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Microprocessor based automatically dimmable eye protection device with interruption prevention

  • US 20050253057A1
  • Filed: 05/05/2005
  • Published: 11/17/2005
  • Est. Priority Date: 05/05/2001
  • Status: Active Grant
First Claim
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1. An auto darkening eye protection device comprising:

  • a shutter assembly adjustable between a clear state and a dark state;

    a control circuit for controlling the shutter assembly; and

    a protective casing disposed generally about at least a portion of the control circuit to substantially prevent electromagnetic fields from interfering with the operation of the control circuit.

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