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:
Jun. 24, 1997
Filed:
Nov. 28, 1994
Applicant:
Inventors:
Yves Lefort, Pessac, FR;
Gerard Le Paih, Merignac, FR;
Assignee:
Sextant Avionique, Meudon La Foret, FR;
Primary Examiner:
Int. Cl.
CPC ...
A61F / ; G02C / ; G02B / ;
U.S. Cl.
CPC ...
2-63 ; 2432 ; 351165 ;
Abstract
A head-mounted visor with variable transmission has at least two zones with different values of absorption of light. Should the visor be mounted on a pilot's helmet, an upper zone designed for looking at the exterior of the aircraft absorbs more light than a lower zone designed for looking at the dashboard instruments. The application is directed to helmet equipment for tasks comprising swift passages from a very bright space to a darkened space.