Liquid crystal spectacles
US4756605A · kind A · utility
229Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 21, 1986 |
| Grant date | Jul 12, 1988 |
| Priority date | — |
| Expiry date | Jan 21, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/294
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A liquid crystal spectacle includes a pair of liquid crystal lenses and a frame holding the lenses. The frame has a pair of temples and a pair of ear pieces attached individually to the temples. Each ear piece houses a battery for supplying the voltage to the corresponding lens. Each temple houses a regulator circuit for regulating the voltage supplied from the battery to the lens, thereby controlling the refractive index of the lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.