JPS62153620U - - Google Patents
Info
- Publication number
- JPS62153620U JPS62153620U JP3946086U JP3946086U JPS62153620U JP S62153620 U JPS62153620 U JP S62153620U JP 3946086 U JP3946086 U JP 3946086U JP 3946086 U JP3946086 U JP 3946086U JP S62153620 U JPS62153620 U JP S62153620U
- Authority
- JP
- Japan
- Prior art keywords
- lens holder
- light emitting
- emitting element
- position detection
- actuator
- 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 6
- 230000004907 flux Effects 0.000 claims 2
- 230000003287 optical effect Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 1
Description
第１図および第２図は本考案の一実施例におけ
るアクチユエータの説明的斜視図および平面図、
第３図ａ，ｂは対物レンズの位置ずれ状態を表わ
した説明的側面図、第４図ａ，ｂはトラツク信号
を表わした線図、第５図は従来のアクチユエータ
を示した説明的斜視図、第６図は位置検出素子の
拡大平面図、第７図および第８図は位置信号の変
動を表わした線図、第９図および第１０図発光素
子の強度分布を表わした模式的分布図および線図
、第１１図は発光素子の駆動電流の制御方法を示
した線図である。
１１……対物レンズ、１２……レンズホルダ、
１３……発光素子、１４……アパーチヤ、１５…
…位置検出素子。
1 and 2 are an explanatory perspective view and a plan view of an actuator in an embodiment of the present invention,
FIGS. 3a and 3b are explanatory side views showing the positional deviation state of the objective lens, FIGS. 4a and 4b are diagrams showing track signals, and FIG. 5 is an explanatory perspective view showing a conventional actuator. , FIG. 6 is an enlarged plan view of the position detection element, FIGS. 7 and 8 are diagrams showing fluctuations in the position signal, and FIGS. 9 and 10 are schematic distribution charts showing the intensity distribution of the light emitting element. FIG. 11 is a diagram showing a method of controlling a driving current of a light emitting element. 11...Objective lens, 12...Lens holder,
13...Light emitting element, 14...Aperture, 15...
...Position detection element.
Claims (1)
に配置された発光素子と位置検出素子とにより位
置検出装置を構成し、上記発光素子からの発光束
を、レンズホルダ側に貫通形成されたアパーチヤ
を通して位置検出素子上に照射し、レンズホルダ
の移動に伴う位置検出素子の電気的出力変動によ
つてレンズホルダの位置を検出するようにした光
ピツクアツプのアクチユエータにおいて、上記発
光素子から発せられる光束の所定領域部分が常時
位置検出素子上に照射されるように、該発光素子
を、レンズホルダのアパーチヤと一体的に設置し
てなることを特徴とする光ピツクアツプのアクチ
ユエータ。 A position detection device is constituted by a light emitting element and a position detection element arranged to sandwich a lens holder that holds an objective lens, and the luminous flux from the light emitting element is passed through an aperture formed on the lens holder side to the position detection element. In the actuator of the optical pickup, which detects the position of the lens holder by emitting light upward and detecting the position of the lens holder by the electrical output fluctuation of the position detection element as the lens holder moves, a predetermined area portion of the luminous flux emitted from the light emitting element is 1. An actuator for an optical pickup, characterized in that a light emitting element is installed integrally with an aperture of a lens holder so that the light emitting element is always illuminated onto the position detecting element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3946086U JPS62153620U (en) | 1986-03-18 | 1986-03-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3946086U JPS62153620U (en) | 1986-03-18 | 1986-03-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62153620U true JPS62153620U (en) | 1987-09-29 |
Family
ID=30852645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3946086U Pending JPS62153620U (en) | 1986-03-18 | 1986-03-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62153620U (en) |
-
1986
- 1986-03-18 JP JP3946086U patent/JPS62153620U/ja active Pending