Direct and indirect light diffusing devices and methods
US8098433B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2009 |
| Grant date | Jan 17, 2012 |
| Priority date | — |
| Expiry date | Dec 11, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/147
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Some embodiments provide a daylighting apparatus comprising an internally reflective tube configured to direct daylight from a first end of the tube to a second end of the tube opposite the first end. A diffuser can be positioned at the second end of the tube. The diffuser can comprise a first optical structure configured such that, when the daylighting apparatus is installed with the first end positioned outside a room and the second end positioned to provide light to the room, a reflected portion of the daylight is directed towards at least one upper region (e.g., a ceiling or upper wall surface) of the room and a transmitted portion of the daylight is directed towards at least one lower region (e.g., a floor surface) of the room.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.