JPH032425U - - Google Patents
Info
- Publication number
- JPH032425U JPH032425U JP6200089U JP6200089U JPH032425U JP H032425 U JPH032425 U JP H032425U JP 6200089 U JP6200089 U JP 6200089U JP 6200089 U JP6200089 U JP 6200089U JP H032425 U JPH032425 U JP H032425U
- Authority
- JP
- Japan
- Prior art keywords
- optical pickup
- focus error
- error signal
- detection circuit
- signal detection
- 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 6
- 238000001514 detection method Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Optical Recording Or Reproduction (AREA)
Description
第１図は本考案の光学ピツクアツプの一実施例
を示す回路構成図、第２図は第１図例の外観の一
例を示す斜視図、第３図は従来の光学ピツクアツ
プの一例を示す回路構成図、第４図はフオトデイ
テクタの配置例を示す平面図である。
２ａ，２ｂ，２ｃ及び２ｄ……フオトデイテク
タ、２０……光学ピツクアツプ、２３……第１の
基準電源、３０……第２の基準電源、３６……フ
オーカスエラー信号出力端子、３７……バイアス
調整用の可変抵抗器である。
FIG. 1 is a circuit configuration diagram showing an embodiment of the optical pickup of the present invention, FIG. 2 is a perspective view showing an example of the external appearance of the example in FIG. 1, and FIG. 3 is a circuit configuration diagram showing an example of a conventional optical pickup. 4 are plan views showing examples of the arrangement of photodetectors. 2a, 2b, 2c and 2d...Photodetector, 20...Optical pickup, 23...First reference power supply, 30...Second reference power supply, 36...Focus error signal output terminal, 37...Bias adjustment This is a variable resistor for use.
Claims (1)
学ピツクアツプにおいて、 上記光学ピツクアツプ内の電源回路より上記フ
オーカスエラー信号検出回路の調整用バイアス信
号を得るようにしたことを特徴とする光学ピツク
アツプ。[Claims for Utility Model Registration] An optical pickup equipped with a focus error signal detection circuit, characterized in that a bias signal for adjusting the focus error signal detection circuit is obtained from a power supply circuit in the optical pickup. Optical pick-up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6200089U JPH032425U (en) | 1989-05-29 | 1989-05-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6200089U JPH032425U (en) | 1989-05-29 | 1989-05-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH032425U true JPH032425U (en) | 1991-01-11 |
Family
ID=31590753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6200089U Pending JPH032425U (en) | 1989-05-29 | 1989-05-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH032425U (en) |
-
1989
- 1989-05-29 JP JP6200089U patent/JPH032425U/ja active Pending