Light-collimating film
US5204160A · kind A · utility
102Cited by
17References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 28, 1991 |
| Grant date | Apr 20, 1993 |
| Priority date | — |
| Expiry date | May 28, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A plastic film has a series of grooves the interiors of which are rendered light absorbing to form a light-collimating film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.