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:
Jun. 27, 1995
Filed:
Jun. 23, 1994
Sony Corporation, Tokyo, JP;
Abstract
An optical pickup apparatus for recording information signals on an optical recording medium. The apparatus includes a light source radiating a diverging light flux, an object lens on which a light flux radiated from said light source is incident, for converging the light flux on the optical recording medium, a light flux dividing device arranged at a position on a light path between the light source and the object lens at which the light flux remains a diverging light flux, which light flux dividing device divests reflected light flux from the optical recording medium out of the light path, a light detection unit for detecting the reflected light diverted from the light path by the light flux dividing device, and a polarized light dependent light flux separating device arranged at a position on a light path between the light flux dividing device and the light detection device at which the reflected light flux is a converging light flux. In this manner, recording characteristics of information signals may be improved and a simplified structure and a small size of the apparatus may be realized.