Luminaire with lens having a holographic three-dimensional patterned layer
US11906154B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 20, 2021 |
| Grant date | Feb 20, 2024 |
| Priority date | — |
| Expiry date | Jul 20, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F2013/189
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A luminaire includes a housing (102) with an inner cavity a light source (122) mounted to an inner top surface of the housing. The luminaire also includes a door frame (104), wherein the door frame includes a first side rail (108), a second side rail (109), a third side rail (107), and a fourth side rail (110). The four side rails of the door frame define a light emitting opening for the luminaire. A film stack (116) is supported by the door frame and placed in the light emitting opening so that light from the light source passes through the film stack as it is emitted through the light emitting opening. The film stack (116) includes a diffuser film (129) and a photopolymer film (127). The photopolymer film (127) is embossed with optical structures that create a holographic pattern that appears to be three-dimensional.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.