Half a croissant, on a plate, with a sign in front of it saying '50c'
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Automatic Sun Visor

Computer positions visor to block sun glare from driver's eyes.
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Once set with the location of the driver's eyes the system would interpose a relatively small sun blocker between the sun and the eyes. The position of the sun could be detected by a relatively simple electro-optical device. A computer would then derive the position required for the sun blocker and move it as required. This could be done using geometry or it could be done by having perhaps a thousand possible positions of the sun and twenty or so positions for the driver's eyes allowing a table lookup for each sun block position..
hangingchad, Nov 09 2004

Someone posted this before http://www.halfbakery.com/idea/Sun_20Spot
But, as waugsqueke notes on this related idea, it seems to have gone away. [DrCurry, Nov 09 2004]

They're always looking for interesting ideas to brainstorm... http://www.irvinaut...ve.com/products.htm
[RayfordSteele, Nov 12 2004]

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       I *almost* questioned the need for this idea, before I remembered where I was. Phew, that was a close one [+].
DocBrown, Nov 09 2004
  

       Interesting. In one of my former lives I was a sunvisor engineer at the following link.
RayfordSteele, Nov 12 2004
  

       [tahuyahick] I suppose the sun-sensor could be used to "see" oncoming headlights. On the other hand, there is such a magnatude of difference in brightness between sunlight and a headlight that two different detectors might have to be used. There was some kind of "magic-eye" headlight dimmer accessory on the market some years back. I never had one and I haven't seen it advertised in years.
hangingchad, Nov 13 2004
  


 

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