JPH01146364U - - Google Patents
Info
- Publication number
- JPH01146364U JPH01146364U JP3919188U JP3919188U JPH01146364U JP H01146364 U JPH01146364 U JP H01146364U JP 3919188 U JP3919188 U JP 3919188U JP 3919188 U JP3919188 U JP 3919188U JP H01146364 U JPH01146364 U JP H01146364U
- Authority
- JP
- Japan
- Prior art keywords
- light
- position detection
- optical pickup
- receiving element
- detection section
- 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
- 238000001514 detection method Methods 0.000 claims description 13
- 230000003287 optical effect Effects 0.000 claims description 10
Landscapes
- Moving Of Head For Track Selection And Changing (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Description
第１図は本考案に係る光学式ピツクアツプの位
置検出片の位置決め固定構造を示す斜視図、第２
図はホトインタラプタの断面図、第３Ａ図、第３
Ｂ図は検出部によつてホトインタラプタの受光素
子への光が遮断されている状態を示す斜視図、第
４図は光学式ピツクアツプの位置検出片の位置決
め固定構造の従来例の斜視図である。
１０……光学式ピツクアツプ、１１……対物レ
ンズ、１２……コイル、１３……マグネツト、１
５……位置検出片、１５ａ，１５ｂ……検出部、
１６ａ，１６ｂ……ホトインタラプタ。
Fig. 1 is a perspective view showing the positioning and fixing structure of the position detection piece of the optical pickup according to the present invention;
The figure is a cross-sectional view of the photointerrupter, Figure 3A, Figure 3.
Figure B is a perspective view showing a state in which light to the light receiving element of the photointerrupter is blocked by the detection section, and Figure 4 is a perspective view of a conventional example of the positioning and fixing structure of the position detection piece of the optical pickup. . 10...Optical pickup, 11...Objective lens, 12...Coil, 13...Magnet, 1
5...position detection piece, 15a, 15b...detection section,
16a, 16b... photo interrupter.
Claims (1)
ツクアツプが光デイスクの最外周に到るのを検知
する第１の受光素子と、発光素子より発せられる
光を受光し、光学式ピツクアツプが光デイスクの
最内周に到るのを検知する第２の受光素子が設け
られ、光学式ピツクアツプの移動によつて、前記
第１及び第２の受光素子への光の供給が遮断可能
となるように光学式ピツクアツプに位置検出片を
取付ける光学式ピツクアツプの位置検出片の取付
構造であつて、前記位置検出片が二又に分かれて
、第１の受光素子への光の供給を遮断する第１の
位置検出部と、第２の受光素子への光の供給を遮
断する第２の位置検出部が形成されており、第１
及び第２の位置検出部の位置調整がそれぞれ独立
して行なえるようにされていることを特徴とする
光学式ピツクアツプの位置検出片の取付構造。 A first light-receiving element receives light emitted from the light-emitting element and detects when the optical pick-up reaches the outermost periphery of the optical disk; A second light-receiving element is provided to detect when the light reaches the innermost circumference, and an optical pickup is provided so that the supply of light to the first and second light-receiving elements can be cut off by moving the optical pickup. A mounting structure for a position detection piece of an optical pickup in which a position detection piece is attached to an optical pickup, wherein the position detection piece is divided into two parts and a first position where the supply of light to the first light receiving element is cut off. A detection section and a second position detection section that cuts off the supply of light to the second light receiving element are formed, and the first
A mounting structure for a position detection piece of an optical pickup, characterized in that the positions of the second position detection section and the second position detection section can be adjusted independently.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3919188U JPH01146364U (en) | 1988-03-24 | 1988-03-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3919188U JPH01146364U (en) | 1988-03-24 | 1988-03-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01146364U true JPH01146364U (en) | 1989-10-09 |
Family
ID=31265704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3919188U Pending JPH01146364U (en) | 1988-03-24 | 1988-03-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01146364U (en) |
-
1988
- 1988-03-24 JP JP3919188U patent/JPH01146364U/ja active Pending