JPH02135917U

JPH02135917U -

Info

Publication number: JPH02135917U
Application number: JP4254489U
Authority: JP
Priority date: 1989-04-13
Filing date: 1989-04-13
Publication date: 1990-11-13
Anticipated expiration: 2004-04-13
Also published as: JPH0728584Y2

Description

[Brief explanation of drawings]

第１図はこの考案の実施例の対物レンズアクチ
ユエータの平面図、第２図は第１図におけるＡ−
Ａ断面図、第３図は第１図におけるＢ−Ｂ断面図
、第４図は同実施例の対物レンズ保持部材を示す
上面図、第５図は同下面図、第６図は同断面図、
第７図ａはこの考案の実施例における対物レンズ
保持部材の突起部を示す平面図、第７図ｂは同正
面図、第８図ａはこの考案の他の実施例における
対物レンズ保持部材の突起部を示す平面図、第８
図ｂは同正面図、第９図は従来の弾性支持体を示
す正面図、第１０図は同側面図、第１１図ａは従
来の対物レンズ保持部材の突起部を示す平面図、
第１１図ｂは同正面図である。１……ベース、２……対物レンズ保持部材、２
ａ……突起部、３……対物レンズ、４……バラン
サー、５……弾性支持体、６……ヨーク、６ａ…
…内ヨーク、６ｂ……外ヨーク、７……永久磁石
、８……主軸、９……フオーカシングコイル、１
０……トラツキングコイル、１１……軸受け。 FIG. 1 is a plan view of an objective lens actuator according to an embodiment of this invention, and FIG.
A sectional view, FIG. 3 is a BB sectional view in FIG. 1, FIG. 4 is a top view showing the objective lens holding member of the same embodiment, FIG. 5 is a bottom view of the same, and FIG. 6 is a sectional view of the same. ,
FIG. 7a is a plan view showing the protrusion of the objective lens holding member in an embodiment of this invention, FIG. 7b is a front view of the same, and FIG. 8a is a plan view of the objective lens holding member in another embodiment of this invention. Plan view showing the protrusion, No. 8
Figure b is a front view of the same, Figure 9 is a front view showing a conventional elastic support, Figure 10 is a side view of the same, Figure 11a is a plan view showing a protrusion of a conventional objective lens holding member,
FIG. 11b is a front view of the same. 1...Base, 2...Objective lens holding member, 2
a... Protrusion, 3... Objective lens, 4... Balancer, 5... Elastic support, 6... Yoke, 6a...
...Inner yoke, 6b...Outer yoke, 7...Permanent magnet, 8...Main shaft, 9...Focusing coil, 1
0...Tracking coil, 11...Bearing.

Claims

[Scope of utility model registration request]

An objective lens actuator for an optical pickup, in which an elastic support is disposed between an objective lens holding member and a base, and the elastic support applies a restoring force to the objective lens holding member in response to displacement of the objective lens holding member. , a protrusion or a recess is provided on the surface of the protrusion that fits into the hole of the elastic support provided in the objective lens holding member, and the protrusion of the protrusion is provided on the inner surface of the hole that fits with the protrusion of the elastic support. 1. An objective lens actuator for an optical pickup, characterized in that an objective lens actuator for an optical pickup is provided with a concave portion or a convex portion that engages with the concave portion or the concave portion.