JPS61140434U - - Google Patents
Info
- Publication number
- JPS61140434U JPS61140434U JP2235785U JP2235785U JPS61140434U JP S61140434 U JPS61140434 U JP S61140434U JP 2235785 U JP2235785 U JP 2235785U JP 2235785 U JP2235785 U JP 2235785U JP S61140434 U JPS61140434 U JP S61140434U
- Authority
- JP
- Japan
- Prior art keywords
- optical head
- track
- light spot
- disk
- acousto
- 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 3
- 238000010586 diagram Methods 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 1
Landscapes
- Optical Recording Or Reproduction (AREA)
Description
第１図は本考案の一実施例の構成図、第２図は
フオトダイオード上の光スポツトの形状説明図、
第３図は従来の光学ヘツドの構成図である。
１……半導体レーザ、２……ハーフプリズム、
３……コリメータレンズ、４……対物レンズ、５
……デイスク、６……シリンドリカルレンズ、７
……フオトダイオード、ＳＰ……受光レンズ、９
……音響光学偏向器。
Fig. 1 is a configuration diagram of an embodiment of the present invention, Fig. 2 is an explanatory diagram of the shape of a light spot on a photodiode,
FIG. 3 is a block diagram of a conventional optical head. 1... Semiconductor laser, 2... Half prism,
3... Collimator lens, 4... Objective lens, 5
...Disc, 6...Cylindrical lens, 7
... Photodiode, SP ... Light receiving lens, 9
...Acousto-optic deflector.
Claims (1)
ながら記録情報を読み取つたり逆にデイスクに情
報を記録する光学ヘツドにおいて、前記光スポツ
トのトラツクへの追従を音響光学偏向器を用いて
行うことを特徴とする光学ヘツド。 An optical head that reads recorded information while making a light spot on a disk follow a track, or conversely records information on a disk, is characterized in that the light spot follows a track using an acousto-optic deflector. optical head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2235785U JPS61140434U (en) | 1985-02-18 | 1985-02-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2235785U JPS61140434U (en) | 1985-02-18 | 1985-02-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61140434U true JPS61140434U (en) | 1986-08-30 |
Family
ID=30514578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2235785U Pending JPS61140434U (en) | 1985-02-18 | 1985-02-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61140434U (en) |
-
1985
- 1985-02-18 JP JP2235785U patent/JPS61140434U/ja active Pending