JPS6211230U - - Google Patents
Info
- Publication number
- JPS6211230U JPS6211230U JP10251785U JP10251785U JPS6211230U JP S6211230 U JPS6211230 U JP S6211230U JP 10251785 U JP10251785 U JP 10251785U JP 10251785 U JP10251785 U JP 10251785U JP S6211230 U JPS6211230 U JP S6211230U
- Authority
- JP
- Japan
- Prior art keywords
- reflectance
- position detection
- optical pickup
- photodetectors
- detection device
- 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.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims description 7
- 230000003287 optical effect Effects 0.000 claims description 4
- 239000000284 extract Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Description
第１図は本考案による光学ピツクアツプの位置
検出装置の一実施例の構成を示す斜視図、第２図
は第１図の実施例の動作説明のための略線断面図
、第３図は第１図の実施例の位置検出特性を示す
図、第４図は本考案の他の実施例の構成を示す斜
視図、第５図は第４図の実施例の動作説明のため
の略線断面図、第６図は第４図の実施例の位置検
出特性を示す図、第７図は本考案の更に他の実施
例の構成を示す斜視図、第８図は第７図の実施例
の動作説明のための略線断面図、第９図は従来の
光学ピツクアツプの位置検出装置の構成例を示す
斜視図、第１０図は従来装置の動作説明のための
略線断面図である。
２，１０はレンズ駆動部、７は光源、１２，２
２，３２は無反射部、１３，１４，２３，２４，
３３，３４は反射部、１５，１６，２５，２６，
３５，３６，３７，３８は光検出器である。
FIG. 1 is a perspective view showing the configuration of an embodiment of the position detection device for an optical pickup according to the present invention, FIG. 2 is a schematic sectional view for explaining the operation of the embodiment of FIG. 1, and FIG. 1 is a diagram showing the position detection characteristics of the embodiment of the present invention, FIG. 4 is a perspective view showing the configuration of another embodiment of the present invention, and FIG. 5 is a schematic cross-section for explaining the operation of the embodiment of FIG. 4. 6 is a diagram showing the position detection characteristics of the embodiment shown in FIG. 4, FIG. 7 is a perspective view showing the configuration of still another embodiment of the present invention, and FIG. 8 is a diagram showing the configuration of the embodiment shown in FIG. 7. FIG. 9 is a perspective view showing an example of the configuration of a conventional optical pickup position detection device, and FIG. 10 is a schematic cross-sectional view for explaining the operation of the conventional device. 2 and 10 are lens drive units, 7 is a light source, 12 and 2
2, 32 are non-reflective parts, 13, 14, 23, 24,
33, 34 are reflective parts, 15, 16, 25, 26,
35, 36, 37, and 38 are photodetectors.
Claims (1)
複数の光検出器を有する光学ピツクアツプの位置
検出装置において、 上記レンズ駆動部に第１の反射率を有する第１
の領域と、該第１の領域に連接し、上記第１の反
射率と異なる第２の反射率を有する第２及び第３
の領域とを設け、 上記光源を上記第１の領域に対向させて配設す
ると共に、上記複数の光検出器を上記第２及び第
３の領域にそれぞれ対向させて配設し、 上記複数の光検出器の各検出出力を差動的に取
出すようにして成る光学ピツクアツプの位置検出
装置。[Claims for Utility Model Registration] In a position detection device for an optical pickup having a light source and a plurality of photodetectors for detecting the position of a lens drive section, the lens drive section includes a first reflectance having a first reflectance.
and second and third regions connected to the first region and having a second reflectance different from the first reflectance.
the light source is arranged to face the first region, and the plurality of photodetectors are arranged to face the second and third regions, respectively; An optical pickup position detection device that differentially extracts each detection output of a photodetector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985102517U JP2524773Y2 (en) | 1985-07-05 | 1985-07-05 | Optical pickup position detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985102517U JP2524773Y2 (en) | 1985-07-05 | 1985-07-05 | Optical pickup position detecting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6211230U true JPS6211230U (en) | 1987-01-23 |
| JP2524773Y2 JP2524773Y2 (en) | 1997-02-05 |
Family
ID=30974235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985102517U Expired - Lifetime JP2524773Y2 (en) | 1985-07-05 | 1985-07-05 | Optical pickup position detecting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2524773Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55153138A (en) * | 1979-05-14 | 1980-11-28 | Mitsubishi Electric Corp | Optical pickup unit |
-
1985
- 1985-07-05 JP JP1985102517U patent/JP2524773Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55153138A (en) * | 1979-05-14 | 1980-11-28 | Mitsubishi Electric Corp | Optical pickup unit |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2524773Y2 (en) | 1997-02-05 |
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