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:
Sep. 17, 2002
Filed:
May. 08, 2000
Juan Manuel Teijido, Auvernier, CH;
Jean-Charles Poli, Les Geneveys-sur-Coffrane, CH;
Joachim Grupp, Enges, CH;
Hans Peter Herzig, Neuchâtel, CH;
Asulab S.A., Bienne, CH;
Abstract
Solid optical guide ( ) with microprisms ( ) of refractive index n, for uniformly illuminating a surface ( ) in grazing incidence at an angle &thgr; in which a plane angle &dgr; of the cross-section develops with respect to the surface ( ) a substantially perpendicular face ( ) and a substantially parallel face ( ), in which microprisms ( ) are structured in hollows, one facet ( ) of said microprisms oriented towards the face ( ) has its edge ( ) formed with the parallel face ( ) inclined at an angle {right arrow over (&agr;)} with respect to the axis of the guide and its edge ( ) formed with the perpendicular face ( ) inclined at an angle {right arrow over (&ggr;)} with respect to the perpendicular to the surface to be illuminated, the values {right arrow over (&agr;)} and {right arrow over (&ggr;)} being determined from characteristics n, &thgr; and &dgr; of the guide.