JPS6229640U

JPS6229640U -

Info

Publication number: JPS6229640U
Application number: JP11951385U
Authority: JP
Priority date: 1985-08-02
Filing date: 1985-08-02
Publication date: 1987-02-23

Description

[Brief explanation of the drawing]

第１図〜第４図は本考案の実施例を示すもので
あり、第１図は光学式ピツクアツプの光学部材取
付機構を示す平面図、第２図は第１図の−断
面図、第３図はコンパクトデイスクプレーヤの光
学式ピツクアツプの概略構造を示す平面図、第４
図はその側面図、第５図は従来の光学部材取付機
構の側面断面図、第６図は光学式ピツクアツプの
動作を示す原理図である。２……発光素子、３……ビームスプリツタ、４
……コリメートレンズ群、４ａ……平凹レンズ、
４ｂ……平凸レンズ、４ｃ……スペーサ、９……
シリンドリカルレンズ、１１……凹レンズ、１４
……受光素子、３０……スライドベース、Ａ，Ｂ
，Ｃ……スライドベース上の光学部材位置決め面
。 1 to 4 show an embodiment of the present invention, in which FIG. 1 is a plan view showing an optical member mounting mechanism of an optical pickup, FIG. 2 is a cross-sectional view of FIG. The figure is a plan view showing the schematic structure of the optical pickup of a compact disc player.
5 is a side sectional view of a conventional optical member mounting mechanism, and FIG. 6 is a principle diagram showing the operation of an optical pickup. 2...Light emitting element, 3...Beam splitter, 4
... Collimating lens group, 4a ... Plano-concave lens,
4b... Plano-convex lens, 4c... Spacer, 9...
Cylindrical lens, 11... Concave lens, 14
...Photodetector, 30...Slide base, A, B
, C... Optical member positioning surface on the slide base.

Claims

[Scope of utility model registration request]

An objective lens facing the recording medium, a beam splitter located on the optical axis connecting the light emitting element and the objective lens, a collimating lens group consisting of multiple lenses, and a beam splitter located on the optical axis reflected by the beam splitter. In an optical pickup having optical members including a concave lens, a cylindrical lens, and a light receiving element located on an extension of the reflective optical axis, the beam splitter, the concave lens, and the cylindrical lens are bonded together, and In the collimating lens group, each lens is fixed with a spacer, and one lens is glued to the beam splitter, and this integrated optical system unit is positioned and fixed with glue on the base. An optical member support mechanism for an optical pick-up, which is characterized by: