Activity-specific optical filters and eyewear using such filters
US6893127B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 2001 |
| Grant date | May 17, 2005 |
| Priority date | — |
| Expiry date | Feb 2, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C7/104
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Eyewear include lenses having spectral transmittances selected for viewing an object with respect to a background. The spectral transmittances are selected to provide a natural feel to scenes viewed with the eyewear. In one example, a lens for viewing a white golf ball includes an object-contrast spectral window that transmits radiation at wavelengths of about 440 nm, a background window that transmits wavelengths at about 550 nm, and a spectral-width window that transmits wavelengths between about 620 nm and 700 nm. Similar eyewear can be configured for other activities. Methods for selecting filters and lenses for such eyewear are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.