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1. 发明专利

JP6136520B2 光情報記録装置有权
公开(公告)号：JP6136520B2
公开(公告)日：2017-05-31
申请号：JP2013088827
申请日：2013-04-19
申请人：国立大学法人宇都宮大学
发明人：茨田大輔
IPC分类号： G11B7/135 , G11B7/128 , G11B7/1353 , G11B7/1369 , G03H1/04 , G11B7/0065

2. 发明专利

JP4158702B2 Playback or recording device for different optical recording media 有权
公开(公告)号：JP4158702B2
公开(公告)日：2008-10-01
申请号：JP2003551779
申请日：2002-11-27
申请人：トムソンライセンシングThomson Licensing
发明人：イエルゲンカーデン
IPC分类号： G11B7/004 , G11B7/125 , G11B7/128
CPC分类号： G11B7/127 , G11B7/125 , G11B7/126 , G11B7/128

3. 发明专利

JP2003228849A OPTICAL INFORMATION RECORDING APPARATUS AND METHOD, OPTICAL INFORMATION REPRODUCING APPARATUS AND METHOD, AND OPTICAL INFORMATION RECORDING/REPRODUCING APPARATUS AND METHOD 审中-公开
公开(公告)号：JP2003228849A
公开(公告)日：2003-08-15
申请号：JP2002026333
申请日：2002-02-04
申请人： OPTWARE KK
发明人： HORIGOME HIDEYOSHI , KINOSHITA SHOJI , RIN HANBAI , KUMAGAI KENICHIRO
IPC分类号： G02B5/32 , G11B7/0045 , G11B7/0065 , G11B7/007 , G11B7/085 , G11B7/09 , G11B7/125 , G11B7/1275 , G11B7/128 , G11B7/135 , G11B7/1356 , G11B7/1369 , G11B7/24
摘要： PROBLEM TO BE SOLVED: To carry out recording or reproduction of information by using holography, and to constitute a small optical system without reducing an amount of information. SOLUTION: While carrying out a servo, a recording medium is irradiated with position control light being red light so as to converge the light with the smallest diameter on the reflection plane 5a of the recording medium. In recording, the information recording layer 3 of the recording medium is irradiated with information light 61 being green light and recording reference light 62 coaxially from one plane side and so as to have the smallest diameters at the same position 60 distant from the reflection plane 5a. Information is recorded on the information recording layer 3 with an interference pattern produced by an interference between the information light before being incident on the reflection plane 5a and the recording reference light after being reflected by the reflection plane 5a, and an interference pattern produced by an interference between the recording reference light before being incident on the reflection plane 5a and the information light after being reflected by the reflection plane 5a. COPYRIGHT: (C)2003,JPO

4. 发明专利

JP3089280B2 失效
公开(公告)号：JP3089280B2
公开(公告)日：2000-09-18
申请号：JP26176795
申请日：1995-10-09
IPC分类号： G11B7/24 , G11B7/00 , G11B7/004 , G11B7/005 , G11B7/007 , G11B7/125 , G11B7/128 , G11B7/26

5. 发明专利

JPH087873B2 失效
公开(公告)号：JPH087873B2
公开(公告)日：1996-01-29
申请号：JP15485583
申请日：1983-08-26
IPC分类号： G11B7/00 , G11B7/004 , G11B7/0055 , G11B7/09 , G11B7/12 , G11B7/125 , G11B7/128 , G11B7/135 , G11B7/30 , G11B27/36

6. 发明专利

JPH0627913B2 失效
公开(公告)号：JPH0627913B2
公开(公告)日：1994-04-13
申请号：JP27048884
申请日：1984-12-21
申请人： SONY CORP
发明人： KUWABARA SHINICHIRO
IPC分类号： G02F1/01 , G02F1/03 , G11B7/125 , G11B7/128

7. 发明专利

JPH04265534A OPTICAL WAVEGUIDE RECORDING MEDIUM REPRODUCING DEVICE 失效
公开(公告)号：JPH04265534A
公开(公告)日：1992-09-21
申请号：JP2475391
申请日：1991-02-19
申请人： TANNO NAOHIRO , PIONEER ELECTRONIC CORP
发明人： TANNO NAOHIRO , TOMA TERUO , CHIKUMA KIYOBUMI
IPC分类号： G11B7/00 , G11B7/003 , G11B7/005 , G11B7/12 , G11B7/1245 , G11B7/125 , G11B7/128 , G11B7/135 , G11B7/1381
摘要： PURPOSE:To reduce the size of the reproducing optical system of an optical waveguide recording medium reproducing device by providing an optical frequency modulation element modulating the frequency of a laser beam between a light emitting means and a light split means. CONSTITUTION:In the optical system reading recorded information on an optical waveguide recording medium 1 and reproducing it, an optical frequency modulation element 33 modulating light from a superluminescent diode (SLD)35 is provided between the SLD35 of a light source and a beam splitter 36. The element 33 consists of a ultrasonic light modulation element 33a and a slit 33b, and drives the element 33a with drive voltage whose frequency is modulated, diffracts the outgoing light from the SLD35 and limits the space spectrum of it with the slit 33b. A part of the diffracted light passes through the slit 33b. Since the voltage driving the element 33a was modulated, the pitch of an elastic wave A formed within the element 33a is modulated and therefore the diffraction angle of the light at a same frequency is changed and the frequency of the light passing through the slit 33b can be changed.

8. 发明专利

JPH04103044A OPTICAL AXIS CONTROLLER 失效
公开(公告)号：JPH04103044A
公开(公告)日：1992-04-06
申请号：JP22049390
申请日：1990-08-22
申请人： RICOH KK
发明人： ENDO HIDEYASU
IPC分类号： G02B26/10 , B23K26/042 , G11B7/125 , G11B7/1263 , G11B7/1267 , G11B7/128 , G11B7/135 , G11B7/26
摘要： PURPOSE:To stabilize the optical axis and the light quantity by modulating a laser light from two different directions and changing the optical axis direction of the laser light. CONSTITUTION:When the advance direction of an ultrasonic wave of a first A/O modulator 3a is set as the X axis direction,a nd the advance direction of an ultrasonic wave of a second A/O modulator 3b is set as the Z axis direction, a first A/O modulator 3a controls the optical axis direction and the light quantity of a laser light from the X axis direction, and a second A/O modulator 3b controls the optical axis direction and the light quantity of the laser light from the Z axis direction. That is, a result of detection of a four-split photodiode is fed back to the A/O modulators 3a, 3b, and by utilizing a deflecting function of the A/O modulators 3a, 3b, the two-axis control of the X axis direction of the Z axis direction is executed and the optical axis can be stabilized. In such a way, both of the optical axis and the light quantity of the laser light can be stabilized with high accuracy.

9. 发明专利

JPS6356613B2 失效
公开(公告)号：JPS6356613B2
公开(公告)日：1988-11-08
申请号：JP10901481
申请日：1981-07-13
申请人： CANON KK
发明人： OKUMURA ICHIRO , NISHIMOTO YOSHIBUMI
IPC分类号： G02F1/03 , G11B7/09 , G11B7/125 , G11B7/128 , G11B7/135 , G11B7/1374

10. 发明专利

JPS5812143A INPUT AND OUTPUT DEVICE OF OPTICAL INFORMATION 失效
公开(公告)号：JPS5812143A
公开(公告)日：1983-01-24
申请号：JP10901481
申请日：1981-07-13
申请人： CANON KK
发明人： OKUMURA ICHIROU , NISHIMOTO YOSHIBUMI
IPC分类号： G02F1/03 , G11B7/09 , G11B7/125 , G11B7/128 , G11B7/135 , G11B7/1374
摘要： PURPOSE:To project a light beam at a prescribed position of a recording medium with a simple constitution, by controlling an electric field which is applied to an electro-optical crystal element. CONSTITUTION:A laser light L1 radiated from a light source 1 is made incident obliquely to a face 10a of an electro-optical crystal element 10 via a collimator lens 2 and then deflected by a controlled electric field which is applied to the element. This angle of deflection is radiated to a desired track of a disk 7 and then irradiated in the form of microspots on the surface of the disk 7 via a fixed mirror 12 and an objective lens 13. A laser light L2 reflected by the disk 7 reaches a photodiode 8, and the information recorded on the disk 7 is read.

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