Multi-directional light control film
US5147716A · kind A · utility
41Cited by
25References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 16, 1989 |
| Grant date | Sep 15, 1992 |
| Priority date | — |
| Expiry date | Jun 16, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/258
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A light control film includes a light transmissive matrix sheet and a plurality of opaque aciculae disposed throughout the sheet and oriented such that the longitudinal axis of each of the acicula is generally perpendicular to the face of the sheet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.