Patent · US Active

Optical device with liquid crystal alignment

US11409156B2 · kind B2 · utility

0Cited by

2References

15Claims

0Family size

Assignee

SIHTO N.V. · BE

Inventors

Jelle De Smet · Zwijnaarde, BE
Paul Marchal · San Francisco, US
Peter Cirkel · Brugge, BE

Key dates

Filing date	Aug 24, 2018
Grant date	Aug 9, 2022
Priority date	—
Expiry date	Aug 24, 2038

Classification

Technology area (CPC G)Physics
CPC primaryG02F2203/28
WIPO fieldOptics
WIPO sectorInstruments

Abstract

An optical device, comprising: —a first electrode layer; —a second electrode layer provided at a distance from the first electrode layer; —the first and second electrode layer being light transmitting; wherein the optical device further comprises, in between the first and the second electrode layers: o a diffractive optical element adjacent to the first electrode layer and comprising at least one sloped surface; and o a liquid crystalline material filling a space between the sloped surface and the second electrode layer; the liquid crystalline material having a pretilt that compensates for a slope angle of the at least one sloped surface.

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