JPS5814236U - optical pickup device - Google Patents
optical pickup deviceInfo
- Publication number
- JPS5814236U JPS5814236U JP10804881U JP10804881U JPS5814236U JP S5814236 U JPS5814236 U JP S5814236U JP 10804881 U JP10804881 U JP 10804881U JP 10804881 U JP10804881 U JP 10804881U JP S5814236 U JPS5814236 U JP S5814236U
- Authority
- JP
- Japan
- Prior art keywords
- beam splitter
- pickup device
- optical pickup
- error signal
- semiconductor laser
- 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.)
- Pending
Links
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図ａ、 ｂは従来技術による光ピツクアップ装置
の構成を示す概略図、第２図は偏光ビームスプリッタと
シリンドリカルレンズを合体した光学部材の構成図、第
３図は本考案による光ピツクアップ装置の一実施例の構
成図、第４図は４分割光センサの構造と検出回路の説明
図である。
１・・・・・・半導体レーザ、２・・・・・・コリメー
タレンズ、３．１０・・・・・・偏光ビームスプリッタ
、４・・・・・・％波長板、５・・・・・・対物レンズ
、６・・・・・・情報記録ディスク、７・・・・・・シ
リンドリカルレンズ、８・・・・・・４分割′光センサ
、９・・・・・・接着剤。Figures 1a and b are schematic diagrams showing the configuration of an optical pickup device according to the prior art, Figure 2 is a configuration diagram of an optical member that combines a polarizing beam splitter and a cylindrical lens, and Figure 3 is a diagram showing the configuration of an optical pickup device according to the present invention. FIG. 4 is a block diagram of one embodiment, and is an explanatory diagram of the structure of a four-split optical sensor and a detection circuit. 1...Semiconductor laser, 2...Collimator lens, 3.10...Polarizing beam splitter, 4...% wavelength plate, 5... -Objective lens, 6...Information recording disk, 7...Cylindrical lens, 8...4-divided optical sensor, 9...Adhesive.
Claims (1)
センサ等より構成され、情報記録ディスクの記録面にレ
ーザビームの焦点を結ばせ、その反射光を検出すること
により、フォーカシングエラー信号、トラッキングエラ
ー信号及び情報検出信号を得る光ピツクアップ装置にお
いて、前記偏光ビームスプリッタとして、前記半導体レ
ーザより入射するレーザビームの光軸に沿って配置した
円筒形偏光ビームスプリッタを用いて構成したことを特
徴とする光ピツクアップ装置。Consisting of an objective lens, a polarizing beam splitter, a semiconductor laser, an optical sensor, etc., it focuses a laser beam on the recording surface of an information recording disk and detects the reflected light to generate a focusing error signal, tracking error signal, and information. An optical pickup device for obtaining a detection signal, characterized in that the polarization beam splitter is a cylindrical polarization beam splitter arranged along the optical axis of a laser beam incident from the semiconductor laser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10804881U JPS5814236U (en) | 1981-07-21 | 1981-07-21 | optical pickup device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10804881U JPS5814236U (en) | 1981-07-21 | 1981-07-21 | optical pickup device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5814236U true JPS5814236U (en) | 1983-01-28 |
Family
ID=29902470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10804881U Pending JPS5814236U (en) | 1981-07-21 | 1981-07-21 | optical pickup device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5814236U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59150889U (en) * | 1983-03-30 | 1984-10-09 | 株式会社ニチベイ | BLIND |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53142203A (en) * | 1977-05-18 | 1978-12-11 | Pioneer Electronic Corp | Focus servoodevice for optical information reader |
| JPS566038B2 (en) * | 1973-02-20 | 1981-02-09 |
-
1981
- 1981-07-21 JP JP10804881U patent/JPS5814236U/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS566038B2 (en) * | 1973-02-20 | 1981-02-09 | ||
| JPS53142203A (en) * | 1977-05-18 | 1978-12-11 | Pioneer Electronic Corp | Focus servoodevice for optical information reader |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59150889U (en) * | 1983-03-30 | 1984-10-09 | 株式会社ニチベイ | BLIND |
| JPH0217120Y2 (en) * | 1983-03-30 | 1990-05-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5814236U (en) | optical pickup device | |
| JPH0728085B2 (en) | Semiconductor laser device | |
| JPH056741B2 (en) | ||
| JPH0433551Y2 (en) | ||
| JPS61243964A (en) | Semiconductor laser device | |
| JP2580987B2 (en) | Optical writing and reading device | |
| JP2857245B2 (en) | Optical pickup device | |
| JPS5814234U (en) | Optical pickup device | |
| JPH0296619U (en) | ||
| JPS58193334U (en) | light pick up | |
| JPS6089620U (en) | Photodetector for information detection | |
| JPS582733U (en) | optical information reader | |
| JPS5817630U (en) | Optical pickup device | |
| JPS58127431U (en) | Information recording and reproducing device | |
| JPS5887145U (en) | Track tracking control signal detection circuit for information reproducing device | |
| JPS59157223U (en) | Optical pickup device | |
| JPS5849330U (en) | Focus control signal detection circuit for information reproducing device | |
| JPS5999222U (en) | optical pickup device | |
| JPS60135818U (en) | Focus error detection device | |
| JPS603923U (en) | Beam spot detection device | |
| JPS59173131U (en) | Optical pickup optical system | |
| JPS59153625U (en) | Optical head for optical disk | |
| JPS6020025U (en) | Optical disk signal detection splitter | |
| JPS60146920U (en) | Optical information reproducing device | |
| JPS60180325U (en) | Focus error signal detection device |