baber/WOPTO huggingface dataset:
Patent KR-20010022745-A (KR)
IPC: A23B7/16
Filed: 1998-08-10
Abstract: Methods of preserving fresh fruit with fresh fruit preservatives which extend the shelf life of fresh fruit particularly fresh cut fruit, are provided. The fresh fruit preservative preserves the texture, flavor, appearance, crispness, and color of the fresh fruit, particularly the exposed skin of the fresh fruit. The method comprises the following steps: providing a solution of fruit preservative comprising: water, calcium ions; and ascorbate ions, wherein the calcium ion and ascorbate ions are present in a ion ratio of preferably from about 1.5:1 to about 2.5:1; and, applying said fruit preservative to the fruit. Preferably the fruit is then stored at a temperature which will not freeze the fruit; temperatures of -6 °C have been found not to freeze the apples. Preferably the fruit is stored at temperatures of between about -7 °C to room temperature, about 20 °C, more preferably about -2 °C to about 7 °C, most preferably from about 2 °C to about 5 °C. The invention also relates to fresh fruits preserved with the fresh fruit preservatives.
Patent KR-20010023661-A (KR)
IPC: A61K38/095
Filed: 1998-10-27
Abstract: 본 발명은 과지질혈증, 비만증 또는 죽상경화증에 걸린 포유동물에 경구 투여될 수 있고, 단일 제형이 1일 1회 투여될 수 있으며, 또한, 상기 포유동물이 섭취하는 음식물에 상관없이 하루 중 어느 때나 투여될 수 있는 신규 약제학적 조성물에 관한 것이다.  이러한 신규 조성물은 지질 저하제 및 적합한 수용성 중합체를 포함하는 혼합물을 용융압출하고, 이어서, 상기 용융압출된 혼합물을 분쇄하여 수득할 수 있는 입자를 포함한다.
Patent KR-20010023852-A (KR)
IPC: A61K9/20
Filed: 1998-09-10
Abstract: An aromatic polyanhydride having a repeating unit with structure (I) wherein Ar is a substituted or unsubstituted aromatic ring and R is a difunctional organic moiety substituted on each Ar ortho to the anhydride group. Ortho-substituted bis-aromatic dicarboxylic acid anhydride monomers and ortho-substituted bis-aromatic dicarboxylic acid intermediates thereof are also disclosed, as well as implantable medical devices, such as scaffolding implants for tissue reconstruction, drug delivery systems prepared from the aromatic polyanhydrides, as well as therapeutic oral dosage forms and treatment methods.
Patent KR-20010024722-A (KR)
Title: 커넥터 블록을 구비한 모터
IPC: H02K5/22
Filed: 1998-12-16
Abstract: 본 발명은 제1, 제2끝단과 단면을 갖는 고정자와 고정자의 일단에 장착되어 고정자의 단면형상내에 전체가 위치되는 커넥터 블럭을 갖는 전기 모터에 관한 것이다. 상기의 커넥터 블럭은 고정자에 대해 가로방향으로 외부를 향하는 복수의 전기적 콘택트를 갖는다. 엔드 실드는 고정자의 끝단을 덮는 형태로 장착되어 커넥터 블럭의 상단을 덮는다. 상기의 엔드 실드는 커넥터 블럭의 근처에서 고정자로부터 충분히 떨어져있어 커넥터 블럭의 전기적 콘택트가 가로방향으로부터 자유롭게 접속될 수 있게 한다.
Patent KR-20010033389-A (KR)
Title: 탐색 재생 모드를 가진 재생 장치
IPC: H04N5/7826
Filed: 1999-10-11
Abstract: 본 발명의 재생 장치(1)는 제 1 이송 속도(V1)와, 상기 제 1 이송 속도(V1)보다 빠른 적어도 하나의 제 2 이송 속도(V2)로 자기 테이프(4)를 이송하기 위한 자기 테이프 이송 수단(17)과, 상기 자기 테이프 이송 수단(17)에 의해 제 1 이송 속도(V1)로 이송되는 자기 테이프(4)로부터 디지털 비디오 신호를 재생하기 위한 재생 수단(8)과, 제 1 시간 간격(T1) 동안에는 제 1 이송 속도(V1)로 제 2 시간 간격(T2) 동안에는 제 2 이송 속도(V2)로 상기 자기 테이프(4)를 주기적으로 교번으로 이송하기 위하여 상기 자기 테이프 이송 수단(17)을 제어하기 위한 제어 수단(16)과, 재생된 디지털 비디오 신호를 공급하기 위한 공급 수단(16)을 포함하며, 상기 재생 수단(8)은 자기 테이프(4)에 기록되는 디지털 비디오 신호를 재생하도록 되어 있고, MPEG전송 스트림(MPEG 규격(시스템): ISO/IEC13.818-1)을 포함하고, 상기 공급 수단(26)은 제 1 시간 간격(T1) 동안에만 재생되는 디지털 비디오 신호를 공급하도록 되어 있다.
Patent KR-20010041863-A (KR)
Title: 정밀도가 개선된 액추에이터
IPC: F16H25/20
Filed: 1999-03-12
Abstract: 액추에이터는 하우징(1, 10), 모터, 액추에이팅 부재 및 상기 모터의 회전 운동에 응답하여 상기 하우징(1, 10)에 대하여 상기 액추에이팅 부재의 선형 운동을 제공하는 스크류 기구를 포함하는 액추에이터로서, 상기 스크류 기구는 스크류(5, 16: screw)와 너트(1, 17: nut)를 포함하는데 이 중 적어도 하나는 롤링 요소 베어링(2, 11)에 의해 상기 하우징(1, 10)에 대하여 회전가능하게 지지되며, 상기 롤링 요소 베어링(2, 11)은 내측 궤도면(6)과 외측 궤도면을 구비함은 물론이고 상기 궤도면들과 구름 접촉을 하게 된다.  상기 스크류 기구의 하나 이상의 요소 예컨대, 스크류(5, 16), 너트 또는 롤러들(5, 18) 및/ 또는 상기 베어링의 하나 이상의 요소 예컨대, 내측 베어링 링 또는 외측 베어링 링은, 하드 커팅 작업 예를 들어 하드 터닝(hard turning), 하드 밀링(hard milling), 하드 드릴링(hard drilling) 등에 의하여 제조되는 표면 부분을 포함한다.
Patent KR-20010041910-A (KR)
IPC: G11C5/00
Filed: 2000-01-14
Abstract: 전력소모를 최소화하기 위하여 컨피그레이션회로들을 파워다운하는 시스템은 주변모듈을 구성하는 적어도 하나의 컨피그레이션회로를 갖는다. 제 2 컨피그레이션회로는 주변모듈 및 적어도 하나의 제 1 컨피그레이션회로에 커플링된다. 제 2 컨피그레이션회로는 주변모듈을 인에이블 및 디세이블하기 위하여 사용된다. 제 2 컨피그레이션회로는 주변모듈이 디세이블된 때 그 적어도 하나의 제 1 컨피그레이션회로의 전류소모를 최소화하기 위하여 그 적어도 하나의 제 1 컨피그레이션회로를 파워다운하는 데 추가로 사용된다.
Patent KR-20010042318-A (KR)
Title: 신규 핵산 전달제, 이를 함유하는 조성물 및 용도
IPC: A61K48/00
Filed: 1999-03-30
Abstract: 본 발명은 핵산을 세포로 전달하기 위한 제제로서 유용한 신규 화합물에 관한 것이다. 신규 화합물은 특히 리포폴리아민류에 관한 것이고 적어도 사이클릭 아미딘 작용기를 포함한다. 이들은 해당 핵산을 상이한 세포형으로, 시험관내 또는 생체내 또는 생체외에서 형질감염시키는 데 유용하다.
Patent KR-20020057657-A (KR)
Title: Perpendicular magnetic recording media
Inventor: LEE BYEONG GYU
IPC: G11B5/725
Filed: 2001-01-03
Abstract: PURPOSE: A perpendicular magnetic recording medium is provided to form a grain growth prevention layer between a perpendicular alignment under layer and a perpendicular magnetic recording layer, so as to effectively control the grain growth, reduce noise and increase an SNR(Signal-to-Noise Ratio). CONSTITUTION: An under layer(22) inducing perpendicular alignment of a perpendicular magnetic recording layer(23) is accumulated between a substrate(21) and the perpendicular magnetic recording layer, in a magnetic recording medium. A grain growth prevention layer(26) preventing the grain growth of the perpendicular magnetic recording layer is formed between the perpendicular alignment under layer and the perpendicular magnetic recording layer. The perpendicular alignment under layer is made of more than one material selected in a group composed of Pt, Au, Pd and Ti. The grain growth prevention layer(26) is formed with the thickness of over 20mm, and is made of more than one material selected in a group composed of Ti, Ta, Permalloy and an alloy thereof.
Patent KR-20020061046-A (KR)
Title: Multi-camera, multi-feed and interactive virtual insertion systems and methods
Inventor: BRUNO PIERRE
IPC: G06Q50/00
Filed: 2001-01-12
Abstract: PURPOSE: A multi-camera, a system and a method for inserting interaction and multi-supply are provided to insert virtual reality to a video transmission system responding to the interaction from a viewer using multiple cameras and offering multiple output supply. CONSTITUTION: A switcher(31) receives the camera output, provides the video output combined with the cameras(10a-10c), and provides the tele-signals combined with the combined video. Tracking modules(54a-54c) track a location of a target from the camera output by respectively receiving the camera output from the cameras(10a-10c). A transformation analysis module(50) receives the tele-signals from the switcher(31) and provides the transformation between the cameras(10a-10c) in the video output and an ID of the cameras(10a-10c). A scenario server(58) defines the scripts for the output respectively including the information for an order, content and timing of the images inserted into a target position of the supplies. Graphic supply modules(561-563) provide the output supply by inserting an image into the video output based on the tracking data, the camera ID and transformation information, and the script information.
Patent KR-20020066460-A (KR)
Title: The block with a through hole using scraped ceramics and manufacturing method therof
Inventor: HO CHANG RIN
IPC: C04B38/06
Filed: 2001-02-10
Abstract: PURPOSE: Provided is a manufacturing method of permeable blocks by microwave sintering a mixture of ceramic wastes as main materials and exothermic materials as binders. Accordingly, the method enables rapid sintering for the increase of productivity. CONSTITUTION: The manufacturing method comprises the steps of: collecting ceramic wastes such as tiles, insulators and pottery containing Si, and grinding; adding 2-10vol.% of starch and 2-3% of exothermic materials such as ferrites, BaTiO3, SiC or steel slags; pressing; sintering at 1200-1300deg.C by applying 915 or 2450MHz of microwave in an oven.
Patent KR-20010074106-A (KR)
Title: C.O.P(Conquest Of Phone)
Inventor: YOO SUK JUN
IPC: H04B1/38
Filed: 2001-02-19
Abstract: PURPOSE: A phone keeper is provided to prevent the loss of a cellular phone by communicating with the cellular phone, measuring a distance from the cellular phone, and informing a space in which the cellular phone exists when a signal transmitted from a transmission portion of the cellular phone is not received. CONSTITUTION: An output sensor is attached to a cellular phone for transmitting a wavelength from a jack, and the wavelength is transmitted to a battery of the cellular phone once a 10-second or once a minute. An input terminal, a speaker, and a microphone are attached to a breastpin for performing a conversation in a space. When the cellular phone rings, a wavelength is not transmitted from the cellular phone to the breastpin. A charger of the breastpin is attached to a side of the cellular phone.
Patent KR-20010113458-A (KR)
IPC: H01L21/027
Filed: 2001-02-21
Abstract: 홀 패턴의 소밀에 관계 없이 균일하게 매립을 행할 수 있는 좋은 매립 특성을 갖고, 또한 에칭 속도가 큰 유기계 고분자 재료를 이용한 반도체 장치의 제조 방법, 반도체 장치의 제조 방법에 사용되는 매립 재료 및 반도체 장치를 제공한다. 
     홀 패턴에 유기계 고분자 재료를 복수회 도포함으로써 그 소밀에 관계 없이 균일하게 매립할 수 있다.  또한, 홀 패턴 매립용이고, 또한 색소 성분을 제외하고 에칭 속도를 크게 하고 있는 유기계 고분자 재료막(30)을 형성하며, 그 상층에 유기계 반사 방지 재료막(32)을 도포함으로써 다단계 프로세스로 균일한 막을 형성할 수 있다.  홀 패턴으로의 매립을 고려하지 않아도 되는 배선홈을 먼저 형성하는 방법을 이용할 수 있다.  이 때문에, 배선 재료를 매립하기 위한 배선홈 패턴과, 이 배선을 하층 도전성막과 전기적으로 접합하는 홀 패턴을 형성할 수가 있다.
Patent KR-20020071242-A (KR)
Title: An Electronic Schoolbook Using Wire And Wireless Protocol And Storage Media Thereof
Inventor: HUH TAE BOK
IPC: G06Q50/20
Filed: 2001-03-05
Abstract: PURPOSE: An electronic textbook system is provided to enable a user to do a homework or receive an education by receiving or transmitting data over the wireless or wired network, and to upgrade contents of the textbook by exchanging flash memory cards storing contents of a subject such as the national language, the mathematics, the science or the fine art. CONSTITUTION: The system comprises a wireless modem, an antenna(20), a flash memory card(24), a microphone(18), a speaker(16), a stylus(22), an LCD(12), and an infrared port(21). The wireless modem or the antenna(20), selected by an educatee, communicates education related data with a computer of a teacher over a wireless network. The flash memory card(24), attachable to or detachable from the system, stores the contents of education subjects. The microphone(18) and the speaker(16) are embedded at a side of the system. The LCD(12) displays the contents of the education subjects, and icons having specific functions which are selected and driven by a touch of the stylus(22). The infrared port(21), formed at one side of the system, enables the system to perform an infrared communication with external peripherals.
Patent KR-20010091931-A (KR)
Title: Method and apparatus for measuring dynamic balance
Inventor: MIURA HIROKI
IPC: G01M1/16
Filed: 2001-03-08
Abstract: PURPOSE: To provide a measuring method and device highly accurately measuring an initial unbalance deviated from an unbalance, where the prescribed unbalance is left in a rotor. CONSTITUTION: Data related to the prescribed unbalance is stored in a memory 22 as dummy value information. The vibration of a crankshaft 1 as the rotor is detected by vibration sensors 6L and 6R so as to obtain analog vibration signals WDL and WDR. The rotation angle position of the crankshaft 1 is detected by a photosensor 8, the dummy information is converted into analog dummy signals DLX, DLY, DRX, and DRY by multi-D/A converter 12L, 12R, 13L, and 13R, and these amounts are removed from the analog vibration signals so as to provide analog initial unbalance signals WL and WR. The digital initial unbalance value can be obtained by A/D converting them.
Patent KR-20020072844-A (KR)
Inventor: HONG YUN SEOK
IPC: H01L21/8244
Filed: 2001-03-13
Abstract: PURPOSE: A method for forming a node contact of an SRAM cell is provided to improve a charging speed of the SRAM cell and form a low operation voltage by using a metallic node contact between a gate of a drive transistor and a drain of an access transistor. CONSTITUTION: An interlayer dielectric(22) is formed on a surface of a semiconductor substrate(21). A polysilicon layer is deposited on the interlayer dielectric(22). A load resistance(25) is formed by patterning selectively the polysilicon layer. An oxide layer(26) and a BPSG(Boron Phosphorous Silicate Glass)(27) are formed on a whole surface of the semiconductor substrate(21). A planarization process for the BPSG layer(27) is performed. A contact hole is formed by removing selectively the BPSG layer(27), the oxide layer(26), and the interlayer dielectric(22). A Ti/TiN layer(29) is formed on the whole surface of the semiconductor substrate(21). An SOG(Spin On Glass) layer(30) is formed on the Ti/TiN layer(29). An etching back process is performed. A PE-TEOS layer(31) is formed on the whole surface of the semiconductor substrate(21).
Patent KR-20020082524-A (KR)
Title: a combustion gas leak sensing apparatus for a head gasket of engine
Inventor: LEE DEOK JAE
IPC: F02F1/00
Filed: 2001-04-24
Abstract: PURPOSE: A leak detecting apparatus of combustion gas for an engine head gasket is provided to test promptly by checking the head gasket with disassembling an engine in leaking gas, and to prevent breakage by restricting thermal deformation and inflow of coolant. CONSTITUTION: A leak detecting device of combustion gas for an engine head gasket is composed of a combustion gas detecting unit(50) installed in the upper part of a coolant tank(20) to collect combustion gas among coolant returned from an engine(10) and detect carbon monoxide among gas with a CO detecting sensor, and a display unit(60) connected to the CO detecting sensor to display detection of combustion gas for indicating leakage of combustion gas. The head gasket is checked promptly, and breakage is prevented by stopping the test and disassembling the engine in leaking gas.
Patent KR-20020083622-A (KR)
Title: Optical dispersion system capable of optional multi-sector reception
Inventor: KIM SE HUN
IPC: H04B10/2581
Filed: 2001-04-27
Abstract: PURPOSE: An optical distributed system capable of accommodating selectively plural sectors is provided to simply design a network by selectively accommodating a plurality of sectors in a branch connected to a donor. CONSTITUTION: A donor(20) transmits and receives a certain sector signal. Remotes(21a-21d,22a-22d,23a-23d) connect to each branch connected to the donor(20), and selectively process a plurality of sector signals according to each branch. The donor(20) has a switch matrix for converting a signal input according to each FA(Frequency Assignment) of each sector into an STM-1(Synchronous Transfer Mode-1) signal, and converting the STM-1 signal into an STM-16 signal transmitted to remotes(21a-21d,22a-22d,23a-23d) of each branch when performing a downstream. The switch matrix converts an STM-16 signal inputted according to each branch into a plurality of STM-1 signals, classifies the STM-1 signals into certain sector signals, and outputs a signal added according to the FA of each sector when performing an upstream. The remotes(21a-21d,22a-22d,23a-23d) have a switch matrix for converting an input STM-16 signal into a plurality of STM-1 signals, selecting a signal of a sector necessary for a current remote when performing the downstream. The switch matrix converts an input FA-classified signal into an STM-1 signal, converts the STM-1 signal into an STM-16 signal, and adds the STM-16 signal to a signal inputted from a rear remote.
Patent KR-20020084348-A (KR)
Inventor: HWANG KYOO CHEON
IPC: B01D47/02
Filed: 2001-04-30
Abstract: PURPOSE: An air cleaner is provided which improves cleaning performance by efficiently removing dust contained in air, and reduces required energy by minimizing resistance of air caused by filter. CONSTITUTION: The air cleaner comprises first case(3) in which a space is formed, and which is equipped with an inlet for sucking in air of the outside and an outlet for exhausting cleaned air; second case(5) which is sealed with being coupled to the first case, and in which a space is formed, and water for cleaning air is contained; an air rotating means(7) which is positioned at the first case to rotate air in the first case by flowing in air of the outside using rotary power of a driving source; a water rotating means(9) for rotating water in an opposite direction to the air rotated by receiving rotating power of the air rotating means; a water movement guiding member(11) for guiding the water so that water rotated by the water rotating means is moved from the circumferential part of the second case to the central part thereof; and a polluted air cleaning means(13) which is positioned at the water movement guiding member(11) so that the upper part of the polluted air cleaning means is contacted with directional air produced by the air rotating means, and the lower part of the polluted air cleaning means(13) is contacted with directional water produced by the water rotating means(9), thereby continuously performing adsorption and cleaning of dust.
Patent KR-20020084938-A (KR)
Title: Chip removel apparatus of surface for strip transfer roll
Inventor: KIM HYEONG TAE
IPC: B21C43/02
Filed: 2001-05-03
Abstract: PURPOSE: An apparatus for removing metallic chips off the surface of a strip transfer roll is provided to remove foreign materials promptly and accurately by installing a detection part adjacently to the transfer roll and ascending a foreign material removing device using an electromagnet operated by detection signals of the detection part. CONSTITUTION: The apparatus for removing metallic chips off the surface of a strip transfer roll comprises a support part comprising a pair of upper bases(11) that are coupled to both ends of a central shaft of the transfer roll, lower bases(12) that are coupled to the lower part of the upper bases(11) respectively, and upper and lower support plates that are connected between the lower bases(12); a foreign material detection part(20) comprising a plurality of sensors(22) which are installed adjacently to one side of the circumferential surface of the transfer roll with the sensors(22) being supported by a support bar so as to detect metallic foreign materials adhered onto the transfer roll; a driving part comprising a rotation shaft which is installed at the upper side of the lower support plate so that the rotation shaft is rotated by receiving power from a driving roll that is rotated in the state that the driving roll is contacted with the transfer roll, and at the center of which a plurality of driving gears(36) are installed, and a driven gear(37) which is rotationally installed at the upper support plate and engaged with each of the driving gears(36); and a foreign material removing part(40) which is elastically installed by a spring(45) at the upper side of the driven gear(37) of the driving part so that the foreign material removing part(40) is ascended by an electromagnet(50) that is operated when foreign material detection signals are generated from the foreign material detection part(20), and on the upper surface of which a brush(44) for removing foreign material adhered onto the surface of the transfer roll is installed.
Patent KR-20020085932-A (KR)
Title: Refrigerator with efficient air circulation system
Inventor: LEE JANG SEOK
IPC: F25D17/06
Filed: 2001-05-10
Abstract: PURPOSE: A refrigerator with improved efficiency of circulation of chilled air is provided to improve cooling efficiency and utilization of volume. CONSTITUTION: A refrigerator includes a centrifugal blower fan(30) placed in a freezer compartment to circulate chilled air; and a bending type evaporator(40) having a refrigerant pipe(401) and a cooling fin(402) bending in a regular direction by regular interval to cover discharge side of the centrifugal blower fan. The centrifugal blower fan and the bending type evaporator are horizontally installed in an evaporator chamber formed under the freezer compartment. Frost is formed over the whole of the evaporator thereby to allow circulation of chilled air efficient.
Patent KR-20020085966-A (KR)
Title: Combination system using set values commonly, and a method for setting values of the combination system
Inventor: KIM YONG HO
IPC: G11B19/02
Filed: 2001-05-10
Abstract: PURPOSE: A combination system sharing set values and an environment setting method for the system are provided to share environment set values input by a user with each device, thereby removing the inconvenience for the user to separately input the environment set values to the respective devices. CONSTITUTION: A combination system sharing set values includes an input element(140) for inputting environment set values as data related to operation modes of devices, a plurality of set value storing parts(115,125) mounted in the respective devices for storing data related to the environment set values, and control parts(114,123) for controlling the set value storing parts, wherein if an environment set value is input via the input element to one of the set value storing parts and data of the same kind is existing in another set value storing part, the input environment set value is stored in any one of the set value storing part under the control of the control part.
Patent KR-20030007982-A (KR)
Title: Selective spreading code generator and its method with variable linear complexity
Inventor: LEE SEONG MIN
IPC: H04J13/10
Filed: 2001-05-11
Abstract: PURPOSE: An apparatus and a method for generating a selective spreading code having a variable complexity are provided to maintain an order of sequences according to operation by one control and change a kind of code. CONSTITUTION: A first M-sequence generator(21) generates the first M-sequence of a 2¬n-1 period. A second M-sequence generator(22) generates the second M-sequence of a 2¬m-1 period. An adder(23) adds the first and second M-sequences and generates the third sequence. An r-power square circuit(24) square the third sequence to a r-power, and generates the fourth sequence. A trace circuit(25) receives the fourth sequence as m bits, and generates a spreading code with 1 bit.
Patent KR-20020089849-A (KR)
Title: Internet information security system using the new network file system
Inventor: JUN CHANG YONG
IPC: G06F15/00
Filed: 2001-05-24
Abstract: PURPOSE: A method for securing the Internet information using a new network file system is provided to maintain the data integrity through a security test for a file by making all files inputted through the Internet have to pass the FOZ(Free OS Zone) before accessing to an OS(Operating System). CONSTITUTION: In order to transmit/receive a file, a packet is encoded by using a PVPN(Peer Virtual Private Network) at a place connecting to a network such as the Internet and an intranet(S201). The data communication becomes possible only through the PVPN port among many ports(S202). The data received by the PVPN port is stored in the FOZ(S206). Because the FOZ uses a file system different from the OS in a normal state, the OS can not access to the FOZ. If a request is received from the OS(S208), the content of the file in the FOZ is viewed by making a virtual path. At this time, a test for a virus and a hacking tool is carried out(S210).
Patent KR-20020093287-A (KR)
Title: Optical pickup apparatus using an aspherical solid immersion lens
Inventor: KWON HYAK DONG
IPC: G11B11/26
Filed: 2001-06-08
Abstract: PURPOSE: An optical pick-up using an aspherical solid immersion lens is provided to produce an optical pick-up having a simple and compact structure only employing a single aspherical solid immersion lens without using an additional collimator lens or objective lens. CONSTITUTION: An optical pick-up using an aspherical solid immersion lens includes a light source(110) for generating and emitting light, a beam splitter(140) for transmitting a part of the light emitted from the light source, a solid immersion lens(180) located on an optical path between the beam splitter and an optical recording medium to focus the light that has passed through the beam splitter on the optical recording medium, and a light-receiving module(250) for receiving light reflected from the optical recording medium to detect a signal. The first face(181) of the solid immersion lens is flat and the second face(182) of the lens is aspherical. The light emitted from the light source is focused on the first face of the solid immersion lens.