Photovoltaic powering and control system for electrochromic windows
US6055089A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 1999 |
| Grant date | Apr 25, 2000 |
| Priority date | — |
| Expiry date | Feb 25, 2019 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B2009/2476
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A sealed insulated glass unit is provided with an electrochromic device for modulating light passing through the unit. The electrochromic device is controlled from outside the unit by a remote control electrically unconnected to the device. Circuitry within the unit may be magnetically controlled from outside. The electrochromic device is powered by a photovoltaic cells. The photovoltaic cells may be positioned so that at least a part of the light incident on the cell passes through the electrochromic device, providing a form of feedback control. A variable resistance placed in parallel with the electrochromic element is used to control the response of the electrochromic element to changes in output of the photovoltaic cell.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.