JPS6448712U

JPS6448712U -

Info

Publication number: JPS6448712U
Application number: JP14271487U
Authority: JP
Priority date: 1987-09-18
Filing date: 1987-09-18
Publication date: 1989-03-27

Description

[Brief explanation of drawings]

第１図ａはこの考案の第一の実施例を示す正面
図、第１図ｂはその平面図、第２図ａはこの考案
の第二の実施例を示す正面図、第２図ｂはその平
面図、第３図は従来例を示す概略斜視図、第４図
は異なる従来例を示す概略側面図である。３５……半導体レーザ、３６……第１のプレー
ナ型集光素子、３７……第２のプレーナ型集光素
子。 Figure 1a is a front view showing a first embodiment of this invention, Figure 1b is a plan view thereof, Figure 2a is a front view showing a second embodiment of this invention, and Figure 2b is a front view showing a second embodiment of this invention. Its plan view, FIG. 3 is a schematic perspective view showing a conventional example, and FIG. 4 is a schematic side view showing a different conventional example. 35... Semiconductor laser, 36... First planar type condensing element, 37... Second planar type condensing element.

Claims

[Scope of utility model registration request]

In an optical information recording/reproducing device using a semiconductor laser as a light source, which has an asymmetric far-field pattern that is different in half-value angle between parallel and perpendicular directions to the bonding surface, the light emitted from the semiconductor laser is directed to the bonding surface. A first planar condensing element that shapes the perpendicular direction and polarizes the light in a direction parallel to the bonding surface; 1. An optical information recording and reproducing device characterized in that a second planar type light condensing element having no light condensing function is provided in the direction.