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:
Jan. 18, 1977
Filed:
Sep. 21, 1973
Applicant:
Inventors:
Mitsuru Otake, Mobara, JA;
Saburo Nobutoki, Mobara, JA;
Assignee:
Hitachi, Ltd., , JA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
313371 ; 313388 ; 427 38 ; 427 75 ; 427162 ; 427164 ; 427165 ; 427166 ; 427193 ; 4273 / ; 427355 ; 358 44 ;
Abstract
A stripe-shaped color separation filter for use with an image pickup tube is disclosed which is covered at its one surface with a layer of transparent material such as glass or SiO.sub.2 having a surface thereof which is flat enough to be practical for use with the image pickup tube. The layer of glass or SiO.sub.2 is formed on the filter by directly applying melted materials thereon, melting down (sintering) powdered materials, chemical vapor deposition, sputtering, or vacuum deposition.