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1. 发明专利

JPWO2018061377A1 再生装置及び再生方法审中-公开
公开(公告)号：JPWO2018061377A1
公开(公告)日：2019-07-11
申请号：JP2017024443
申请日：2017-07-04
申请人：ソニーセミコンダクタソリューションズ株式会社
发明人：関口浩司 , 堀籠俊宏 , 山本健二 , 黒川光太郎
IPC分类号： G11B7/1356 , G11B20/10 , G11B7/005
摘要：重ね合わせ光の断面をタンジェンシャル方向及び/又はラジアル方向に複数の領域に分割し、分割した領域と対応する複数の重ね合わせ光を使用して、ほぼ0°の位相差を与えた第1の信号光と参照光の組と、ほぼ180°の位相差を与えた第2の信号光と参照光の組と、ほぼ90°の位相差を与えた第3の信号光と参照光の組と、ほぼ270°の位相差を与えた第4の信号光と参照光の組をそれぞれ生成する光学系と、第1の信号光と参照光の組に対応する信号(I)と、第2の信号光と参照光の組に対応する信号(J)と、第3の信号光と参照光の組に対応する信号(K)と、第4の信号光と参照光の組に対応する信号(L)を出力する受光部と、信号(I)と信号(J)の差分である信号aと、信号(K)と信号(L)の差分である信号bを演算し、信号a及びbから演算によって再生信号を得る回路とを備える再生装置である。図15

2. 发明专利

JP3864428B2 失效
公开(公告)号：JP3864428B2
公开(公告)日：2006-12-27
申请号：JP3701795
申请日：1995-02-24
IPC分类号： G02B1/08 , H01S5/022 , G11B7/09 , G11B7/12 , G11B7/123 , G11B7/13 , G11B7/131 , G11B7/133 , G11B7/135 , G11B7/1356 , G11B7/1362 , G11B7/22 , G11B11/105 , H01L31/0232 , H01S5/00 , H01S5/026 , H01S5/042

3. 发明专利

JP2003196876A OPTICAL PICKUP AND OPTICAL DISK DEVICE 审中-公开
公开(公告)号：JP2003196876A
公开(公告)日：2003-07-11
申请号：JP2001395364
申请日：2001-12-26
申请人： TEAC CORP
发明人： SHINDO HIROYUKI
IPC分类号： G11B7/00 , G11B7/125 , G11B7/1275 , G11B7/135 , G11B7/1356
摘要： PROBLEM TO BE SOLVED: To reduce the distance between a DVD laser diode and a collimator lens in an optical pickup of an optical disk device in which recording and reproducing operations are conducted for a CD and a DVD. SOLUTION: CD laser light beams from a CD laser diode 10 and DVD laser beams from a DVD laser diode 12 are multiplexed by a multiplex prism 14. An optical thin film is formed on the multiplexing surface of the prism 14 to reduce the intensity distribution of the central section of the DVD laser beams relative to the peripheral section of the beams. By making the intensity distribution of the DVD laser light beams flat by the prism 14, the focal distance of a collimator lens 16 is made shorter and the distance between the diode 12 and the lens 16 is reduced. COPYRIGHT: (C)2003,JPO

4. 发明专利

JP3392206B2 失效
公开(公告)号：JP3392206B2
公开(公告)日：2003-03-31
申请号：JP4158594
申请日：1994-03-11
IPC分类号： G11B7/125 , G11B7/135 , G11B7/1356

5. 发明专利

JP2002341116A MULTIPLE REFLECTION PRISM AND OPTICAL PICKUP DEVICE USING THE SAME 审中-公开
公开(公告)号：JP2002341116A
公开(公告)日：2002-11-27
申请号：JP2002048758
申请日：2002-02-25
申请人： SAMSUNG ELECTRONICS CO LTD
发明人： KIM DAE-SIK , JUNG SEUNG-TAE , EN TESSEI , CHO KUN-HO
IPC分类号： G02B5/04 , G11B7/12 , G11B7/124 , G11B7/135 , G11B7/1356
摘要： PROBLEM TO BE SOLVED: To provide a waveguide type multiple reflection prism with which the height of an optical system is made low and a thin optical pickup device adopting the prism. SOLUTION: The device is characterized by the fact that the multiple reflection prism is composed in a way that a light beam which is made incident from a light source side is guided while reducing the size in the height direction and is reflected from a plane, which is inclined by less than 45 deg. with respect to a horizontal plane, to the direction of the height, so that the height of the optical system is reduced without decreasing the light beam. Thus, the incident beam, which has a large diameter and is made incident from the light source side to the multiple reflection prism, passes the lower end of an actuator through a position lower than the diameter, and the original diameter of the light beam is recovered when the light beam is reflected from the fourth reflection face 49 of a second prism, and the device is miniaturized and made thinner while a desired numerical aperture is achieved.

6. 发明专利

JP2002245658A OPTICAL HEAD DEVICE 失效
公开(公告)号：JP2002245658A
公开(公告)日：2002-08-30
申请号：JP2001038304
申请日：2001-02-15
申请人： SANKYO SEIKI SEISAKUSHO KK
发明人： YANAGISAWA KATSUSHIGE
IPC分类号： G11B7/00 , G11B7/125 , G11B7/1275 , G11B7/135 , G11B7/1356 , G11B7/1378 , G11B7/1392
摘要： PROBLEM TO BE SOLVED: To constitute an optical head device, which records and reproduces optical recording media in a different recording format by using two kinds of laser light sources, so that there is no problem of the layout and aberrations and an optical system has a lead in magnifying power to two kinds of laser light. SOLUTION: The optical head device has its optical system made smaller in power to 2nd laser light L2 by arranging a half-mirror 7 for return light separation which partially reflects 1st laser light L1 emitted by a laser diode 4 for DVD and partially transmits return light from the optical recording medium D to make it travel to a photodetecting element 9 on the optical path from the laser diode 4 for DVD to an optical recording medium D and a relay lens 8 which has positive power on the optical path from a laser diode 5 for CD to a prism 6 together with a grating lens 14.

7. 发明专利

JP2002216372A OPTICAL PICKUP DEVICE 失效
公开(公告)号：JP2002216372A
公开(公告)日：2002-08-02
申请号：JP2001014428
申请日：2001-01-23
申请人： PIONEER ELECTRONIC CORP
发明人： OGASAWARA MASAKAZU , ARAKI YOSHITSUGU
IPC分类号： G11B7/09 , G11B7/095 , G11B7/13 , G11B7/131 , G11B7/135 , G11B7/1353 , G11B7/1356 , G11B7/1378
摘要： PROBLEM TO BE SOLVED: To provide an optical pickup device which can obtain a tracking error signal by a DPP method when many kinds of optical disks different in the optical disk structure are recorded/reproduced, and which can use a CTC method even in the case of reproducing any optical disk. SOLUTION: The optical pickup device including an irradiation optical system, an optical detection optical system, and a servo signal operation part 410 is equipped with a grating 32 element which is disposed in the optical path of an optical beam of the irradiation optical system, and which is orientated so as to generate 0th order diffracted light, ±1st order diffracted light, and ±2nd order diffracted light from the optical beam, to form respective ±2nd order diffracted light spots on the tracks adjacent to both sides of the track on which a 0th order diffracted light spot is formed, and to form ±1st order diffracted light spots on respective centers of the 0th order diffracted light and the ±2nd order diffracted light, wherein a photo detector 40 is equipped with independent light-receiving elements which receive returned light from the 0th order diffracted light, the ±1st order diffracted light, and the ±2nd order diffracted light spots, respectively.

8. 发明专利

JP2002183975A DEVICE AND METHOD FOR OPTICAL INFORMATION RECORDING 失效
公开(公告)号：JP2002183975A
公开(公告)日：2002-06-28
申请号：JP2000375452
申请日：2000-12-11
申请人： OPTWARE KK
发明人： HORIGOME HIDEYOSHI
IPC分类号： G11B7/0045 , G11B7/0065 , G11B7/007 , G11B7/085 , G11B7/09 , G11B7/095 , G11B7/12 , G11B7/123 , G11B7/125 , G11B7/128 , G11B7/135 , G11B7/1356 , G11B7/1374 , G11B7/1376
摘要： PROBLEM TO BE SOLVED: To record information by using a practical light source and by using holography in each information recording region while moving a recording medium having a plurality of information recording regions. SOLUTION: When information is to be recorded in the information recording region 7 of the recording medium, the irradiation position 101 of the information light and the referential light for recording is moved for a prescribed period to follow up the one information recording region 7 which moves. Thus, the one information recording region 7 is continuously irradiated with the information light and the referential light for recording for a prescribed period, and the information is recorded in the information recording region 7 by the interference pattern produced by the interference between the information light and the referential light for recording.

9. 发明专利

JP2002025096A SEMICONDUCTOR LIGHT SOURCE, OPTICAL PICKUP HEAD DEVICE AND INFORMATION RECORDING AND REPRODUCING DEVICE 失效
公开(公告)号：JP2002025096A
公开(公告)日：2002-01-25
申请号：JP2000206586
申请日：2000-07-07
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： KADOWAKI SHINICHI , KANEUMA YOSHIAKI
IPC分类号： G02B5/04 , G02B5/18 , G02B5/32 , G11B7/00 , G11B7/09 , G11B7/125 , G11B7/127 , G11B7/13 , G11B7/131 , G11B7/135 , G11B7/1353 , G11B7/1356 , G11B7/1362 , G11B7/1365
摘要： PROBLEM TO BE SOLVED: To provide an inexpensive semiconductor light source package or the like with few components using a non-polarizing prism. SOLUTION: The light source package is provided with a first light source to emit a first beam, a second light source to emit a second beam different from the first beam, and a polarization part for deflecting the first or the second incident beam to emit it as a third beam. The polarization part is provided with a first deflecting means to deflect the first incident beam, and a second deflecting means to deflect the second incident beam. The optical axes of the first beam deflected by the first deflecting means and the second beam deflected by the second deflecting means are substantially the same.

10. 发明专利

JP2001256654A OPTICAL INFORMATION RECORDING DEVICE, OPTICAL INFORMATION REPRODUCING DEVICE, OPTICAL INFORMATION RECORDING/ REPRODUCING DEVICE AND OPTICAL INFORMATION RECORDING MEDIUM 失效
公开(公告)号：JP2001256654A
公开(公告)日：2001-09-21
申请号：JP2000067989
申请日：2000-03-13
申请人： OPTWARE KK
发明人： HORIGOME HIDEYOSHI , INOUE MITSUTERU , FUJII TOSHITAKA
IPC分类号： G03H1/02 , G03H1/04 , G03H1/26 , G11B7/0055 , G11B7/0065 , G11B7/125 , G11B7/128 , G11B7/135 , G11B7/1356 , G11B11/105
摘要： PROBLEM TO BE SOLVED: To record information by a three-dimensional interference pattern, so as to delete a part of information to an optical information recording medium. SOLUTION: The optical information recording medium 1 is provided with an information recording layer 3, consisting of magneto-optical recording material. In a pickup 11 of an optical information recording/reproducing device, a laser beam exited from a light source device 20 is modulated spatially by a space light modulator 22 to generate information light, and a phase of the laser beam exited from the light source device 20 is modulated spatially by a phase space light modulator 16, to generate recording a reference light whose phase is modulated spatially. The information recording layer 3 of the optical information recording medium 1 is irradiated by information light and recording reference light. A magnetic field is applied to the information recording layer 3 by an electromagnetic coil 30. A three-dimensional magnetization distributing pattern which corresponds to the interference pattern between information light and recording reference light is formed within the information recording layer 3.

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