Tailored side-emitter perimeter beacon
US8475009B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 8, 2010 |
| Grant date | Jul 2, 2013 |
| Priority date | — |
| Expiry date | Apr 27, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49826
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An optical element for a side emitting light that emits light from a light source at side directions relative to the horizon is disclosed. The optical element has an internal recess adapted to fit over a light source. The internal recess includes a collimating surface and interior refractive surfaces. An exterior refractive surface corresponding to the interior refractive surfaces is provided. A faceted prismatic reflecting surface corresponding with the collimating surface is provided. Light at a substantially horizontal angle relative to the horizon is emitted through the interior refractive surface through the exterior reflective surface to a side direction and light at a substantially vertical angle relative to the horizon is collimated by the collimating surface and reflected by the reflecting surface in the side direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.