The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 27, 2002
Filed:
Aug. 17, 2000
Keizo Tezuka, Taito-ku, JP;
Takeshi Goto, Taito-ku, JP;
Aiwa Co., Ltd., , JP;
Abstract
An optical pickup dustproofing mechanism having a simple structure is provided in which an objective lens is shielded promptly and reliably and adhesion of dust or the like to the objective lens is prevented. A movable portion is able to move along a shaft center direction of a clamper Further, the movable portion is connected to the clamper so as to face a standby position of an optical pickup When a disc is not placed on a turn table the movable portion moves downwardly and shields the objective lens positioned in the standby position. Since adhesion of dust or the like to the objective lens is prevented, the amount of light transmitted onto a photodetector does not decrease and reading failure is prevented. Since the present invention is simply structured such that the movable portion is connected to the clamper as compared to a conventional dustproofing mechanism, the number of components decreases and the structure is simplified. The dustproofing mechanism becomes low cost and failures are minimized.