Method and apparatus for demonstrating optical properties of lenses for spectacle glasses
US10600338B2 · kind B2 · utility
0Cited by
2References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 10, 2018 |
| Grant date | Mar 24, 2020 |
| Priority date | — |
| Expiry date | Aug 17, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C7/102
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method and an apparatus for demonstrating optical properties of a lens for spectacle glasses are disclosed. A demonstrational tool exposes a spectacle lens or a pair of spectacle glasses to polarized light to demonstrate how the removal of polarized, reflected light from a display reduces glare. Further, the demonstrational tool exposes a phototrope lens or a pair of spectacle glasses with phototrope lenses to UV- or HEV-light to demonstrate the reversible self-tinting of the phototrope lenses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.