Lithium tantalate monocrystal, monocrystal substrate, and photo element
US5359452A · kind A · utility
19Cited by
10References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 16, 1993 |
| Grant date | Oct 25, 1994 |
| Priority date | — |
| Expiry date | Apr 16, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/0018
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
0.1% or more of Mg by weight is added to lithium tantalate monocrystal materials wherein the amount of Fe is restricted to 10 ppm by weight or less to improve light transmittance in the short wavelength range of blue light and to shift the fundamental absorption edge to the shorter wavelength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.