Control system for electrochromic devices
US7277215B2 · kind B2 · utility
243Cited by
8References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 21, 2006 |
| Grant date | Oct 2, 2007 |
| Priority date | — |
| Expiry date | Apr 21, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S359/90
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method of determining the transmission state of an electrochromic device includes applying a voltage across the electrochromic device, using the applied voltage and current for calculating leakage current of the electrochromic device and determining ionic current as the difference between the applied current and the leakage current. The method includes using the ionic current for determining the transmission state of the electrochromic device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.