NL1016064A1 - Optical beam splitter for the polarization separation of monochromatic light. - Google Patents
Optical beam splitter for the polarization separation of monochromatic light.Info
- Publication number
- NL1016064A1 NL1016064A1 NL1016064A NL1016064A NL1016064A1 NL 1016064 A1 NL1016064 A1 NL 1016064A1 NL 1016064 A NL1016064 A NL 1016064A NL 1016064 A NL1016064 A NL 1016064A NL 1016064 A1 NL1016064 A1 NL 1016064A1
- Authority
- NL
- Netherlands
- Prior art keywords
- beam splitter
- optical beam
- monochromatic light
- polarization separation
- polarization
- 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
- G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
- G11B7/1353—Diffractive elements, e.g. holograms or gratings
-
- 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
- G11B7/123—Integrated head arrangements, e.g. with source and detectors mounted on the same substrate
- G11B7/124—Integrated head arrangements, e.g. with source and detectors mounted on the same substrate the integrated head arrangements including waveguides
-
- 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
- G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
- G11B7/1395—Beam splitters or combiners
-
- 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
- G11B7/14—Heads, e.g. forming of the optical beam spot or modulation of the optical beam specially adapted to record on, or to reproduce from, more than one track simultaneously
-
- 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
- G11B2007/0003—Recording, reproducing or erasing systems characterised by the structure or type of the carrier
- G11B2007/0006—Recording, reproducing or erasing systems characterised by the structure or type of the carrier adapted for scanning different types of carrier, e.g. CD & DVD
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Head (AREA)
- Polarising Elements (AREA)
- Diffracting Gratings Or Hologram Optical Elements (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19942420A DE19942420A1 (en) | 1999-09-06 | 1999-09-06 | Optical beam divider for polarization separation of monochromatic light is for use in CD or DVD optical pick up device and can be produced more economically than existing devices |
| DE19942420 | 1999-09-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| NL1016064A1 true NL1016064A1 (en) | 2001-03-08 |
| NL1016064C2 NL1016064C2 (en) | 2005-04-20 |
Family
ID=7920934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL1016064A NL1016064C2 (en) | 1999-09-06 | 2000-08-31 | Optical beam splitter for the polarization separation of monochromatic light. |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2001116915A (en) |
| DE (1) | DE19942420A1 (en) |
| FR (1) | FR2798200B1 (en) |
| NL (1) | NL1016064C2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115629485B (en) * | 2022-12-07 | 2023-05-12 | 合肥的卢深视科技有限公司 | Speckle projector and structured light camera |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2644829B2 (en) * | 1988-06-24 | 1997-08-25 | 株式会社リコー | Optical information recording / reproducing device |
| JP2749107B2 (en) * | 1989-03-20 | 1998-05-13 | 株式会社日立製作所 | Light head |
| JP3131994B2 (en) * | 1990-11-07 | 2001-02-05 | パイオニア株式会社 | Recorded information reading device |
-
1999
- 1999-09-06 DE DE19942420A patent/DE19942420A1/en not_active Withdrawn
-
2000
- 2000-08-28 JP JP2000256761A patent/JP2001116915A/en not_active Withdrawn
- 2000-08-31 NL NL1016064A patent/NL1016064C2/en not_active IP Right Cessation
- 2000-09-05 FR FR0011295A patent/FR2798200B1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE19942420A1 (en) | 2001-03-08 |
| FR2798200A1 (en) | 2001-03-09 |
| FR2798200B1 (en) | 2005-11-18 |
| JP2001116915A (en) | 2001-04-27 |
| NL1016064C2 (en) | 2005-04-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AD1A | A request for search or an international type search has been filed | ||
| RD2N | Patents in respect of which a decision has been taken or a report has been made (novelty report) |
Effective date: 20041215 |
|
| PD2B | A search report has been drawn up | ||
| V1 | Lapsed because of non-payment of the annual fee |
Effective date: 20100301 |