Optical device and electroytic solution
US6261478A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 4, 1998 |
| Grant date | Jul 17, 2001 |
| Priority date | — |
| Expiry date | Sep 4, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/1506
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A power-saving, highly-reversible optical device is provided. The transmittance through the device is well controlled within a visible ray range. The device has good spectral characteristics while shielded from light, and the electrodes in the device are prevented from being in overpotential condition. The device has a long life, and is protected from being discolored and deteriorated in cycle use. Also, an electrolytic solution to be used in the device is provided. The optical device comprises a solution as so put between working electrodes and a counter electrode that driving control of these electrodes brings about deposition or dissolution of silver. In this, the solution is prepared by dissolving a silver salt in a solvent, to which are added a supporting salt of an alkali metal halide such as LiBr or the like, and an alkanolamine, and optionally coumarin and a mercaptoalkylimidazole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.