Recessed reflector-type light
US5957565A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 5, 1997 |
| Grant date | Sep 28, 1999 |
| Priority date | — |
| Expiry date | Feb 5, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21V11/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A reflector light has a reflector having a reflective inner surface having an edge defining a ceiling plane and substantially symmetrical to a symmetry plane perpendicular to the ceiling plane and a rear-end compartment bisected by the symmetry plane and remote from the ceiling plane. A lamp or primary light source is provided in the compartment on the symmetry plane. An at least partially light-passing diffuser separate from the reflector and spaced toward the surface from the lamp is substantially symmetrical to the symmetry plane and has a light-emitting flat outer surface directed toward the ceiling plane. The surfaces are shaped such that light emitted by the diffuser surface is reflected by the reflector surface outward in a space symmetrical to the symmetry plane and defined by a family of lines tangenting the reflector edge and traversing the symmetry plane. The diffuser surface lies between the family of lines and the lamp.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.