TWI256632B - Optical power calibration fixture - Google Patents
Optical power calibration fixtureInfo
- Publication number
- TWI256632B TWI256632B TW093114002A TW93114002A TWI256632B TW I256632 B TWI256632 B TW I256632B TW 093114002 A TW093114002 A TW 093114002A TW 93114002 A TW93114002 A TW 93114002A TW I256632 B TWI256632 B TW I256632B
- Authority
- TW
- Taiwan
- Prior art keywords
- compact disc
- optical power
- power calibration
- optical
- access device
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/22—Apparatus or processes for the manufacture of optical heads, e.g. assembly
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
- G11B7/126—Circuits, methods or arrangements for laser control or stabilisation
- G11B7/1267—Power calibration
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW093114002A TWI256632B (en) | 2004-05-18 | 2004-05-18 | Optical power calibration fixture |
US11/131,178 US20050259540A1 (en) | 2004-05-18 | 2005-05-18 | Optical power adjusting tool |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW093114002A TWI256632B (en) | 2004-05-18 | 2004-05-18 | Optical power calibration fixture |
Publications (2)
Publication Number | Publication Date |
---|---|
TW200539156A TW200539156A (en) | 2005-12-01 |
TWI256632B true TWI256632B (en) | 2006-06-11 |
Family
ID=35375022
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW093114002A TWI256632B (en) | 2004-05-18 | 2004-05-18 | Optical power calibration fixture |
Country Status (2)
Country | Link |
---|---|
US (1) | US20050259540A1 (zh) |
TW (1) | TWI256632B (zh) |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4692913A (en) * | 1980-11-26 | 1987-09-08 | News Log International, Inc. | Method and apparatus for reading a data record carrier |
US4532619A (en) * | 1982-01-22 | 1985-07-30 | Hitachi, Ltd. | Method and apparatus for reducing semiconductor laser optical noise |
JP2862651B2 (ja) * | 1990-08-31 | 1999-03-03 | 株式会社東芝 | 磁気ディスク装置 |
US7006425B1 (en) * | 1998-11-30 | 2006-02-28 | Kabushiki Kaisha Toshiba | Information recording and/or reproducing method and apparatus for three dimensional optical recording medium |
US6191848B1 (en) * | 1999-04-15 | 2001-02-20 | Kodak Polychrome Graphics Llc | Laser sensor holder |
EP1130585B1 (en) * | 2000-02-28 | 2011-12-21 | FUJIFILM Corporation | Recording medium and information recording and reproducing method using the same |
JP3641199B2 (ja) * | 2000-09-29 | 2005-04-20 | 株式会社東芝 | 三次元光記録媒体用情報記録装置 |
AU2002228872A1 (en) * | 2000-11-09 | 2002-05-21 | Burstein Technologies, Inc. | Disc drive system and methods for use with bio-discs |
AU2002241851A1 (en) * | 2001-01-11 | 2002-07-24 | Burstein Technologies, Inc. | Optical disc analysis system including related methods for biological and medical imaging |
-
2004
- 2004-05-18 TW TW093114002A patent/TWI256632B/zh not_active IP Right Cessation
-
2005
- 2005-05-18 US US11/131,178 patent/US20050259540A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
US20050259540A1 (en) | 2005-11-24 |
TW200539156A (en) | 2005-12-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM4A | Annulment or lapse of patent due to non-payment of fees |