Chromogenic light filter and controls
US6528782B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 16, 2000 |
| Grant date | Mar 4, 2003 |
| Priority date | — |
| Expiry date | Jun 16, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/90
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A user-controlled skylight window or the like in which the user can control the light transmitted through the skylight. A chromogenic filter is under automatic control of a control circuit. A user interface permits the user to set the control circuit for desired lighting. A mechanical shutter is likewise controlled to open or close the skylight under control of the user interface. A lamp within the skylight provides nighttime lighting under user control. The diffuseness of light transmitted through the skylight is improved by modifying the diffuseness of various components of the skylight including the filter. Uses of the filter in a variety of systems and with a variety of controls are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.