Patent · US Active

Fresnel projection lens with integrated function for satisfying overhead sign values

US12313235B2 · kind B2 · utility

0Cited by

2References

15Claims

0Family size

Assignee

Hella GmbH & Co. KGaA · DE

Inventors

Carmen Bungenstock · Kleinenberg, DE
Mathias DRUEPPEL · Lippstadt, DE
Gerhard Kloos · Erwitte, DE
Philip Stroop · Schloß Holte-Stukenbrock, DE
Benjamin Willeke · Paderborn, DE

Key dates

Filing date	Oct 11, 2023
Grant date	May 27, 2025
Priority date	—
Expiry date	Oct 11, 2043

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF21S41/255
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A Fresnel projection lens for a headlight of a motor vehicle having a light entry surface, wherein the light entry surface has a smooth or substantially smooth surface, and with a light exit surface. The light exit surface has a plurality of adjacent, in particular annular, flanks, wherein one flank each comprises a bottom, an effective facet, and an interfering facet arranged at a first pitch angle to the effective facet. The effective facet and the interfering facet form a cut edge opposite the bottom. A pass-through area is provided on at least one of the flanks, wherein the pass-through area is angled to the effective facet.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.