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. 19, 1983
Filed:
Feb. 14, 1980
Applicant:
Inventors:
Assignee:
Siemens Aktiengesellschaft, Berlin & Munich, DE;
Primary Examiner:
Int. Cl.
CPC ...
G02F / ; G02F / ;
U.S. Cl.
CPC ...
350345 ; 3503 / ; 350356 ; 350357 ; 350362 ;
Abstract
An electro-optical display device has a fluorescently activated plate disposed in front of a passive display in the line of sight of a viewer. The entire surface of the fluorescently activated plate is uncovered and is available for collecting ambient light to provide an image of increased intensity and allowing the device to be utilized in environments having low optical radiation levels. The fluorescently activated plate has exit windows thereon for retransmitting the light as controlled by the switchable regions of the passive display in a designated pattern to a viewer.