JPH02117724U - - Google Patents
Info
- Publication number
- JPH02117724U JPH02117724U JP2652189U JP2652189U JPH02117724U JP H02117724 U JPH02117724 U JP H02117724U JP 2652189 U JP2652189 U JP 2652189U JP 2652189 U JP2652189 U JP 2652189U JP H02117724 U JPH02117724 U JP H02117724U
- Authority
- JP
- Japan
- Prior art keywords
- movable body
- coil
- optical head
- composite support
- axis 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
- 239000002131 composite material Substances 0.000 claims description 4
- 230000005484 gravity Effects 0.000 claims description 2
- 239000013013 elastic material Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Optical Recording Or Reproduction (AREA)
Description
第１図は本考案に係る光ヘツドの要部断面図、
第２図は同上図における部材に作用する力学的モ
デル図、第３図は周波数特性図である。
１……可動体、４……複合支持体、７……剛体
板、８……弾性板、９……板ばね、Ｇ……重心。
FIG. 1 is a sectional view of the main parts of the optical head according to the present invention.
FIG. 2 is a mechanical model diagram that acts on the member in the same figure as above, and FIG. 3 is a frequency characteristic diagram. DESCRIPTION OF SYMBOLS 1... Movable body, 4... Composite support body, 7... Rigid plate, 8... Elastic plate, 9... Leaf spring, G... Center of gravity.
Claims (1)
この可動体を光軸方向可動にハウジング中に支持
する支持手段と、上記ハウジング中に構成される
磁気回路を有し、上記コイルを上記磁気回路中に
配すると共に、上記コイルに通電して上記可動体
を上記光軸方向に駆動制御するようにした光ヘツ
ドにおいて、 上記支持手段が、上記可動体の重心位置に設け
られ少なくとも片端がナイフエツジ支持された複
合支持体と、この複合支持体の上下位置に各々設
けられた板ばねからなり、上記複合支持体が剛性
板と弾性板の組み合わせからなることを特徴とす
る光ヘツド。 ２ 請求項１において、板ばねは剛性の弱いもの
、弾性材は上記板ばねの少なくとも１０倍以上の
剛性を有することを特徴とする光ヘツド。[Scope of claims for utility model registration] 1. A movable body equipped with an objective lens and a coil,
It has a support means for supporting the movable body in a housing so as to be movable in the optical axis direction, and a magnetic circuit configured in the housing, and the coil is disposed in the magnetic circuit, and the coil is energized to In the optical head in which the movable body is driven and controlled in the optical axis direction, the support means includes a composite support provided at the center of gravity of the movable body and having at least one end supported by a knife edge, and an upper and lower part of the composite support. What is claimed is: 1. An optical head comprising leaf springs provided at respective positions, and wherein said composite support body comprises a combination of a rigid plate and an elastic plate. 2. The optical head according to claim 1, wherein the leaf spring has low rigidity, and the elastic material has a rigidity at least 10 times that of the leaf spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2652189U JPH02117724U (en) | 1989-03-08 | 1989-03-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2652189U JPH02117724U (en) | 1989-03-08 | 1989-03-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02117724U true JPH02117724U (en) | 1990-09-20 |
Family
ID=31248225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2652189U Pending JPH02117724U (en) | 1989-03-08 | 1989-03-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02117724U (en) |
-
1989
- 1989-03-08 JP JP2652189U patent/JPH02117724U/ja active Pending