Transparent light scattering body, reflective transparent screen comprising same, and video image projection system comprising same
US10641933B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 12, 2017 |
| Grant date | May 5, 2020 |
| Priority date | — |
| Expiry date | Apr 12, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D125/06
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A transparent light scattering body according to the present invention is characterized in that it comprises a transparent binder and metallic microparticles, wherein the regular reflectance R of the metallic material of the metallic microparticles is 50% or more in the measured wave length of 550 nm, and the absolute value of the difference between the regular reflectance R in the measured wave length of 450 nm and the regular reflectance R in the measured wave length of 650 nm is within 25% of the regular reflectance R in the measured wave length of 550 nm, and the average particle size of the secondary particles of the metallic microparticles in the transparent light scattering body is from 100 nm to 2000 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.