Patent · US Active

Device for operating functional elements having electrically controllable optical properties

US11054681B2 · kind B2 · utility

0Cited by

2References

18Claims

0Family size

Assignee

SAINT-GOBAIN GLASS FRANCE · FR

Inventors

Florian Manz · Aachen, DE
Patrick Weber · Alsdorf, DE
Christian EFFERTZ · Aachen, DE
Thorsten Dragas · Geilenkirchen, DE

Key dates

Filing date	Jul 10, 2018
Grant date	Jul 6, 2021
Priority date	—
Expiry date	Jul 10, 2038

Classification

Technology area (CPC G)Physics
CPC primaryG02F1/009
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A device having a functional element having electrically controllable optical properties, includes an electrical energy source having an output voltage U, a functional element having electrically controllable optical properties, and at least two supply lines, by means of which the electrical energy source and the functional element are connected. The output voltage U has an alternating voltage having a frequency f from 40 Hz to 210 Hz, a maximum amplitude Umax from 24 V to 100 V, and a slope in the range of the output voltage U between −80% Umax and 80% Umax from 0.05*Umax/100 μs to 0.1*Umax/100 μs and in the range of the output voltage U between 80% Umax and −80% Umax from −0.05*Umax/100 μs to −0.1*Umax/100 μs.

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