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Eyeglass-darkening UV light

UV light for darkening eyeglasses in car
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(+4, -1)
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I wear photochromic eyeglasses (ones that darken in sunlight). They work great outdoors, but the don't work in the car because the car windows filter out the ultraviolet rays that make them darken. I could dangle them out the car window for a while to darken them, but the effect doesn't last very long and its' not very safe because it means driving with one hand and without glasses. It would be useful to have a small ultraviolet light inside the car that would automatically turn on when it is sunny outside to replace the filtered-out UV rays (except the harmful ones, of course) so that the glasses would darken just like outside.
gson, Mar 07 2005

trying to be helpful... http://www.qgm.com/...yrics/paradise.html
[po, Mar 07 2005]

[link]






       Or just invent eyeglasses that darken due to visible light. There's a fortune waiting to be made, I suspect.
DrCurry, Mar 07 2005
  

       You might want to try the Rodenstock ColorMatic Extra, which is designed to darken even behind a windshield.
ldischler, Mar 07 2005
  

       Deep purple dashboard sex lights.
mensmaximus, Mar 07 2005
  

       Dashboard sex?...news to me.
half, Mar 07 2005
  

       I guess that you don't subscribe to "Gymnast Monthly".
mensmaximus, Mar 07 2005
  
      
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