Patent · US Active

Optical element with a fresnel structure, and display device with such an optical element

US11204498B2 · kind B2 · utility

0Cited by

1References

19Claims

0Family size

Assignee

tooz technologies GmbH · DE

Inventors

Christoph Menke · Oberkochen, DE
Eduard Schmidt · Bad Abbach, DE
Wolfgang Singer · Aalen, DE
Norbert Kerwien · Mögglingen, DE

Key dates

Filing date	Jul 25, 2014
Grant date	Dec 21, 2021
Priority date	—
Expiry date	Nov 4, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG02B2027/0178
WIPO fieldOptics
WIPO sectorInstruments

Abstract

Provided is an optical element with a Fresnel structure with several Fresnel segments. Each Fresnel segment has an optically active facet, the shape of which is part of a predetermined surface. The predetermined surfaces of the optically active facets differ in terms of their curvature profile.

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