Lighting member, lighting device, and method for installing lighting member
US10337682B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2017 |
| Grant date | Jul 2, 2019 |
| Priority date | — |
| Expiry date | Dec 22, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2207/123
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lighting film (1) includes a first base material (2), a plurality of lighting portions (3), and a void portion (9), and if a virtual straight line (F) that passes through a point (C), at which any one light ray of light entering the lighting portion (3) is incident on a reflective surface, and is orthogonal to a first surface (2a) of the first base material (2) marks a boundary between two spaces, a space with the light ray incident on the point (C) of the two spaces is labeled as a first space (S1), and a space without the light ray incident on the point (C) is labeled as a second space (S2), the lighting film (1) has a function of decreasing intensity of light traveling toward the second space (S2) of light emitted from the first base material (2) or the lighting portion (3).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.