JPS6423717U - - Google Patents

Info

Publication number
JPS6423717U
JPS6423717U JP11548787U JP11548787U JPS6423717U JP S6423717 U JPS6423717 U JP S6423717U JP 11548787 U JP11548787 U JP 11548787U JP 11548787 U JP11548787 U JP 11548787U JP S6423717 U JPS6423717 U JP S6423717U
Authority
JP
Japan
Prior art keywords
objective lens
view
magnetic flux
magnetic circuit
position 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.)
Granted
Application number
JP11548787U
Other languages
Japanese (ja)
Other versions
JPH0614252Y2 (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1987115487U priority Critical patent/JPH0614252Y2/en
Publication of JPS6423717U publication Critical patent/JPS6423717U/ja
Application granted granted Critical
Publication of JPH0614252Y2 publication Critical patent/JPH0614252Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
  • Optical Recording Or Reproduction (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本考案による対物レンズの位置検出部
材をフオーカツシング制御用の磁気回路の磁束中
に設けた状態を示す平面図、第2図は同じくその
断面図、第3図は本考案による対物レンズの位置
検出部材をトラツキング制御用の磁気回路の磁束
中に設けた状態を示す斜視図、第4図は同じくそ
の1部分の平面図、第5図は従来の対物レンズ駆
動装置の構成を示す断面図、第6図は同じくその
平面図である。 31…対物レンズアクチユエータ(駆動装置)
、33…外側ヨーク、34a,34b…内側ヨー
ク、35A,35B…永久磁石、46…レンズホ
ルダ、48…対物レンズ、49…フオーカツシン
グコイル、51…トラツキングコイル、53…ホ
ール素子、59,60,61,62…ヨーク、6
3,64…永久磁石、70…フオーカツシングコ
イル、71,72…トラツキングコイル、79…
ホール素子。
FIG. 1 is a plan view showing the position detection member of the objective lens according to the present invention installed in the magnetic flux of the magnetic circuit for focusing control, FIG. 2 is a cross-sectional view thereof, and FIG. 3 is the same according to the present invention. A perspective view showing the position detection member of the objective lens installed in the magnetic flux of the magnetic circuit for tracking control, FIG. 4 is a plan view of a portion thereof, and FIG. 5 shows the configuration of a conventional objective lens drive device. The sectional view shown in FIG. 6 is also a plan view thereof. 31...Objective lens actuator (drive device)
, 33... Outer yoke, 34a, 34b... Inner yoke, 35A, 35B... Permanent magnet, 46... Lens holder, 48... Objective lens, 49... Focusing coil, 51... Tracking coil, 53... Hall element, 59, 60, 61, 62...Yoke, 6
3, 64... Permanent magnet, 70... Focusing coil, 71, 72... Tracking coil, 79...
Hall element.

補正 昭62.9.18 考案の名称を次のように補正する。 考案の名称 対物レンズの位置検出装置 実用新案登録請求の範囲、図面の簡単な説明を
次のように補正する。
Amendment September 18, 1982 The name of the invention is amended as follows. Title of the invention Objective lens position detection device The scope of the utility model registration claims and the brief description of the drawings are amended as follows.

【実用新案登録請求の範囲】 対物レンズを2次元方向に移動自在とする対物
レンズ駆動装置を具備し、そのトラツキング磁気
回路の磁束中若しくはフオーカシング磁気回路の
磁束中に磁電変換素子を配置して対物レンズの位
置検出を行なうようにしたことを特徴とする対物
レンズの位置検出装置。
[Claims for Utility Model Registration] The objective lens is equipped with an objective lens driving device that allows the objective lens to move freely in two-dimensional directions, and a magnetoelectric conversion element is disposed in the magnetic flux of the tracking magnetic circuit or the magnetic flux of the focusing magnetic circuit. An objective lens position detection device characterized by detecting the position of a lens.

【図面の簡単な説明】 第1図は本考案による対物レンズの位置検出部
材をフオーカシング制御用の磁気回路の磁束中に
設けた状態を示す平面図、第2図は同じくその断
面図、第3図は本考案による対物レンズの位置検
出部材をトラツキング制御用の磁気回路の磁束中
に設けた状態を示す斜視図、第4図は同じくその
底面図、第5図は第3図の位置検出部材の1部分
の平面図、第6図は従来の対物レンズ駆動装置の
構成を示す断面図、第7図は同じくその平面図で
ある。 31…対物レンズアクチユエータ(駆動装置)
、33…外側ヨーク、34a,34b…内側ヨー
ク、35A,35B…永久磁石、46…レンズホ
ルダ、48…対物レンズ、49…フオーカシング
コイル、51…トラツキングコイル、53…ホー
ル素子、59,60,61…ヨーク突出部、62
…ヨーク、63,64…永久磁石、70…フオー
カシングコイル、71,72…トラツキングコイ
ル、79…ホール素子。
[Brief Description of the Drawings] Fig. 1 is a plan view showing a state in which the position detection member of the objective lens according to the present invention is provided in the magnetic flux of the magnetic circuit for focusing control, Fig. 2 is a cross-sectional view thereof, and Fig. 3 The figure is a perspective view showing the position detection member of the objective lens according to the present invention installed in the magnetic flux of the magnetic circuit for tracking control, Figure 4 is a bottom view thereof, and Figure 5 is the position detection member of Figure 3. FIG. 6 is a sectional view showing the configuration of a conventional objective lens driving device, and FIG. 7 is a plan view of the same. 31...Objective lens actuator (drive device)
, 33... Outer yoke, 34a, 34b... Inner yoke, 35A, 35B... Permanent magnet, 46... Lens holder, 48... Objective lens, 49... Focusing coil, 51... Tracking coil, 53... Hall element, 59, 60, 61...Yoke protrusion, 62
...Yoke, 63, 64... Permanent magnet, 70... Focusing coil, 71, 72... Tracking coil, 79... Hall element.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 対物レンズを2次元方向に移動自在とする対物
レンズ駆動装置を具備し、そのトラツキング磁気
回路の磁束中若しくはフオーカツシング磁気回路
の磁束中に磁電変換素子を配置して対物レンズの
位置検出を行なうようにしたことを特徴とする対
物レンズの位置検出装置。
It is equipped with an objective lens driving device that allows the objective lens to move freely in two-dimensional directions, and detects the position of the objective lens by arranging a magnetoelectric conversion element in the magnetic flux of the tracking magnetic circuit or the magnetic flux of the focusing magnetic circuit. An objective lens position detection device characterized in that:
JP1987115487U 1987-07-28 1987-07-28 Objective lens position detector Expired - Lifetime JPH0614252Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987115487U JPH0614252Y2 (en) 1987-07-28 1987-07-28 Objective lens position detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987115487U JPH0614252Y2 (en) 1987-07-28 1987-07-28 Objective lens position detector

Publications (2)

Publication Number Publication Date
JPS6423717U true JPS6423717U (en) 1989-02-08
JPH0614252Y2 JPH0614252Y2 (en) 1994-04-13

Family

ID=31357189

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987115487U Expired - Lifetime JPH0614252Y2 (en) 1987-07-28 1987-07-28 Objective lens position detector

Country Status (1)

Country Link
JP (1) JPH0614252Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03203033A (en) * 1989-12-28 1991-09-04 Marantz Japan Inc Brake circuit for tracking of optical pickup

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59157851A (en) * 1983-02-24 1984-09-07 Ricoh Co Ltd Optical disk positioning device
JPS60182522A (en) * 1984-03-01 1985-09-18 Aiwa Co Ltd Optical pickup device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59157851A (en) * 1983-02-24 1984-09-07 Ricoh Co Ltd Optical disk positioning device
JPS60182522A (en) * 1984-03-01 1985-09-18 Aiwa Co Ltd Optical pickup device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03203033A (en) * 1989-12-28 1991-09-04 Marantz Japan Inc Brake circuit for tracking of optical pickup

Also Published As

Publication number Publication date
JPH0614252Y2 (en) 1994-04-13

Similar Documents

Publication Publication Date Title
JPS6423717U (en)
JPS61167026U (en)
JPS63138620U (en)
JPH03115810U (en)
JPS61121519U (en)
JPS6340810U (en)
JPS63114412U (en)
JPS63142012U (en)
JPS62120426U (en)
JPS6358891U (en)
JPH0242216U (en)
JPH0435220U (en)
JPH0345218U (en)
JPS6190026U (en)
JPH0314721U (en)
JPS6322612U (en)
JPH0352822U (en)
JPH0345217U (en)
JPS62101122U (en)
JPS62120427U (en)
JPS62140250U (en)
JPS6418425U (en)
JPH0458079U (en)
JPS6218824U (en)
JPH01116916U (en)