JPS632220U - - Google Patents
Info
- Publication number
- JPS632220U JPS632220U JP9370286U JP9370286U JPS632220U JP S632220 U JPS632220 U JP S632220U JP 9370286 U JP9370286 U JP 9370286U JP 9370286 U JP9370286 U JP 9370286U JP S632220 U JPS632220 U JP S632220U
- Authority
- JP
- Japan
- Prior art keywords
- objective lens
- optical pickup
- aperture
- laser beam
- tracking direction
- 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 description 4
- 230000001678 irradiating effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
Landscapes
- Optical Recording Or Reproduction (AREA)
Description
第１図は本考案に係る光ピツクアツプの実施例
を示す光学配置図、第２図は同上実施例中のレン
ズホルダの部分を示す斜視図、第３図は本考案に
使用可能な位置検出素子の一例を原理的に示す説
明図、第４図は同上位置検出素子の動作を示す線
図、第５図は本考案に使用可能な位置検出素子の
別の例を模型的に示す説明図、第６図は同上位置
検出素子の動作を示す線図、第７図は従来の光ピ
ツクアツプの例を示す光学配置図である。
１７……対物レンズ、１８……情報記録媒体、
２０……アパーチユア、２１……位置検出素子。
Fig. 1 is an optical layout diagram showing an embodiment of the optical pickup according to the present invention, Fig. 2 is a perspective view showing the lens holder part in the same embodiment, and Fig. 3 is a position detection element that can be used in the present invention. An explanatory diagram showing the principle of an example; FIG. 4 is a diagram showing the operation of the position detecting element; FIG. 5 is an explanatory diagram schematically showing another example of the position detecting element that can be used in the present invention; FIG. 6 is a diagram showing the operation of the above position detection element, and FIG. 7 is an optical layout diagram showing an example of a conventional optical pickup. 17... Objective lens, 18... Information recording medium,
20...Aperture, 21...Position detection element.
Claims (1)
録媒体に照射して情報の記録再生を行うようにし
た光ピツクアツプにおいて、上記対物レンズと一
体的にトラツキング方向に移動可能に設けられた
アパーチユアと、このアパーチユアを介して導か
れる上記レーザ光束を受光して対物レンズのトラ
ツキング方向の位置を検出する位置検出素子とを
有してなる光ピツクアツプ。 In an optical pickup that records and reproduces information by condensing a laser beam using an objective lens and irradiating it onto an information recording medium, an aperture that is provided so as to be movable in a tracking direction integrally with the objective lens; An optical pickup comprising a position detection element that receives the laser beam guided through the aperture and detects the position of the objective lens in the tracking direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9370286U JPS632220U (en) | 1986-06-19 | 1986-06-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9370286U JPS632220U (en) | 1986-06-19 | 1986-06-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS632220U true JPS632220U (en) | 1988-01-08 |
Family
ID=30956500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9370286U Pending JPS632220U (en) | 1986-06-19 | 1986-06-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS632220U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55153138A (en) * | 1979-05-14 | 1980-11-28 | Mitsubishi Electric Corp | Optical pickup unit |
| JPS59152530A (en) * | 1983-02-21 | 1984-08-31 | Sony Corp | Pickup device of optical disk |
-
1986
- 1986-06-19 JP JP9370286U patent/JPS632220U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55153138A (en) * | 1979-05-14 | 1980-11-28 | Mitsubishi Electric Corp | Optical pickup unit |
| JPS59152530A (en) * | 1983-02-21 | 1984-08-31 | Sony Corp | Pickup device of optical disk |
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