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:
Mar. 07, 1995
Filed:
Jan. 11, 1994
Applicant:
Inventors:
Tadashi Taniguchi, Kanagawa, JP;
Chiaki Kojima, Kanagawa, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
250216 ; 257436 ; 369112 ;
Abstract
In an optical apparatus according to the present invention, a light-absorbing film is formed between a light-receiving element and an optical semitransparent film formed on the light-receiving element to cause the light-receiving element to partially receive incident light. In addition, in an optomagnetic recording polarization optical apparatus according to the present invention, a prism for guiding a reflected light component from an optomagnetic recording medium to a light-receiving element and the light-receiving element are arranged on the same substrate.