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:
Nov. 10, 1992
Filed:
Mar. 28, 1991
Applicant:
Inventors:
Daniel Segaud, Paris, FR;
Bernard Mauroy, Roissy sur Brie, FR;
Assignee:
Valeo Vision, Bobigny, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21V / ;
U.S. Cl.
CPC ...
362332 ; 362 61 ; 362309 ; 362333 ; 362339 ;
Abstract
The invention provides an intermediate screen for a signal light, the screen being of the type constituted by a plate for passing a flux of light, and including a set of light-deflecting grooves on at least one of its faces, the grooves being essentially concentric and each being defined by two faces of essentially rectilinear profile and of given angles of inclination relative to the normal to the plate. For at least one subset of adjacent grooves, the angles of inclination of the faces defining each groove vary from one groove to another and are such that the sum of said angles is constant.