Optical pickup device

Details Optical pickup device Optical pickup device

2007-07-24

2007-07-24

Wellington, Andrea (Department: 2627)

Dynamic optical information storage or retrieval

Dynamic mechanism optical subsystem

Protecting optical transducer

C369S112100

Reexamination Certificate

active

11600484

ABSTRACT:
Light from a light source is led to a condensing lens by a light leading unit and is condensed onto an optical recording medium by the condensing lens. Light reflected from the optical recording medium is led to a light sensing device through a spot adjustment lens facing the light sensing device. Between the spot adjustment lens and the light sensing device, a cylindrical dustproof member is provided. The full periphery of an optical path extending between the spot adjustment lens and the light sensing device is covered with the dustproof member. It can prevent intrusion of a foreign matter such as dusts into the optical path extending between the spot adjustment lens and the light sensing device.

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