Refractive index modulation device and method of refractive index modulation
US5739948A · kind A · utility
13Cited by
2References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 8, 1996 |
| Grant date | Apr 14, 1998 |
| Priority date | — |
| Expiry date | Oct 8, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/0147
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A refractive index modulation element made of a refractive index modulation material. The refractive index can be thermally modulated. The refractive index modulation material can be a silicone resin represented by the following formula R.sub.n SiO.sub.(4--n)/2,where the average value of n is 0.5 to 3 and where K is an aliphatic or aromatic group with 1 to 18 carbon atoms or other functional group. The silicone resin has a spectral transmission factor that on average is higher than 80%, within the wavelength range of 350 nm to 1,600 nm, and a refractive index temperature dependence of -0.001/.degree.C. to -0.00005/.degree.C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.