Lighting film, window glass, roll screen, and lighting louver
US9803818B2 · kind B2 · utility
4Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 5, 2014 |
| Grant date | Oct 31, 2017 |
| Priority date | — |
| Expiry date | Jun 5, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2207/123
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A lighting film which includes a base member having optical transparency, a plurality of protrusions having optical transparency, which are formed to be adjacent to each other on one surface of the base member, and a gap portion formed between the protrusions, in which an area of an end surface of the protrusion on a base member side is greater than an area of an end surface of the protrusion on a side opposite to the base member, and a ratio s/w of an interval s of two adjacent protrusions among the plurality of protrusions to a width w of the protrusion is equal to or less than 0.1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.