Polarization preserving projection screen with engineered particle and method for making same
US8659828B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 4, 2012 |
| Grant date | Feb 25, 2014 |
| Priority date | — |
| Expiry date | Aug 24, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1052
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Polarization preserving projection screens provide optimum polarization preservation for 3D viewing. The projection screens additionally provide improved light control for enhanced brightness, uniformity, and contrast for both 2D and 3D systems. Generally, the disclosed method for providing a projection screen comprises embossing at least a first side of a first substrate to produce an optically functional material and then cutting the optically functional material into pieces to produce a plurality of engineered particles. The plurality of engineered particles may then be deposited on a second substrate to produce a substantially homogeneous optical appearance of the projection screen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.