display device having the optical path controller installed as described above, when the projected image has an error while viewing the image on the screen, the correct installation position of the optical path controller is checked. The beam emitted from the light emitting element 42 fixes the positioning holes 32a, 34a, 36a of the optical path controllers 32, 34, 36 in an appropriate position.

상기 실시예에서 설명한 바와 같이, 본 발명에 따른 투사형화상표시장치의 광로조절기의 위치조정장치에 의하면 스크린에 투사되는 영상의 화질에 영향을 주는 광로조절기의 정확한 위치확인이 용이한 효과가 있다.As described in the above embodiments, the position adjusting device of the optical path controller of the projection image display apparatus according to the present invention has an effect of easily determining the exact position of the optical path controller affecting the image quality of the image projected on the screen.

Claims (1)

광원으로부터의 광이 다이크로익미러(52, 54)에 의해 투과 및 반사되어 광학계를 구성하는 광로조절기(32, 34, 36)에 의해 광변조되어 투사렌즈(16)를 통해 스크린에 투사되어 영상을 구현하도록 된 투사형화상표시장치에 있어서, 상기 투사형화상표시장치의 몸체(22)에는 발광 및 수광소자(42, 44)가 설치되어있고, 상기 광로조절기(32, 34, 36)는 그의 상단부에 각각 위치확인공(32a, 34a, 36a)이 형성되어있고, 상기 발광소자(42)는 광축에 대해 소정각도(θ)를 가지며, 상기 위치확인공(32a, 34a, 36a)은 각각 수평에 대하여 소정각도(θ)를 가진 것을 특징으로 하는 투사형화상표시장치의 광로조절기의 위치조정장치The light from the light source is transmitted and reflected by the dichroic mirrors 52 and 54 to be optically modulated by the optical path controllers 32, 34 and 36 constituting the optical system, and projected onto the screen through the projection lens 16. In the projection image display device configured to implement the light emitting and receiving elements (42, 44) are installed on the body 22 of the projection image display device, the optical path controllers (32, 34, 36) is located at the upper end thereof. Positioning holes 32a, 34a, and 36a are formed, respectively, and the light emitting element 42 has a predetermined angle θ with respect to the optical axis, and the positioning holes 32a, 34a, and 36a are each horizontal. Position adjusting device of the optical path controller of the projection image display device, characterized in that it has a predetermined angle (θ)
KR1019950054432A 1995-12-22 1995-12-22 Apparatus for controlling position of light path controller for projector KR0173712B1 (en)

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