Glare reduction system
First Claim
1. A glare reduction panel adapted to be used with a liquid crystal based display device that is configured to receive a first input voltage signal so as to generate a light signal associated with the first input voltage signal and to transmit the light signal through a first liquid crystal layer and subsequently through a second polarizer of the liquid crystal based display device, the glare reduction panel including:
- a second liquid crystal layer comprising a plurality of liquid crystals, the second liquid crystal layer being configured to receive the light signal from the second polarizer and to receive a second input voltage signal same as the first input voltage signal, so as to excite a set of liquid crystals of the plurality of liquid crystals to adjust a polarization associated with the light signal received by the set of the liquid crystals of the plurality of liquid crystals; and
an end polarizer configured to receive the light signal from the second liquid crystal layer, the end polarizer having an axis of transmission relative to an axis of transmission of the second polarizer of the display device;
wherein the second liquid crystal layer and the end polarizer are situated to opacify the light signal, received by the set of liquid crystals of the plurality of liquid crystals, by continuing a polarization rotation of the light signal as received by the second liquid crystal layer, based on the second input voltage signal so as to rotate the polarization outside of a 0 to 90 degree range associated with the liquid crystal based display device,wherein the first voltage signal and the second voltage signal are generated and applied to the first crystal layer and the second crystal layer by a sensor when an intensity of light incident on the sensor is greater than a threshold value.
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Abstract
A glare reduction system is provided for glare reduction. The glare reduction system includes an imaging source configured to receive light from an object, and a display driver configured to process the received light to generate an input signal. The glare reduction system further includes a display device configured to receive the input signal. A glare reduction panel is positioned anteriorly to the display device. The glare reduction panel including a liquid crystal layer configured to receive the input signal and an end polarizer with an axis of transmission relative to an angle of transmission of a second polarizer of the display device.
49 Citations
15 Claims
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1. A glare reduction panel adapted to be used with a liquid crystal based display device that is configured to receive a first input voltage signal so as to generate a light signal associated with the first input voltage signal and to transmit the light signal through a first liquid crystal layer and subsequently through a second polarizer of the liquid crystal based display device, the glare reduction panel including:
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a second liquid crystal layer comprising a plurality of liquid crystals, the second liquid crystal layer being configured to receive the light signal from the second polarizer and to receive a second input voltage signal same as the first input voltage signal, so as to excite a set of liquid crystals of the plurality of liquid crystals to adjust a polarization associated with the light signal received by the set of the liquid crystals of the plurality of liquid crystals; and an end polarizer configured to receive the light signal from the second liquid crystal layer, the end polarizer having an axis of transmission relative to an axis of transmission of the second polarizer of the display device; wherein the second liquid crystal layer and the end polarizer are situated to opacify the light signal, received by the set of liquid crystals of the plurality of liquid crystals, by continuing a polarization rotation of the light signal as received by the second liquid crystal layer, based on the second input voltage signal so as to rotate the polarization outside of a 0 to 90 degree range associated with the liquid crystal based display device, wherein the first voltage signal and the second voltage signal are generated and applied to the first crystal layer and the second crystal layer by a sensor when an intensity of light incident on the sensor is greater than a threshold value. - View Dependent Claims (2, 3, 4)
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5. A glare reduction system, comprising:
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an imaging source configured to receive light from an object; a display driver configured to process the received light to generate an input voltage signal when an intensity of light received from the object is greater than a threshold value; a display device configured to receive the input voltage signal and to produce an image corresponding to the light received from the object, wherein the display device comprises; a first liquid crystal layer configured to receive linearly polarized light and to selectively rotate the linear polarization of the light within a range of 0 to 90 degrees based on the input voltage signal and the threshold value, a second polarizer positioned anteriorly to the first liquid crystal layer, wherein the second polarizer has a predetermined polarization angle with respect to the linear polarization of the light received by the first liquid crystal layer; and a glare reduction panel positioned anteriorly to the display device so as to receive the image generated by the display device, the glare reduction panel including; a second liquid crystal layer comprising a plurality of liquid crystals, the second liquid crystal layer being positioned adjacent to the second polarizer such that the second polarizer is interposed between the first liquid crystal layer and the second liquid crystal layer and that is configured to continue the selective polarization rotation of the light of the image, received by a set of liquid crystals of the plurality of liquid crystals, outside the 0 to 90 degree range by selectively exciting the set of liquid crystals of the plurality of liquid crystals based on the input voltage signal, wherein the same input voltage signal applied to the first liquid crystal layer and the second liquid crystal layer; and an end polarizer having an axis of transmission relative to an axis of transmission of the second polarizer of the display device so as to receive the image from the second liquid crystal layer, wherein the end polarizer opacifies the light received from the set of liquid crystals of the plurality of liquid crystals. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12)
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13. A method of glare reduction using a display apparatus having a liquid crystal based display device and a glare reduction panel, the method comprising:
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generating an input voltage signal corresponding to an object when an intensity of light received from the object is greater than a threshold value; receiving the input voltage signal in the display device; selectively rotating a linear polarization of light in the display device in a first direction, within a range of 0 to 90 degrees, in order to generate a transient image corresponding to the input voltage signal that has a glare associated with optical intensities above a level associated with the threshold value; receiving the input voltage signal in the glare reduction panel positioned anteriorly to the display device separately from the receiving of the input voltage signal by the display device, wherein the glare reduction panel receives the light corresponding to the transient image from the display device, wherein the glare reduction panel includes a liquid crystal layer comprising a plurality of liquid crystals and is configured to receive the input voltage signal, wherein the glare reduction panel further includes an end polarizer having an axis of transmission relative to an axis of transmission of a second polarizer of the display device; and continuing the selective rotation of the linear polarization of the light of the transient image, received by a set of liquid crystals of the plurality of liquid crystals, in the first direction, outside the 0 to 90 degree range, by selectively exciting a set of liquid crystals of the plurality of liquid crystals based on the input voltage signal and threshold value in order to opacify the light received by the set of liquid crystals of the plurality of liquid crystals and to produce an end image having a glare reduced in relation to the transient image. - View Dependent Claims (14, 15)
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Specification