Driving glasses
US6773816B2 · kind B2 · utility
60Cited by
5References
17Claims
0Family size
Assignees
Inventor
Key dates
| Filing date | Dec 31, 2002 |
| Grant date | Aug 10, 2004 |
| Priority date | — |
| Expiry date | Dec 31, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/11
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The invention relates to driving glasses in which a thermic ray reflection layer 2 made of a metal or an organic substance is provided on the outer surface of a glass matrix 1, and an anti-reflection layer 3 is provided on the inner surface thereof, werein the glass matrix 1 contains neodymium oxide Nd2O3 of 1 through 12% by weight and praseodymium oxide Pr6O11 of 0.5 through 8% by weight, and forms an absorption peak of light transmittance at a wavelength of 510 through 540 nm and a wavelength of 570 through 590 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.