Optical unit for aisle lighting
US6132066A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 1, 1999 |
| Grant date | Oct 17, 2000 |
| Priority date | — |
| Expiry date | Feb 1, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21W2131/405
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An optical unit is provided for use in a suspended aisle luminaire. The optical unit comprises a plurality of metalized reflecting components which are operative to produce a uniform illuminance level along vertical surfaces of an aisle while minimizing glare toward workers in the aisle. Secondly, the optical unit includes a plurality of non-metalized reflecting components which are operative to illuminate the vertical and horizontal surfaces of the aisle. Additionally, the optical unit may further comprise a plurality of refracting components which are operative to illuminate vertical surfaces near the luminaire and reduce dark spots on the vertical surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.