baber/WOPTO huggingface dataset:
Patent KR-20070054517-A (KR)
Inventor: RHEE NAM KYOU
IPC: G09G3/20
Filed: 2005-11-23
Abstract: 본 발명은 어린이의 안전을 위한 표시 장치에 관한 것으로 반드시 표시 장치 
     를 부착한 어린이의 움직임이 있는 경우에만, 또한 일정 조도 이하의 어두운 
     곳에서만, 어린이의 동작에 따라  불규칙하게 점멸하며, 표시 장치의 움직임 
     을 감지하기 위하여  전원을 소모하지 않으며,  표시 장치의  동작을 위하여 
     외부 스위치를 필요로 하지 않으므로 소형으로 제작 가능하며, 어린이의 옷, 
     가방, 모자 및 머리 혹은 팔과 같은  신체 부위에  부착하여 사용할 수 있는 
     것을 특징으로 하는 어린이 안전용 표시 장치이다. 
       
     어린이, 표시 장치, 안전, 동작, 조도, 센서
Patent KR-20070055265-A (KR)
Inventor: KIM HYO SEOK
IPC: B62D3/12
Filed: 2005-11-25
Abstract: 항상 일정한 압력으로 랙바를 지지하여 소음 및 조타성을 개선하고, 조타각과 차속에 의하여 랙바의 가압력을 제어토록 함으로써, 능동적인 제어가 이루어지게 되어 쾌적한 조타감을 구현할 수 있는 파워 스티어링 장치의 랙 서포트 구조를 제공한다. 
     파워 스티어링에 적용되는 랙바와 로터리 밸브의 피니언이 치합되는 부위에 상기 랙바와 피니언이 일정의 압력을 가지고 치합 상태를 유지할 수 있도록 랙바를 지지하여 주는 파워 스티어링 장치의 랙 서포트 구조를 형성함에 있어서,  
     상기 랙바의 후면과 면 접촉되는 구름부재를 포함하는 랙 서포트 요크와; 상기 랙 서포트 요크의 후측에 배치되는 탄성부재와; 상기 탄성부재의 후측에 배치되는 슬라이더와; 상기 슬라이더의 후측에서 하우징에 나사 체결되는 랙 서포트 플러그와; 상기 랙 서포트 플러그의 후측에 배치되어 전자제어유닛에 의하여 제어되면서 상기 슬라이더를 전,후진시키는 액튜에이터를 포함하여 이루어지는 파워 스티어링 장치의 랙 서포트 구조를 제공한다. 
       
     	랙바, 스크류, 슬라이더
Patent KR-20070058137-A (KR)
Title: Process for balancing oil of compressors and apparatus for balancing oil of compressors in air conditioner
Inventor: KIM JU WON
IPC: F25B1/00
Filed: 2005-12-01
Abstract: A process and an apparatus for balancing oil of a compressor in an air-conditioner are provided to prevent a damage of the compressor caused by a shortage of a lubricant oil and to improve a reliability of the compressor. An apparatus for balancing oil of a compressor in an air-conditioner includes an accumulator(61), a pair of compressors(62,63), a 4-way valve(65), and an exterior heat exchanger(70). The accumulator extracts only a gas refrigerant in refrigerant supplied from an indoor unit. The compressor compresses the supplied gas refrigerant extracted from the accumulator. The 4-way valve selects a flow path of the compressed refrigerant and is connected to the compressor. The exterior heat exchanger exchanges heat between the refrigerant supplied from the 4-way valve and outdoor air.
Patent KR-20070069809-A (KR)
Title: Fabricating method of semiconductor device
Inventor: KIM IN SU
IPC: H01L21/60
Filed: 2005-12-28
Abstract: A method for manufacturing a semiconductor device is provided to efficiently remove C- and F-group formed on a bonding pad and to prevent corrosion of a bonding pad by using a laser annealing performed on an organic substance. A bonding pad is opened through an etching process with respect to a protective layer. An organic substance existing on the bonding pas is removed through a laser annealing. A laser used in the laser annealing emits laser light of 185 nm to 254 nm wavelength. The organic substance includes C- and F-group and is removed in the form of H2O and CO2 through the laser annealing. The protective layer is made of SiN and PBO(Poly Benzoxazole).
Patent KR-20070071511-A (KR)
Title: External electrode florescent lamp and backlight unit of liquid crtstal display device
Inventor: KIM JAE BUM
IPC: F21Y101/00
Filed: 2005-12-30
Abstract: An external electrode fluorescent lamp and a backlight unit of a liquid crystal display device are provided to increase the amount of stored electric charges by using a ferroelectric glass tube and a ferroelectric coating layer. A ferroelectric glass tube is filled with discharge gas. An external electrode(112) is formed to cover external wall surfaces of both sides of the ferroelectric glass tube. A ferroelectric coating layer(122) is formed to cover internal wall surfaces of both sides of the ferroelectric glass tube. A dielectric constant of the ferroelectric glass tube is 10 to 20. The ferroelectric glass tube includes a soda line-based material. The ferroelectric glass tube includes at least one of Li2O, Na2O, K2O, and BaO.
Patent KR-20050011006-A (KR)
IPC: H04W4/14
Filed: 2003-07-09
Abstract: Techniques for converting short messages between different formats (e.g., from GSM SMS to CDMA SMS) such that pertinent control information is retained without changing the fundamental structure of these message formats. A new value is defined for the Msg Encoding field in the User Data subparameter of the CDMA SMS message to indicate that the content of this message is an encapsulated GSM SMS message. The Message Type field in the User Data subparameter may be used to carry data coding scheme information for the encapsulated GSM SMS message. At a recipient mobile station, the value in the Msg Encoding field is checked to determine whether or not the CDMA SMS message includes an encapsulated GSM SMS message. If the answer is yes, then the user data in the CHARi fields of the CDMA SMS message is processed based on the data coding scheme information from the Message Type field.
Patent KR-20050067413-A (KR)
Title: Method and apparatus for a service integration system
Inventor: LELCUK ALON
IPC: H04Q3/00
Filed: 2003-09-25
Abstract: A software-implemented, distributed service integration system which provides an open environment for the development of new services, and their integration with the existing network, with the integration being performed by the service integration system administrator, which is also responsible for the service development. Thus, the procedure of developing and integrating of new services is shorter and cheaper than is common in telephony service integration systems. An example of a new service which is integrated with the existing network infrastructure includes the development by the service developer of a sophisticated billing service that uses a carrier's billing infrastructure. The inventive system also provides, through a modifiable policy defined by the system administrator, service- level control of the packet flow both within the service integration system and between the service integration system and the communications network. The inventive system also provides visibility into the signaling process to services deployed on it, offering direct communication with different protocols such as IP, SS7 etc., by means of network adaptation components.
Patent KR-20050073602-A (KR)
Title: Systems and methods for managing rates
Inventor: KLEIN RALPH WILHELM
IPC: G06Q20/10
Filed: 2003-10-10
Abstract: Systems and method for efficiently storing rate schedules and applying the rate schedules against operational events are provided. The rate schedules are represented in a database using a data structure that includes a field for storing a belief time during which the rate schedules are believed to be true. The database stores all versions of the rate schedules to ensure that complete audits of the rate schedules can be performed.
Patent KR-20050074602-A (KR)
Inventor: VAN BERKEL CORNELIS
IPC: G06K9/00
Filed: 2003-10-30
Abstract: An object sensing system (50), and method, employing electric field sensing, also known as quasi- electrostatic sensing and which may be termed cross capacitive sensing, is described. The system (50) comprises at least one electrode arrangement (30), each electrode arrangement (30) comprising one electric field sensing reception electrode (32) and two electric field sensing transmission electrodes (34, 36). One of the electric field sensing transmission electrodes (36) is driven with an alternating voltage (130) comprising at least some antiphase portions, for example an inverted signal, in comparison to an alternating voltage (120) with which the other electric field sensing transmission electrode (34) is driven. This improves the spatial precision of object sensing performed by detecting changes in the current induced in the electric field reception electrode (32). In one arrangement the two electric field sensing transmission electrodes (34, 36) are in the form of annular rings arranged around the electric field sensing reception electrode (32).
Patent KR-20050086760-A (KR)
Title: Two-layer decoding for hybrid high-definition dvd
Inventor: LIN SHU
IPC: H04N7/46
Filed: 2003-10-27
Abstract: A hybrid high-definition decoder (700) and method are disclosed, for processing signal data as a plurality of block transform coefficients for each of base layer data and enhancement layer data, where the decoder (700) includes a standard-definition decoder (710) for decoding the standard-definition data from a base layer bitstream embodying a standard-definition data sequence, a high- definition decoder (716) coupled to the standard-definition decoder for decoding the difference between the high-definition data and the standard- definition data from an enhancement layer bitstream stored as picture user data embodying a high-definition data sequence, and a two-layer composition unit (718) for composing a high-definition signal data sequence from the standard-definition data and the difference between the high-definition data and the standard-definition data.
Patent KR-20050113605-A (KR)
Title: Sub-symbol parallel interference cancellation
Inventor: DUNYAK JAMES P
IPC: H04B1/707
Filed: 2004-01-29
Abstract: Reduction of multiple access interference, in one example for asynchronous CDMA systems using long codes. In one aspect, parallel interference cancellation (PIC) implements a decoupled estimate, preferably non-linear and applied at chip intervals. According to another aspect, interference is cancelled using a technique that estimates bits for a symbol by interpolating signature waveforms for users to a common sampling lattice of the received data. According to another aspect, multi-stage, hybrid multi-stage, and reconfigurable recursive multi-stage multi-user detection architectures and corresponding processes are provided.
Patent KR-20050123104-A (KR)
Title: Purification of peptides from colostrum
Inventor: GEORGIADES JERZY ALEXANDER
IPC: C07K14/47
Filed: 2004-03-10
Abstract: The invention relates to the purification of peptides from colostrum. The method involves the addition of an alcohol such as meth anol or ethanol to the mixture in order to form an alcohol phase rich in the peptides, and a precipitate. The peptide-rich alcohol phase is subsequently recovered and subjected to further fractionation. The invention is particularly useful in the purification of colostrinin from colostrum.
Patent KR-20060002923-A (KR)
Title: Multispectral biometric sensor
Inventor: ROWE ROBERT K
IPC: A61B5/117
Filed: 2004-04-05
Abstract: Methods and systems are provided for biometric sensing. An illumination subsystem provides light at discrete wavelengths to a skin site of an individual. A detection subsystem receives light scattered from the skin site. A computational unit is interfaced with the detection system. The computational unit has instructions for deriving a spatially distributed multispectral image from the received light at the discrete wavelengths. The computational unit also has instructions for comparing the derived multispectral image with a database of multispectral images to identify the individual.
Patent KR-20050114272-A (KR)
Title: Cooling and purification of gas streams
Inventor: HECKMANN MANFRED
IPC: C08G63/78
Filed: 2004-04-07
Abstract: Disclosed is a method for purifying and cooling a dialkyl ester A) of a gas stream containing aromatic dicarboxylic acid. Said method is characterized in that the gas stream is treated with an aliphatic dihydroxy compound B) above the melting point of the dialkyl ester A) in a first stage while the gas stream is treated with an aliphatic dihydroxy compound B) above the melting point of the dihydroxy compound B) in at least one second stage.
Patent KR-20060025144-A (KR)
Title: Wiper arm for windscreen wiper
Inventor: MAYER STEPHAN
IPC: B60S1/40
Filed: 2004-04-27
Abstract: At least one spring-loaded lug (13, 14) is formed as one piece on a plastic retaining device (6) for a wiper blade (2), which is formed on a wiper arm (1), said lug engaging between the two lateral flanks (7, 8) of the support system of the wiper blade (2) and projecting beyond the lower edges (7a) of said lateral flanks (7, 8). In addition, a retaining nub (11) that protrudes laterally outwards is formed on the free end of the spring-loaded lug (13, 14). Said nub restricts the unlimited rotational displacement of the wiper blade (2) by the impact of the retaining nub (11) on the lower edge (7a) of a lateral flank (7, 8).
Patent KR-20060003109-A (KR)
Title: Water treatment devices and cartridges therefor
Inventor: TANNER JOHN D
IPC: B01D35/30
Filed: 2004-05-24
Abstract: A cartridge for treating water, the cartridge capable of releasably engaging a water treatment device. The cartridge includes a housing, an inlet for introducing untreated water into the cartridge, an outlet port for egress of treated water from the cartridge, and a treatment media for treating untreated water. The treatment media is in fluid communication with the inlet and the outlet port. The cartridge further includes a first tube having an inside surface, an outside surface, a proximal end, and a distal end, where the inside surface and/or the outside surface is a sealing surface. The cartridge further includes a second tube having an inside surface, an outside surface, a proximal end, and a distal end, where the inside surface and/or the outside surface is a sealing surface. The first tube extends from the housing and surrounds the outlet port. At least a portion of the first tube or the second tube surrounds the other such that a gap is formed between the first tube and the second tube. The gap is capable of holding a volume of water. The first tube extends outwardly from the housing and surrounds the outlet port, and the second tube extends outwardly from the housing and surrounds the first tube such that a gap is formed between the first and second tubes, the gap capable of holding from about 0.1 ml to about 6 ml of water when the cartridge is not sealingly engaged to the water treatment device, and such that the distal end of the second tube extends a greater distance than the distal end of the first tube from the housing, and such that at least one of the sealing surfaces of the second tube extends a greater distance than at least of one of the sealing surfaces of the first tube from the housing.
Patent KR-20060012634-A (KR)
Title: Estimating an edge orientation
Inventor: DE HAAN GERARD
IPC: G06T3/40
Filed: 2004-05-13
Abstract: A method of estimating an edge orientation located in a neighborhood of a particular pixel (100) of an image is disclosed. The method comprises creating a set of candidate edge orientations; evaluating the candidate edge orientations by means of computing for each of the candidate edge orientations a match error for a corresponding pair of test groups (104, 106) of pixels, on basis of a difference between pixel values of the test two groups (104, 106) of the corresponding pair of test groups of pixels; and selecting a first one of the candidate edge orientations from the set of candidate edge orientations on basis of the respective match errors and assigning the first one of the candidate edge orientations to a target block of pixels (102). An advantage of the method is that a relatively low number of computations is required. This is achieved because the estimated edge orientation is assigned to a target block of pixels (102).
Patent KR-20060015743-A (KR)
Title: Rotatable tool and a blank
Inventor: BRUHN JOHNNY
IPC: B22F3/20
Filed: 2004-06-02
Abstract: The present invention relates to a tool as well as a blank for manufacturing of the tool (10). The tool (10) is performed in solid cemented carbide and comprises a shank (11) for mounting in a rotatable spindle and chip flutes (18). Lines of intersection between the chip flutes (18) and clearance surfaces (15) form cutting edges (19) at a cutting end (16) of the tool. The flush channels (14) extend through the entire tool in order to transfer flushing medium to the cutting end (16) of the tool. The flushing channels (14) have varying pitch.
Patent KR-20060063790-A (KR)
Title: Predication instruction within a data processing system
Inventor: SEAL DAVID JAMES
IPC: G06F9/00
Filed: 2003-12-30
Abstract: Within a data processing system (2) prediction instructions (30) are provided which add conditional behavior to associated program instructions (26, 28).
Patent KR-20060017856-A (KR)
Title: Nematicidal thiazoline-containing fluorobutenes
Inventor: WATANABE YUKIYOSHI
IPC: C07D277/16
Filed: 2004-06-07
Abstract: The present invention relates to novel thiazoline-containing fluorobutenes of the formula (I) wherein R represents methyl or ethyl, and X represents hydrogen or fluoro, to a process for their preparation and to their use as nematicides.
Patent KR-20060028422-A (KR)
Title: An optical disk drive
Inventor: VAN LIEMPD CHRISTINUS A P
IPC: G11B7/13
Filed: 2004-06-24
Abstract: A single end incandescent halogen bulb has an envelope (112) having a sealed cavity (114) containing a halide material, a pinch or press seal (110) at one end, and a coiled wire filament (100) disposed in the sealed cavity (114). Filament legs (102, 104) comprise portions of the coiled wire filament (100) that have been drawn out straight so as to have a diameter which is approximately the same as a diameter of a wire from which filament (100) is formed. A first current supply (106) wire extends through the press seal (110) into the sealed cavity. This first wire (106) has a first clamp (118) formed at a terminal end thereof. The first clamp (118) clamps a first filament (102) leg to establish a first electrical connection and suspend the filament (100) in the sealed cavity (114). A second current supply wire (108) extends into and terminates within the press seal (110). This second wire (108) has a second clamp (116) which clamps a second filament leg (104) to establish a second electrical connection.
Patent KR-20060065589-A (KR)
Title: Control device of elevator
Inventor: CHIDA AKIHIRO
IPC: B66B5/00
Filed: 2004-04-27
Abstract: A control device of an elevator, wherein calculations on the control of the elevator are performed by a double system containing a first processing part and a second processing part. First clock signals from a first clock are inputted into the first processing part. Second clock signals from a second clock are inputted into the second processing part. The first and second clock signals are inputted into a clock abnormality detection circuit. The clock abnormality detection circuit counts the number of pulses of each of the first and second clock signals to detect the abnormality of the first and second clock signals by a difference in the number of pulses therebetween.
Patent KR-20060029161-A (KR)
Title: Clip based trick modes
Inventor: SHEN RICHARD CHI TE
IPC: H04N5/783
Filed: 2004-06-29
Abstract: Multi-frame trick play clips of the stored performance are selected for playing in a trick play mode, portions between the trick play clips, at least as long as the trick play clips, are skipped in the trick play mode. The trick play clips are sufficiently long and presented at a sufficiently low speed so that the content of the trick play clips can be understood by a human audience.
Patent KR-20060009404-A (KR)
Title: 휴대폰을 이용한 전자상거래 결제 방법.
Inventor: KIM KYUNG HEE
IPC: H04W4/12
Filed: 2006-01-11
Abstract: 실시 예 1. 
     종래의 SMS로 된 승인번호를 구매자 휴대폰 측으로 전송하고, 상기 승인번호를 구매자가 자신의 인터넷에 연결된 통신 기기상의 결제 창에 입력하고, 결제 서비스 서버가 구매자 휴대폰 측으로 전송한 승인번호와 구매자가 결제 창에 입력한 승인번호를 비교하여 본인 여부를 판단하는 종래 기술을 이용하고, 이와 함께 본인 확인을 위하여 구매자의 휴대폰 위치를 추적하여 결제 위치가 구매자의 이동 통신사에 신고 된 휴대폰 주소지와 일정 범위 내에서 일치하면 불법으로 복제된 휴대폰이 아니라 본인의 휴대폰으로 결제를 요청한다고 판단하여 불법 복제 휴대폰이 아닌 구매자 본인 휴대폰으로 결제를 요청한다고 판단하고, 본인이 맞으면, 이동 통신사의 회원 신용 평가에 따라 결제를 결정하는 종래 방법을 이용하여 후불로 구매자 휴대폰 통신 요금 청구서에 구매 대금을 합하여 청구하여 결제되게 하는 방법을 포함하는 것을 특징으로 하는 휴대폰을 이용한 전자상거래 결제 방법. 
     실시 예 2. 
     본인 확인을 위하여, 인터넷상에 접속된 구매자 통신 기기 측으로 승인번호를 전송하고, 구매자 휴대폰 측으로는 결제 서비스 서버 접속용 URL이 첨부된 SMS를 전송하고, 이를 이용하여 구매자가 자신의 휴대폰을 이용하여 결제 서비스 서버 측에 접속되어서, 인터넷상의 판매자 서버에 연결된 자신의 통신 기기 측으로 제시된 상기 승인번호를 자신의 휴대폰 상에 입력하여 결제 서비스 서버 측으로 전송하 고, 이에 따라, 결제 서비스 서버는 인터넷 상에서 구매자 측으로 전송한 승인번호와 구매자 휴대폰으로부터 제시받은 승인번호가 일치하면, 결제 요청 자 본인이 결제 창에 입력된 휴대폰번호의 휴대폰을 소유하고 있다고 판단하고, 이에 추가하여 구매자 휴대폰의 위치를 추적하여 추적된 구매자 휴대폰의 위치와, 이동 통신사에 신고 된 휴대폰 소유자 주소 및/또는 은행 측이 DB에 가지고 있는 계좌 소유자 주소와 비교하여서, 추적된 휴대폰 위치가 상기 주소지들과 일정 범위 내에서 일치하면 본인으로 판단하고, 이동 통신사가 자신이 보유하고 있는 구매자의 통신 요금 자동이체 계좌번호를 구매자 은행 측으로 결제 서비스 서버 측을 통하거나, 도는 직접 통보하고, 이에 따라 구매자 은행이 구매 대금을 구매자 휴대폰 통신 요금이 자동 이체되는 계좌에서 판매자 계좌 측으로 이체시켜서 결제를 완료하는 방법을 포함하는 것을 특징으로 하는 휴대폰을 이용한 전자상거래 결제 방법. 
     실시 예 3. 
     구매자 휴대폰의 결제 위치가 추적되고, 또한 결제 위치와 휴대폰번호의 주소지를 상호 비교되어 본인 여부를 확인하고, 본인이 맞으면 이동 통신사는 결제 서비스 서버 측으로 구매자 은행명과, 자동이체 계좌번호와, 추적된 구매자 휴대폰 위치를 통보하고, 이에 따라, 결제 서비스 서버가 판매자 계좌번호와, 구매자의 출금 계좌(통신 요금 자동 이체 계좌)와 금액 정보와 구매자 신상 정보(주민등록번호, 휴대폰번호 등)를 구매자 은행 서버 측으로 전송하면서 계좌 이체를 요청하고, 이와 동시에 결제 서비스 서버는 구매자 휴대폰 측으로 구매자 은행 접속용 URL이 첨부된 결제 확인용 SMS를 전송하고, 이에 따라 구매자 휴대폰이 자신의 결제 은행  측으로 접속되어 구매자 휴대폰 통신 요금이 자동 이체되는 계좌의 비밀번호만을 입력하여 구매자 은행 측으로 전송하면, 구매자 은행은 계좌 비밀번호 맞는지를 확인하여 본인 여부를 확인하고, 또한 구매자 결제 위치와 은행이 보유하고 있는 구매자 계좌의 주소지 정보를 은행 서버가 비교하여 일정 범위 이내에서 일치하면 본인임으로 재확인하여서, 본인임이 확인되면, 구매자 은행 서버는 구매 대금을 구매자의 이동 통신 요금이 자동이체 되는 계좌에서 구매 대금을 판매자 계좌 측으로 이체시켜서 결제되게 하는 방법을 포함하는 것을 특징으로 하는 휴대폰을 이용한 전자상거래 결제 방법.
Patent KR-20070077682-A (KR)
Title: Display device
Inventor: SONG IK SUN
IPC: G02F1/1333
Filed: 2006-01-24
Abstract: A display device is provided to include a ground conductive layer and to electrically connect the ground conductive layer with a receiving container. A display panel(310) displays an image. A receiving container(330) includes a bottom plate(331) located opposite to the display panel. The receiving container also includes a sidewall extended from the bottom plate along the edge of the display panel. A PCB(Printed Circuit Board)(340) includes a ground conductive layer(347) exposed toward the rear of the bottom plate and is electrically connected with the display panel. A conductive adhesive member(360) is interposed between the ground conductive layer and the rear and electrically connects the ground conductive layer and the receiving container. The PCB includes a control PCB(341). The control PCB outputs a control signal for controlling the timing of a panel driving signal applied to the display panel. A source PCB(345) outputs the panel driving signal to the display panel. A connecting FPCB(Flexible PCB)(350) electrically connects the source and control PCBs.
Patent KR-20070077965-A (KR)
Title: Apparatus and method for preventing splitting of projected image
Inventor: WON JONG HWA
IPC: H04N5/21
Filed: 2006-01-25
Abstract: An apparatus and a method for preventing the distortion of an image are provided to allow an optical scanner to perform a normal seesaw operation even while the optical scanner, into which a signal for instructing normal seesaw operation is inputted, is abnormal. A deflection sensing unit(410) senses the deflection degree of an optical scanner when the optical scanner receives no signal or a horizon instruction signal. A driving signal adjusting unit(430) adjusts a predetermined candidate driving signal in response to the sensed result, and outputs the adjusted candidate drive signal as a mirror driving signal. The candidate driving signal is a signal for instructing a normal operation of the optical scanner, and the horizon instruction signal is a signal for instructing non-deflection of the optical scanner. The optical scanner is normally operated in response to the adjusted result.
Patent KR-20060087440-A (KR)
Inventor: KATO SHIGEKI
IPC: H04N5/74
Filed: 2006-01-26
Abstract: 리어 프로젝터(1)는 광원과, 이 광원으로부터의 광속을 화상 정보에 따라 변조하여 화상을 형성하는 광변조 장치 및 형성 화상을 확대 투사하는 투사 광학 장치를 갖는 화상 형성 장치와, 투사 광학 장치로부터 사출된 광속을 반사하는 반사 미러(2A)와, 반사한 광속이 투영되는 스크린(2B)과, 이들을 수납하는 상자형의 하우징을 구비한다.  하우징은 화상 형성 장치를 수납하는 제 1 하우징부(3)와, 스크린(2B) 및 반사 미러(2A)가 설치되는 제 2 하우징(2)을 구비한다.  광변조 장치는 제 2 하우징부(2) 내부의 공간을 포함하는 밀폐 공간(S)내에 수납되고, 제 2 하우징부(2)는 스크린(2B)이 설치되는 측면과, 상기 측면에 대향하고 반사 미러(2A)가 간극을 설치하여 배치되는 다른 측면(211)을 구비하며, 상기 간극에는 광변조 장치를 냉각한 공기가 순환하는 유로가 형성되어 있다.