Photo collecting device

Application Number: 00108258
Application Date: 2000.04.28
Publication Number: 1271932
Publication Date: 2000.11.01
Priority Information: 1999/4/28 JP 121474/99
International: G11B7/12;G11B7/135;G11B33/12
Applicant(s) Name: Sankyo Seiki Mfg. (Seisakusho) Co., Ltd.
Inventor(s) Name: Takemura Kiyoshi;Uno Katsu
Patent Agency Code: 31100
Patent Agent: sun jingguo
Abstract The invention provides an optical pickup device. The optical pickup device 1 is equipped with a resin frame 2 and, as mounted thereon, a semiconductor laser 3 for DVD, A flange 34 of the semiconductor laser 3 is closely stuck to a contact area 14 of a copper cooling wheel 13 attached to the rear face of the resin frame 2. The cooling wheel 13 is attached to the resin frame 2 with two metallic screws 41, 42. The heat generated by the semiconductor laser 3 is transmitted to the cooling wheel 13 through the contact area 14 and discharged to the outside through this cooling wheel 13 and the screws 41, 42. Consequently, a situation can be avoided in which the periphery of the semiconductor laser 3 is overheated, causing a bad effect such as the shorter life of the laser.