Optical pickup device
AssigneeSharp Kabushiki Kaisha
InventorsTatsunori Yamamoto, Makoto Akinaga
Life of this patent
Estimating the term…
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.
Claims6
An optical pickup device, comprising:
- a housing;
- an optical part which is attached to the housing and includes a light source for emitting a laser beam and/or a light sensing device capable of detecting the laser beam;
- and
- an attaching structure which is provided in an optical part attaching position in the housing and can attach the optical part directly to the housing, wherein the attaching structure has an elastic buffer for protecting the light source and/or the light sensing device of the optical part at the time of attaching the optical part to the housing and adjusting the position of the optical part in an optical path length directions,
- wherein the recessed portion of the attaching structure has a temporary holding portion so that the optical part is temporarily held in a state where movement in the vertical direction is regulated.
Dependencies are inferred from the claim text.