Selective light attenuation system
First Claim
1. A system for selectively attenuating light from a source of light to a person'"'"'s eyes in a vehicle, comprising:
- an electro-optical element interposed between the source of light and the person'"'"'s eyes, the element having pixels that are operable to individually attenuate light passing therethrough;
a navigation system operable to determine navigational information of the vehicle including a location and direction of travel of the vehicle;
a memory that contains pre-stored general location for the person'"'"'s eyes within the vehicle;
information for determining a position of the source of light; and
a controller coupled to the element, navigation system, and memory, the controller operable to determine those pixels of the element that are calculated to be between the person'"'"'s eyes and the source of light, and to reduce the light transmittivity of those pixels to attenuate the light from the source to the person'"'"'s eyes.
3 Assignments
0 Petitions
Accused Products
Abstract
A system for selectively attenuating light from a source of light, such as the sun, to a person'"'"'s eyes in a vehicle. The system includes an electro-optical element (10) interposed between the source of light (16) and the person'"'"'s eyes (14). The element (10) has pixels (18) that are operable to individually attenuate (38) light passing therethrough. A navigation system (28) determines a location and direction of travel of the vehicle. A memory (24) contains a general location for the person'"'"'s eyes within the vehicle. Information (32) is made available for determining a position of the source of light. A controller (24) operates to determine those pixels of the elements that are calculated (38) to be between the person'"'"'s eyes and the source of light, and to reduce the light transmittivity of those pixels (38) to attenuate the light from the source (16) to the person'"'"'s eyes (14).
52 Citations
20 Claims
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1. A system for selectively attenuating light from a source of light to a person'"'"'s eyes in a vehicle, comprising:
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an electro-optical element interposed between the source of light and the person'"'"'s eyes, the element having pixels that are operable to individually attenuate light passing therethrough;
a navigation system operable to determine navigational information of the vehicle including a location and direction of travel of the vehicle;
a memory that contains pre-stored general location for the person'"'"'s eyes within the vehicle;
information for determining a position of the source of light; and
a controller coupled to the element, navigation system, and memory, the controller operable to determine those pixels of the element that are calculated to be between the person'"'"'s eyes and the source of light, and to reduce the light transmittivity of those pixels to attenuate the light from the source to the person'"'"'s eyes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 12)
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8. A system for selectively attenuating light from the sun to a person'"'"'s eyes in a vehicle, comprising:
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an electro-optical element disposed on at least a windshield of the vehicle, the element having pixels that are operable to individually attenuate light passing therethrough;
a navigation system operable to determine navigational information of the vehicle including a location and direction of travel of the vehicle;
a memory that contains a pre-stored general location for the person'"'"'s eyes within the vehicle;
ephemeris information for the sun; and
a controller coupled to the element, navigation system, and database, the controller operable to determine those pixels of the elements that are calculated to be between the person'"'"'s eyes and the sun for the given time of day, ephemeris of the sun, and navigational information of the vehicle, those pixels are then selected for reducing their light transmittivity to attenuate the light from the sun to the person'"'"'s eyes. - View Dependent Claims (9, 10, 11, 13, 14, 15, 16)
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17. A method for selectively attenuating light from the sun to a person'"'"'s eyes in a vehicle, comprising:
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disposing an electro-optical element on at least a windshield of the vehicle, the element having pixels that are operable to individually attenuate light passing therethrough;
acquiring a general location for the person'"'"'s eyes within the vehicle and ephemeris information for the sun;
determining navigational information of the vehicle including a location and direction of travel of the vehicle;
calculating those pixels of the elements that are between the person'"'"'s eyes and the sun for a given time of day, ephemeris of the sun, and navigational information of the vehicle; and
attenuating the light transmittivity of those pixels from the calculating step to reduce the light from the sun to the person'"'"'s eyes. - View Dependent Claims (18, 19, 20)
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Specification