JPS6168322U - - Google Patents
Info
- Publication number
- JPS6168322U JPS6168322U JP15250784U JP15250784U JPS6168322U JP S6168322 U JPS6168322 U JP S6168322U JP 15250784 U JP15250784 U JP 15250784U JP 15250784 U JP15250784 U JP 15250784U JP S6168322 U JPS6168322 U JP S6168322U
- Authority
- JP
- Japan
- Prior art keywords
- photo sensor
- lens
- objective lens
- optical pick
- tracking control
- 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 4
- 238000006073 displacement reaction Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Optical Recording Or Reproduction (AREA)
Description
第１図は本考案に係る光学式ピツクアツプ装置
を示す図、第２図はトロイダルレンズを示す図、
第３図は従来のピツクアツプ装置を示す図、第４
図は直流オフセツトが生じる状態を示す図である
。
１，２は二分割フオトセンサ、４は対物レンズ
、６はトロイダルレンズ。
FIG. 1 is a diagram showing an optical pickup device according to the present invention, FIG. 2 is a diagram showing a toroidal lens,
Figure 3 is a diagram showing a conventional pickup device, Figure 4
The figure shows a state in which a DC offset occurs. 1 and 2 are two-split photo sensors, 4 is an objective lens, and 6 is a toroidal lens.
Claims (1)
れたトラツキングエラー信号に基いて対物レンズ
を駆動することによりトラツキング制御を行う構
成とした光学式ピツクアツプ装置であつて、前記
フオトセンサーの前方にトラツキング方向にレン
ズ効果を有するトロイダルレンズを配置し、以つ
て対物レンズの変位に伴うフオトセンサー上に於
ける光軸のづれを補償することを特徴とする光学
式ピツクアツプ装置。 An optical pick-up device configured to perform tracking control by driving an objective lens based on a tracking error signal created by the output difference of two divided photo sensors, the device being configured to perform tracking control in front of the photo sensor in a tracking direction. 1. An optical pick-up device comprising: a toroidal lens having a lens effect disposed on the surface of the photo sensor to compensate for deviation of the optical axis on a photo sensor due to displacement of an objective lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15250784U JPS6168322U (en) | 1984-10-09 | 1984-10-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15250784U JPS6168322U (en) | 1984-10-09 | 1984-10-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6168322U true JPS6168322U (en) | 1986-05-10 |
Family
ID=30710566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15250784U Pending JPS6168322U (en) | 1984-10-09 | 1984-10-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6168322U (en) |
-
1984
- 1984-10-09 JP JP15250784U patent/JPS6168322U/ja active Pending
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