JPH01154516U - - Google Patents
Info
- Publication number
- JPH01154516U JPH01154516U JP5069788U JP5069788U JPH01154516U JP H01154516 U JPH01154516 U JP H01154516U JP 5069788 U JP5069788 U JP 5069788U JP 5069788 U JP5069788 U JP 5069788U JP H01154516 U JPH01154516 U JP H01154516U
- Authority
- JP
- Japan
- Prior art keywords
- optical
- parallel light
- beam splitter
- carriage
- light beam
- 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
- 230000003287 optical effect Effects 0.000 claims description 16
- 238000010586 diagram Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
Landscapes
- Optical Head (AREA)
- Optical Recording Or Reproduction (AREA)
Description
第１図は本考案の第一の実施例を示す斜視図、
第２図は要部の縦断正面図、第３図は第二の実施
例を示す要部の縦断正面図、第４図は第三の実施
例を示す要部の縦断正面図、第５図は先行技術の
斜視図、第６図は要部の斜視図、第７図は要部の
縦断側面図、第８図はフオーカシング信号の検出
原理を示す説明図、第９図はトラツキング信号の
検出原理を示す説明図、第１０図はフレアの発生
状態を示す説明図である。
２……光源部、５……光、１４……光デイスク
、１５……対物レンズ、１６……ビームスプリツ
タ、１７……トラツキング検出器、２１……光ピ
ツクアツプ装置、２２……キヤリツジ、２３……
光偏向器、２４……光偏向器、２５……光ピツク
アツプ装置、２６……キヤリツジ、２７……光偏
向器、２８……光偏向器、２９……光ピツクアツ
プ装置、３０……キヤリツジ、３１……光偏向器
。
FIG. 1 is a perspective view showing a first embodiment of the present invention;
Fig. 2 is a longitudinal sectional front view of the main part, Fig. 3 is a longitudinal sectional front view of the main part showing the second embodiment, Fig. 4 is a longitudinal sectional front view of the main part showing the third embodiment, and Fig. 5 is a perspective view of the prior art, FIG. 6 is a perspective view of the main part, FIG. 7 is a longitudinal cross-sectional side view of the main part, FIG. 8 is an explanatory diagram showing the principle of detection of focusing signals, and FIG. 9 is detection of tracking signals. FIG. 10 is an explanatory diagram showing the principle, and FIG. 10 is an explanatory diagram showing the state in which flare occurs. 2... Light source unit, 5... Light, 14... Optical disk, 15... Objective lens, 16... Beam splitter, 17... Tracking detector, 21... Optical pickup device, 22... Carriage, 23 ……
Optical deflector, 24... Optical deflector, 25... Optical pickup device, 26... Carriage, 27... Optical deflector, 28... Optical deflector, 29... Optical pickup device, 30... Carriage, 31 ...Light deflector.
Claims (1)
部を固定的に設け、前記半径方向に移動自在なキ
ヤリツジを前記平行光束の光路に沿わせて設け、
前記平行光束を略直角に曲折するビームスプリツ
タとこの曲折された平行光束を前記光デイスクの
記録面に収束する対物レンズと前記記録面から反
射されて前記ビームスプリツタを透過した光を受
光するトラツキング検出器とを前記キヤリツジに
取付け、前記キヤリツジを移動する移動手段を設
けた光ピツクアツプ装置において、前記ビームス
プリツタから前記トラツキング検出器に至る光路
途中に少なくとも一つの光偏向器を設け、前記ト
ラツキング検出器と前記ビームスプリツタとを光
路方向に離反させて配設したことを特徴とする光
ピツクアツプ装置。 A light source unit that emits a parallel light beam in the radial direction of the optical disk is fixedly provided, and a carriage that is movable in the radial direction is provided along the optical path of the parallel light beam,
A beam splitter that bends the parallel light beam at a substantially right angle, an objective lens that converges the bent parallel light beam onto a recording surface of the optical disk, and a light that is reflected from the recording surface and transmitted through the beam splitter. A tracking detector is attached to the carriage, and an optical pickup device is provided with a moving means for moving the carriage, wherein at least one optical deflector is provided in the middle of an optical path from the beam splitter to the tracking detector, An optical pickup device characterized in that a detector and the beam splitter are arranged to be separated from each other in the direction of the optical path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5069788U JPH01154516U (en) | 1988-04-15 | 1988-04-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5069788U JPH01154516U (en) | 1988-04-15 | 1988-04-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01154516U true JPH01154516U (en) | 1989-10-24 |
Family
ID=31276734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5069788U Pending JPH01154516U (en) | 1988-04-15 | 1988-04-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01154516U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06349094A (en) * | 1993-06-07 | 1994-12-22 | Nec Corp | Inner/outer periphery accessing optical head |
-
1988
- 1988-04-15 JP JP5069788U patent/JPH01154516U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06349094A (en) * | 1993-06-07 | 1994-12-22 | Nec Corp | Inner/outer periphery accessing optical head |
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