JPH1131332A5 - - Google Patents
Info
- Publication number
- JPH1131332A5 JPH1131332A5 JP1997184092A JP18409297A JPH1131332A5 JP H1131332 A5 JPH1131332 A5 JP H1131332A5 JP 1997184092 A JP1997184092 A JP 1997184092A JP 18409297 A JP18409297 A JP 18409297A JP H1131332 A5 JPH1131332 A5 JP H1131332A5
- Authority
- JP
- Japan
- Prior art keywords
- wavelength
- light
- hologram
- optical
- volume hologram
- 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.)
- Granted
Links
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18409297A JP3658928B2 (ja) | 1997-07-09 | 1997-07-09 | 光ヘッド装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18409297A JP3658928B2 (ja) | 1997-07-09 | 1997-07-09 | 光ヘッド装置 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JPH1131332A JPH1131332A (ja) | 1999-02-02 |
| JPH1131332A5 true JPH1131332A5 (enExample) | 2004-07-22 |
| JP3658928B2 JP3658928B2 (ja) | 2005-06-15 |
Family
ID=16147265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18409297A Expired - Fee Related JP3658928B2 (ja) | 1997-07-09 | 1997-07-09 | 光ヘッド装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3658928B2 (enExample) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2161735A3 (en) | 1999-03-05 | 2010-12-08 | Canon Kabushiki Kaisha | Image formation apparatus |
| JP2001014717A (ja) | 1999-04-28 | 2001-01-19 | Matsushita Electronics Industry Corp | 光学装置 |
| ATE280960T1 (de) | 1999-08-26 | 2004-11-15 | Asahi Glass Co Ltd | Phasenverschieber und dmit ausgestatter optik- kopf |
| JP5027002B2 (ja) * | 2008-02-19 | 2012-09-19 | 株式会社リコー | 光情報再生装置および方法 |
-
1997
- 1997-07-09 JP JP18409297A patent/JP3658928B2/ja not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0747893B1 (en) | Optical head apparatus for different types of disks | |
| CN1252702C (zh) | 用于光学拾取头装置的物镜 | |
| KR100514323B1 (ko) | 복수의광디스크를호환하는대물렌즈를구비한광픽업 | |
| JP4192373B2 (ja) | 光ディスク | |
| KR19980087503A (ko) | 광 헤드 장치 | |
| JPH07182687A (ja) | 光ピックアップ | |
| US7046611B2 (en) | Optical pickup compatible with a digital versatile disk and a recordable compact disk using a holographic ring lens | |
| WO2000055849A1 (en) | Convergent device, optical head, optical information recording/reproducing and optical information recording/reproducing method | |
| US7239596B2 (en) | Optical pickup device and optical recording medium driving apparatus | |
| JP2725653B2 (ja) | 光ヘッド装置 | |
| JP2003294926A (ja) | 波長結合素子及びそれを備えた光ピックアップ装置 | |
| KR19980017956A (ko) | 광학적 위상판을 사용한 광픽업 | |
| JP2000221388A (ja) | 光束径可変型対物レンズおよびこれを用いた光学装置 | |
| KR100200848B1 (ko) | 2중 초점 형성방법 및 이를 이용한 광픽업 | |
| EP1742100A1 (en) | Multifocal lens and method for manufacturing the same | |
| JP3658928B2 (ja) | 光ヘッド装置 | |
| JPH1131332A5 (enExample) | ||
| JP2002184028A (ja) | ホログラム形可変絞りを使用するcd−r/dvd用光記録/ピックアップヘッド | |
| JP4416917B2 (ja) | 光学素子およびそれを用いた光学装置 | |
| JP4231126B2 (ja) | 光学ヘッド | |
| JP4281187B2 (ja) | 光ヘッド装置 | |
| KR100238069B1 (ko) | 홀로그램을 사용한 cd-r 및 dvd 호환 광픽업 | |
| JPH11120598A (ja) | 光ヘッド装置 | |
| JP3750356B2 (ja) | 開口制御素子およびこれを用いた光ヘッド装置 | |
| JPH0950648A (ja) | 光ヘッド装置 |