JPH01154524U

JPH01154524U -

Info

Publication number: JPH01154524U
Application number: JP5201588U
Authority: JP
Priority date: 1988-04-18
Filing date: 1988-04-18
Publication date: 1989-10-24

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す対物レンズア
クチユエータの一部切り欠きの斜視図、第２図は
同側面図、第３図は同要部の平面図、第４図は他
の実施例を示す対物レンズアクチユエータの平面
図、第５図は従来の対物レンズアクチユエータの
斜視図である。１１，３１……対物レンズ、１２，３２……対
物レンズホルダ、１５，３３……固定台、１６，
３５……ヒンジ式平行板ばね、１６ａ，３５ａ…
…フオーカシング方向支持用ヒンジ部、１６ｂ，
３５ｂ……穴、１８，３４……トラツキング方向
支持用ヒンジ部。 Fig. 1 is a partially cutaway perspective view of an objective lens actuator showing an embodiment of the present invention, Fig. 2 is a side view of the same, Fig. 3 is a plan view of the main part, and Fig. 4 is another one. FIG. 5 is a plan view of an objective lens actuator showing an embodiment of the present invention, and FIG. 5 is a perspective view of a conventional objective lens actuator. 11, 31... Objective lens, 12, 32... Objective lens holder, 15, 33... Fixing base, 16,
35...Hinged parallel leaf spring, 16a, 35a...
...Focusing direction support hinge part, 16b,
35b...hole, 18, 34...hinge portion for tracking direction support.

Claims

[Claims for Utility Model Registration] 1. An objective lens actuator in which an objective lens holder with an objective lens attached thereto is supported so as to be movable in the focusing direction via two upper and lower hinged parallel plate springs, wherein the upper hinge type An objective lens actuator characterized in that an objective lens holder is arranged in a space between a parallel plate spring and a lower hinge type parallel plate spring. 2. The objective lens holder is connected via a tracking direction driving hinge to the surface of the lens holder support provided on the other end of the hinged parallel plate spring, which has one end directly connected to the fixing base, on the fixing base side. The objective lens actuator according to claim 1, characterized in that: 3. The objective lens holder is directly fixed to a surface of a lens holder support part on the side of the fixed base provided on the other end side of a hinge type parallel plate spring whose one end side is connected to the fixed base via a tracking direction support hinge part. The objective lens actuator according to claim 1, characterized in that: 4. The objective lens actuator according to claim 1, 2, or 3, wherein the hinge type parallel plate spring has a hole through which a light beam passes.