Electronic ink dimming mirror
US6014247A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 5, 1998 |
| Grant date | Jan 11, 2000 |
| Priority date | — |
| Expiry date | Jun 5, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/02
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention provides a self-dimming mirror for a vehicle. The mirror includes a layer of microspheres which contain microparticles and a dielectric liquid. The microparticles have an electrical charge and move between a dispersed state and a segregated state in response to the polarity of an electrical charge on an adjacent electrode. In a first embodiment, the microparticles are reflective and their reflectivity of an incidence light is determined by whether the microparticles are in the dispersed state or the segregated state. In a second embodiment, microparticles include a pigment layer and the transmissivity of an incidence light through the microsphere is determined by whether the microparticles are in a dispersed state or a segregated state. Thus, the present invention provides an electronic dimming mechanism for a mirror.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.