Light reflecting plate
US5844731A · kind A · utility
24Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 18, 1997 |
| Grant date | Dec 1, 1998 |
| Priority date | — |
| Expiry date | Feb 18, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31786
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A light reflecting plate includes a thermoplastic polyester foam containing fine cells with a mean cell diameter of 50 .mu.m or less and having a thickness of 200 .mu.m or more and a specific gravity of 0.7 or less. This light reflecting plate exhibits a high diffuse reflectance of visible light without adding a pigment or fine particles for improving the light scattering properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.