Electronic ink dimming mirror

Details Electronic ink dimming mirror Electronic ink dimming mirror

1998-06-05

2000-01-11

Epps, Georgia

Optical: systems and elements

Optical modulator

Light wave temporal modulation

359253, 359604, G02B 106

Patent

active

060142472

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.

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patent: 5650872 (1997-07-01), Saxe et al.
patent: 5691849 (1997-11-01), Ledroit et al.
patent: 5838482 (1998-11-01), Decroupet et al.

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