Auto Sun Visor

Discussion in 'Automotive Electronics' started by tonyt, Aug 29, 2015.

  1. tonyt

    Thread Starter New Member

    Jan 15, 2012
    2
    0
    I have an idea for a sun visor that only blocks the area of the visor where the sun is located so that the rest of the visor area would allow visibility. Would this be useful?
     
  2. crutschow

    Expert

    Mar 14, 2008
    12,991
    3,227
    Perhaps, but how would you locate where the sun is in relation to the drivers eyes, which is what you need to do?
     
  3. tonyt

    Thread Starter New Member

    Jan 15, 2012
    2
    0
    I was thinking of an array of phototransistors which have a directional response characteristic so that the one pointed most directly at the sun would have the greatest response. These phototransistors would correspond to a similar array of smart film segments on the sun visor, and the transistor receiving the maximum brightness would make the corresponding smart film segment opaque. The trick as you indicated is how to calibrate the transistor array to match the position of the driver's eyes!
     
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