Assembly and method for evaluating effectiveness of anti-fog coatings of eyewear lenses
US8365619B2 · kind B2 · utility
1Cited by
9References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 5, 2010 |
| Grant date | Feb 5, 2013 |
| Priority date | — |
| Expiry date | Jul 25, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/59
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An assembly for testing the effectiveness of anti-fog coatings on eyewear lenses, the assembly comprising a chamber for receiving and retaining the eyewear, means for controlling the temperature and relative humidity in the chamber, means for providing warm moist air to the chamber, and a hazemeter for detecting and recording haze values exhibited by the lenses; and a method for evaluating effectiveness of anti-fog coatings on eyewear lenses, utilizing the assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.