Lens coating to reduce external fogging of scope lenses
US6542302B2 · kind B2 · utility
9Cited by
21References
76Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 24, 2001 |
| Grant date | Apr 1, 2003 |
| Priority date | — |
| Expiry date | Sep 24, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/0006
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A coated lens for use in a riflescope, telescope, spotting scope, binoculars, or the like is provided. The coating on the lens comprises two layers, an anti-reflective layer adjacent the lens and a hydrophobic layer disposed on the anti-reflective layer. The hydrophobic layer preferably includes an organosilane compound. Advantageously, the coating does not significantly reduce light transmission through the lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.