Projection-receiving surface that functions in ambient light
US7239445B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 7, 2004 |
| Grant date | Jul 3, 2007 |
| Priority date | — |
| Expiry date | Oct 7, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/602
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention is a broadband projection-receiving surface that can function as a projection screen. This surface can, even in strong ambient light, provide high gain, prevent glare and speckle, provide high contrast, preserve of gray-scale linearity, provide a uniformity of brightness, provide rapid angular cut-off, preserve polarization, and provide the ability to function over a large spectral range. These achievements result from a production method that utilizes purposeful partitioning of the material processes used in sub-wavelength morphology (finish) from the processes used to make super-wavelength morphology (figure).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.