JPH0332722U - - Google Patents

Info

Publication number
JPH0332722U
JPH0332722U JP8984789U JP8984789U JPH0332722U JP H0332722 U JPH0332722 U JP H0332722U JP 8984789 U JP8984789 U JP 8984789U JP 8984789 U JP8984789 U JP 8984789U JP H0332722 U JPH0332722 U JP H0332722U
Authority
JP
Japan
Prior art keywords
drive means
piezoelectric drive
piezoelectric
focus actuator
connecting member
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
JP8984789U
Other languages
Japanese (ja)
Other versions
JPH082812Y2 (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 JP8984789U priority Critical patent/JPH082812Y2/en
Publication of JPH0332722U publication Critical patent/JPH0332722U/ja
Application granted granted Critical
Publication of JPH082812Y2 publication Critical patent/JPH082812Y2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Optical Recording Or Reproduction (AREA)

Description

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

第１図は本考案のフオーカスアクチユエータの
第１の実施例の斜視図である。第２図は本考案の
フオーカスアクチユエータの第１の実施例の断面
図である。第３図はバイモルフの拡大断面図であ
る。第４図は本考案フオーカスアクチユエータの
の第１の実施例の要部拡大断面図である。第５図
は本考案のフオーカスアクチユエータの第２の実
施例の要部拡大断面図である。第６図は本考案の
フオーカスアクチユエータの第３の実施例の要部
拡大断面図である。第７図は従来のアクチユエー
タの斜視図である。第８図は従来のバイモルフの
拡大側面図である。 １……対物レンズ、２……対物レンズ保持体、
３……第１の圧電駆動手段、４，５……バイモル
フ、４ａ，４ｂ……圧電素子からなる板、６……
固定部材、７，８……第１の連結部材、７ａ，８
ａ……中央電極、９……支持部材、１０……第２
の圧電駆動手段、１１，１２……バイモルフ、１
３，１４……第２の連結部材、１５ａ，１５ｂ…
…外部電極、１６，１７，１８，１９……積層形
圧電アクチユエータ、２０，２１，２２，２３…
…連結部材、２０ａ，２１ａ……湾曲部、２２ａ
，２３ａ……薄肉部。 FIG. 1 is a perspective view of a first embodiment of the focus actuator of the present invention. FIG. 2 is a sectional view of the first embodiment of the focus actuator of the present invention. FIG. 3 is an enlarged cross-sectional view of the bimorph. FIG. 4 is an enlarged sectional view of a main part of the first embodiment of the focus actuator of the present invention. FIG. 5 is an enlarged sectional view of a main part of a second embodiment of the focus actuator of the present invention. FIG. 6 is an enlarged sectional view of a main part of a third embodiment of the focus actuator of the present invention. FIG. 7 is a perspective view of a conventional actuator. FIG. 8 is an enlarged side view of a conventional bimorph. 1...Objective lens, 2...Objective lens holder,
3...First piezoelectric drive means, 4, 5...Bimorph, 4a, 4b...Plate made of piezoelectric elements, 6...
Fixed member, 7, 8...First connecting member, 7a, 8
a...Central electrode, 9...Supporting member, 10...Second
piezoelectric drive means, 11, 12...bimorph, 1
3, 14... second connecting member, 15a, 15b...
...External electrode, 16, 17, 18, 19... Laminated piezoelectric actuator, 20, 21, 22, 23...
...Connection member, 20a, 21a...Curved portion, 22a
, 23a... Thin wall portion.

Claims (1)

【実用新案登録請求の範囲】 １ 一対の互いに略平行な圧電板よりなる第１の
圧電駆動手段と第２の圧電駆動手段とを備え、 前記第１の圧電駆動手段に屈曲可能な連結部材
と支持部材を介して前記第２の圧電駆動手段を取
り付け、該第２の圧電駆動部材に対物レンズ保持
体を取り付けたフオーカスアクチユエータ。 ２ 前記屈曲可能な連結部材を圧電板の電極で構
成した実用新案登録請求の範囲第１項記載のフオ
ーカスアクチユエータ。 ３ 前記屈曲可能な連結部材を弾性を有する板状
部材で構成した実用新案登録請求の範囲第１項記
載のフオーカスアクチユエータ。[Claims for Utility Model Registration] 1. A first piezoelectric drive means and a second piezoelectric drive means each comprising a pair of piezoelectric plates substantially parallel to each other, and a bendable connecting member connected to the first piezoelectric drive means; A focus actuator in which the second piezoelectric drive means is attached via a support member, and an objective lens holder is attached to the second piezoelectric drive member. 2. The focus actuator according to claim 1, wherein the bendable connecting member is constituted by a piezoelectric plate electrode. 3. The focus actuator according to claim 1, wherein the bendable connecting member is made of an elastic plate-like member.
JP8984789U 1989-08-01 1989-08-01 Focus actuator Expired - Fee Related JPH082812Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8984789U JPH082812Y2 (en) 1989-08-01 1989-08-01 Focus actuator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8984789U JPH082812Y2 (en) 1989-08-01 1989-08-01 Focus actuator

Publications (2)

Publication Number Publication Date
JPH0332722U true JPH0332722U (en) 1991-03-29
JPH082812Y2 JPH082812Y2 (en) 1996-01-29

Family

ID=31639405

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8984789U Expired - Fee Related JPH082812Y2 (en) 1989-08-01 1989-08-01 Focus actuator

Country Status (1)

Country Link
JP (1) JPH082812Y2 (en)

Also Published As

Publication number Publication date
JPH082812Y2 (en) 1996-01-29

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