Patent · US Expired

Method of generating a 3-dimensional effect

US7041233B2 · kind B2 · utility

1Cited by

7References

25Claims

0Family size

Assignee

Merck Patent GmbH · DE

Inventors

Matthias Kuntz · Seeheim-Jugenheim, DE
Rodney Riddle · Holzminden, DE
John Patrick · Carthage, US
Robert Hammond-Smith · Fordingbridge, GB

Key dates

Filing date	Jul 9, 2003
Grant date	May 9, 2006
Priority date	—
Expiry date	Jul 25, 2023

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/24802
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

A method for generating a 3-dimensional effect involves providing at least one first image layer of a chiral liquid crystal material, and at least one second image layer of a chiral liquid crystal material, wherein one of the first and second image layers reflects right-handed circularly polarised light and the other reflects left-handed circularly polarised light, is suitable creating a 3-dimensional image that can be used for decorative and security applications.

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