Pioneer Corporation

Tsuyoshi Iwano

Masayuki Koyama

Yuichi Mizuuchi

Masaya Murata

Takehiko Hayashi

A laser light source () and a heat-radiating plate () are provided on a pickup base (). The laser light source () irradiates a laser beam to an optical disk (). The heat-radiating plate () has at least one part exposed outside the pickup base (), having a predetermined distance between the heat-radiating plate () and the pickup base (), and radiates heat generated by the laser light source (). The plate () can radiate heat also from a surface opposing the pickup base () and can therefore have a high heat-radiating efficiency.

Pickup device with heat-radiating mechanism

A communication hole () is provided in a pickup base (). A laser light source () is provided at an end of the communication hole (). A grating () is provided at another end of the communication hole (). The communication hole () is provided with a heat radiation path () which connects the inside of the communication hole () with the outside of the pickup base (). Heat generated from the laser light source () is radiated from the heat radiation path ().

Growing community of inventors

Tokorozawa, Japan

Tsuyoshi Iwano