| 摘要 |
<p>An electronically controlled visor (10) that includes a panel (20) composed of a number of liquid crystal pixels (22) that act as shutters to attenuate offending light sources. Pixels (22) are driven by electronic control unit (40) that in turn is driven by light sensor assemblies (60) that detect the angle of incidence of the offending radiation. A correlation exists between the elements of the light sensor assemblies (60) that are activated and the pixels (22) that end up being energized, changing their opacity, as a result of detecting the offending light source so that the latter can be attenuated. A bias adjustment control circuit adjusts the level of light that is to be considered offending (damaging or distracting to a user). Sections (24) of the panel (20) comprising several pixels (22) can be activated together or in non-contiguous patterns in order to optimize the effectiveness of the attenuation with a minimum of peripheral unneeded attenuation of neighboring pixels.</p> |
