Invention Application
- Patent Title: Sunlight Attenuation Visor
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Application No.: US15187769Application Date: 2016-06-20
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Publication No.: US20170363896A1Publication Date: 2017-12-21
- Inventor: Yongwu Yang , Canwen Liu
- Applicant: Yongwu Yang , Canwen Liu
- Main IPC: G02F1/133
- IPC: G02F1/133 ; G02F1/1335 ; G02F1/1368 ; G02F1/137 ; G02F1/1343

Abstract:
A light attenuation apparatus for adjusting the intensity of light transmitted through the apparatus, comprises: a light detector array for measuring light intensity incident on the light attenuation apparatus; and LCD filter panel, comprising: a first polarizer having a polarizing orientation; a second polarizer; a first substrate with a plurality of electrodes, a second substrate having a plurality of electrodes perpendicular to the first substrate. The first and second substrates disposed between the polarizers. An LCD filter grid has nematic liquid crystals inside the grid to form a plurality of pixels. Each pixel comprises a filter and the LCD filter grid is disposed between the substrates with a plurality of electrodes. A voltage driver controls the voltage level applied to the electrodes based on the intensity of the measured light wherein the voltage determines the amount of light transmitted through the apparatus. Each pixel is independently addressed by the voltage driver.
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