JPH0429048B2 - - Google Patents
Info
- Publication number
- JPH0429048B2 JPH0429048B2 JP1112514A JP11251489A JPH0429048B2 JP H0429048 B2 JPH0429048 B2 JP H0429048B2 JP 1112514 A JP1112514 A JP 1112514A JP 11251489 A JP11251489 A JP 11251489A JP H0429048 B2 JPH0429048 B2 JP H0429048B2
- Authority
- JP
- Japan
- Prior art keywords
- semiconductor laser
- disk
- lens
- aspherical
- height
- 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 - Lifetime
Links
- 239000004065 semiconductor Substances 0.000 claims description 26
- 230000003287 optical effect Effects 0.000 claims description 20
- 230000010355 oscillation Effects 0.000 claims description 2
- 230000004075 alteration Effects 0.000 description 12
- 230000005855 radiation Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 239000006059 cover glass Substances 0.000 description 2
- 206010010071 Coma Diseases 0.000 description 1
- 201000009310 astigmatism Diseases 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 230000005469 synchrotron radiation Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Head (AREA)
- Lenses (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1112514A JPH02118508A (ja) | 1989-05-01 | 1989-05-01 | 光ディスク用レンズ |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1112514A JPH02118508A (ja) | 1989-05-01 | 1989-05-01 | 光ディスク用レンズ |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP24028084A Division JPS61118708A (ja) | 1984-11-14 | 1984-11-14 | 光デイスク用レンズ |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH02118508A JPH02118508A (ja) | 1990-05-02 |
JPH0429048B2 true JPH0429048B2 (de) | 1992-05-15 |
Family
ID=14588556
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1112514A Granted JPH02118508A (ja) | 1989-05-01 | 1989-05-01 | 光ディスク用レンズ |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH02118508A (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6259668B1 (en) | 1996-02-14 | 2001-07-10 | Samsung Electronics Co., Ltd. | Recording/reproducing apparatus having an optical pickup device to read from and record information to disks of different thicknesses |
US6222812B1 (en) | 1996-08-29 | 2001-04-24 | Samsung Electronics Co., Ltd. | Optical pickup using an optical phase plate |
US6639889B1 (en) | 1997-02-13 | 2003-10-28 | Samsung Electronics Co., Ltd. | Recording/reproducing apparatus including an optical pickup having an objective lens compatible with a plurality of optical disk formats |
US6304540B1 (en) | 1998-03-30 | 2001-10-16 | Samsung Electronics Co., Ltd. | Optical pickup compatible with a digital versatile disk and a recordable compact disk using a holographic ring lens |
KR20030093683A (ko) | 2002-06-05 | 2003-12-11 | 삼성전자주식회사 | 호환형 광픽업 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55130527A (en) * | 1979-03-30 | 1980-10-09 | Minolta Camera Co Ltd | Real image system finder optical system |
JPS5776512A (en) * | 1980-10-31 | 1982-05-13 | Konishiroku Photo Ind Co Ltd | Large-aperture aspheric single lens |
JPS57201210A (en) * | 1981-06-04 | 1982-12-09 | Sony Corp | Condenser lens |
JPS5923313A (ja) * | 1982-07-29 | 1984-02-06 | Minolta Camera Co Ltd | 大口径集光レンズ |
JPS5926714A (ja) * | 1982-08-05 | 1984-02-13 | Olympus Optical Co Ltd | 光デイスク用レンズ |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61190054U (de) * | 1985-05-20 | 1986-11-27 |
-
1989
- 1989-05-01 JP JP1112514A patent/JPH02118508A/ja active Granted
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55130527A (en) * | 1979-03-30 | 1980-10-09 | Minolta Camera Co Ltd | Real image system finder optical system |
JPS5776512A (en) * | 1980-10-31 | 1982-05-13 | Konishiroku Photo Ind Co Ltd | Large-aperture aspheric single lens |
JPS57201210A (en) * | 1981-06-04 | 1982-12-09 | Sony Corp | Condenser lens |
JPS5923313A (ja) * | 1982-07-29 | 1984-02-06 | Minolta Camera Co Ltd | 大口径集光レンズ |
JPS5926714A (ja) * | 1982-08-05 | 1984-02-13 | Olympus Optical Co Ltd | 光デイスク用レンズ |
Also Published As
Publication number | Publication date |
---|---|
JPH02118508A (ja) | 1990-05-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |