Goggle having a tinted plastic lens
US6138286A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Apr 14, 1999 |
| Grant date | Oct 31, 2000 |
| Priority date | — |
| Expiry date | Apr 14, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C7/104
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A goggle has a replaceable plastic lens mounted in a flexible frame containing several air vents for passing external air through the goggle interior. The lens is formed of thermoplastic materials to provide spherical and cylindrical versions of the lens. The thermoplastic resins incorporate dyes which tint the lens to create transmission curves having peaks and valleys which approximate or enhance certain response characteristics of the retina of the human eye. Inlet air vents are covered by porous foam located in an upper air channel to disperse downwardly the external air into the interior space behind the lens. Outlet vents located in the bottom of the frame are covered with a porous foam to exit air from the interior space.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.