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. 28, 1989
Filed:
Aug. 20, 1987
Applicant:
Inventors:
Saburo Nonogaki, Tokyo, JP;
Hajime Morishita, Tokyo, JP;
Nobuaki Hayashi, Saitama, JP;
Shoichi Uchino, Hachioji, JP;
Yoshifumi Tomita, Mobara, JP;
Masahiro Nishizawa, Mobara, JP;
Kiyoshi Miura, Mobara, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ; H04N / ;
U.S. Cl.
CPC ...
350164 ; 358 64 ;
Abstract
A light-transmitting layer is formed on a transparent glass panel, the light-transmitting layer having a larger refractive index than that of the glass panel, and a light-absorbing layer having a light-transmitting region is formed on the light-transmitting layer. The light reflected from the interface of the glass panel and the light-absorbing layer is effectively attenuated by the light-transmitting layer, so that it is possible to obtain an excellent image having a considerably strong contrast.