JPH0349623U

JPH0349623U -

Info

Publication number: JPH0349623U
Application number: JP11064289U
Authority: JP
Priority date: 1989-09-20
Filing date: 1989-09-20
Publication date: 1991-05-15

Description

[Brief explanation of drawings]

第１図はこの考案の一実施例による対物レンズ
駆動装置をそのカバーを透視して示す平面図、第
２図は第１図の−線の断面図、第３図はその
要部を示す拡大図、第４図は従来の対物レンズ駆
動装置を同様にして示す平面図、第５図および第
６図は第４図のそれぞれ−線および−線
の断面図である。図において、３……対物レンズ、４……対物レ
ンズ保持部材、１３……駆動機構、１５……支持
軸、１６……そのスペーサ、１６ａ……第１の端
面としての凸面、１７……本体フレーム、１７ａ
……第２の端面としての凹面、１８……固定手段
としてのボルトである。なお、各図中同一符号は
同一または相当部分を示す。 Fig. 1 is a plan view of an objective lens drive device according to an embodiment of this invention, as seen through its cover, Fig. 2 is a sectional view taken along the - line in Fig. 1, and Fig. 3 is an enlarged view showing the main parts thereof. 4 are plan views similarly showing a conventional objective lens driving device, and FIGS. 5 and 6 are sectional views taken along the - line and - line in FIG. 4, respectively. In the figure, 3...Objective lens, 4...Objective lens holding member, 13...Drive mechanism, 15...Support shaft, 16...Spacer thereof, 16a...Convex surface as a first end surface, 17...Main body Frame, 17a
. . . A concave surface as a second end surface, 18 . . . A bolt as a fixing means. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims

[Claims for Utility Model Registration] A main body frame, a support shaft attached to the main body frame, a support shaft provided slidably in the axial direction of the support shaft and rotatable around the support shaft, and mounted on a disk. an objective lens holding member that holds an objective lens that forms a light spot so that its optical axis is parallel to the support axis; and an objective lens holding member that adjusts the focus of the light spot and the tracking direction of the disk. a driving mechanism for controlling the position of the objective lens in the focal direction and the tracking direction, wherein a spherical first end surface is formed at a portion of the support shaft that is attached to the main body frame, and the support shaft is provided with a spherical first end surface. A second end surface that fits into the first end surface is formed at the attachment part to the shaft, and the angle between the support shaft and the main body frame can be adjusted by sliding both end surfaces in contact with each other, and further, An objective lens drive device for an optical disk device, comprising a fixing means for fixing a support shaft to a main body frame.