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:
Jul. 03, 1984
Filed:
Mar. 23, 1981
Applicant:
Inventors:
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ; H01J / ;
U.S. Cl.
CPC ...
445 35 ; 313371 ;
Abstract
A method for fabrication of an image pickup tube face plate structure comprises adhering a transparent glass sheet material having a thickness of about 40 to 80 microns to a color separation stripe-shaped filter formed on a face plate of the tube, and forming an optically polished surface on a top of the glass sheet while reducing the distance between the top and the stripe filter surface to about 40 microns or less.