In-pavement directional LED luminaire
US6902291B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 16, 2003 |
| Grant date | Jun 7, 2005 |
| Priority date | — |
| Expiry date | Jul 16, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B19/0061
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An in-pavement high intensity LED-based luminaire includes a housing, a power controller, a light module and a thermoelectric cooling device. The housing includes a generally flat top surface having at least one transparent window for output light passage. The power controller has an input and an output, wherein the input is electrically connected to an airfield power infrastructure and the output is electrically connected to a light module. The light module includes multiple high flux LEDs and a non-imaging light transformer. The non-imaging light transformer includes an input end opposite an output end, a refractive member located around the LED optical axis, and a total internal reflection member. The thermoelectric cooling device provides LED temperature control for emitted luminous flux, color and spatial intensity distribution stabilization, and is electrically connected to the power controller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.