JPS62175416U

JPS62175416U -

Info

Publication number: JPS62175416U
Application number: JP6285086U
Authority: JP
Priority date: 1986-04-25
Filing date: 1986-04-25
Publication date: 1987-11-07

Description

[Brief explanation of the drawing]

第１図〜第７図は本考案の一実施例を示すもの
で第１図は光ヘツドの内部構成を示す一部分解の
平面図、第２図は第１図における半導体レーザ取
り付け部近傍の分解斜視図、第３図は半導体レー
ザ取り付け部の拡大断面図、第４図は第３図にお
ける矢視図、第５図は偏心ピン治具による調節
操作の説明図、第６図は回折格子の回動調節操作
の説明図、第７図は偏心ピン治具による調節操作
の他の実施例図、第８図は従来例を示すもので、
光ヘツドの半導体レーザ取り付け部の断面図であ
る。１０…光ヘツドベース、１０ａ…円筒状中空部
、１０ｃ…光源取り付け端面、１０ｄ…ピン穴、
１１…半導体レーザ、１２…レーザホルダ、１３
…回折格子、１５…コリメータレンズ、１６…９
０°ミラー、２３…コイルばね、２４…偏心ピン
治具。 Figures 1 to 7 show one embodiment of the present invention. Figure 1 is a partially exploded plan view showing the internal structure of the optical head, and Figure 2 is an exploded view of the vicinity of the semiconductor laser mounting part in Figure 1. 3 is an enlarged sectional view of the semiconductor laser attachment part, FIG. 4 is a view taken in the direction of the arrow in FIG. 3, FIG. 5 is an explanatory diagram of the adjustment operation using the eccentric pin jig, and FIG. An explanatory diagram of the rotation adjustment operation, FIG. 7 is an illustration of another embodiment of the adjustment operation using an eccentric pin jig, and FIG. 8 is a conventional example.
FIG. 3 is a sectional view of the semiconductor laser mounting portion of the optical head. DESCRIPTION OF SYMBOLS 10... Optical head base, 10a... Cylindrical hollow part, 10c... Light source mounting end surface, 10d... Pin hole,
11... Semiconductor laser, 12... Laser holder, 13
...Diffraction grating, 15...Collimator lens, 16...9
0° mirror, 23...Coil spring, 24...Eccentric pin jig.

Claims

[Scope of utility model registration request]

A diffraction grating rotatably accommodated in the rear end of a cylindrical hollow formed in the light source portion of the optical head base, a coil spring that presses and holds the diffraction grating toward the rear end, and a coil spring that presses and holds the diffraction grating toward the rear end. At the same time, the laser holder attached to the light source attachment end surface of the optical head base and the semiconductor laser attached to this laser holder contact the edge of the laser holder, and the laser holder is moved into the light source attachment end surface. and a pin hole provided on the light source mounting end surface for inserting an eccentric pin for fine movement adjustment.