JPH0210402B2 - - Google Patents
Info
- Publication number
- JPH0210402B2 JPH0210402B2 JP1430383A JP1430383A JPH0210402B2 JP H0210402 B2 JPH0210402 B2 JP H0210402B2 JP 1430383 A JP1430383 A JP 1430383A JP 1430383 A JP1430383 A JP 1430383A JP H0210402 B2 JPH0210402 B2 JP H0210402B2
- Authority
- JP
- Japan
- Prior art keywords
- lens
- group
- focal length
- disk
- aberration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000003287 optical effect Effects 0.000 claims description 8
- 230000005499 meniscus Effects 0.000 claims description 4
- 230000004075 alteration Effects 0.000 description 25
- 206010010071 Coma Diseases 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 239000006059 cover glass Substances 0.000 description 3
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/24—Optical objectives specially designed for the purposes specified below for reproducing or copying at short object distances
-
- 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
- G11B7/1372—Lenses
- G11B7/1374—Objective lenses
-
- 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
- G11B7/1392—Means for controlling the beam wavefront, e.g. for correction of aberration
- G11B7/13922—Means for controlling the beam wavefront, e.g. for correction of aberration passive
-
- 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
- G11B7/1372—Lenses
- G11B2007/13727—Compound lenses, i.e. two or more lenses co-operating to perform a function, e.g. compound objective lens including a solid immersion lens, positive and negative lenses either bonded together or with adjustable spacing
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Lenses (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1430383A JPS59140414A (ja) | 1983-01-31 | 1983-01-31 | 光デイスク用対物レンズ |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1430383A JPS59140414A (ja) | 1983-01-31 | 1983-01-31 | 光デイスク用対物レンズ |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59140414A JPS59140414A (ja) | 1984-08-11 |
| JPH0210402B2 true JPH0210402B2 (ru) | 1990-03-08 |
Family
ID=11857327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1430383A Granted JPS59140414A (ja) | 1983-01-31 | 1983-01-31 | 光デイスク用対物レンズ |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59140414A (ru) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07119889B2 (ja) * | 1985-09-20 | 1995-12-20 | コニカ株式会社 | 光情報記録媒体の記録・再生光学系用集光光学系 |
| JPH01262445A (ja) * | 1988-04-13 | 1989-10-19 | Toshiba Corp | 表面検査装置 |
| JP3932578B2 (ja) * | 1996-10-24 | 2007-06-20 | ソニー株式会社 | 対物レンズ及び光学ピックアップ装置 |
| JP4506081B2 (ja) * | 2003-02-06 | 2010-07-21 | コニカミノルタホールディングス株式会社 | 光ピックアップ装置 |
-
1983
- 1983-01-31 JP JP1430383A patent/JPS59140414A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59140414A (ja) | 1984-08-11 |
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