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Threating device

  • US 20030174504A1
  • Filed: 10/17/2002
  • Published: 09/18/2003
  • Est. Priority Date: 04/21/2000
  • Status: Active Grant
First Claim
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1. The frightening apparatus comprising:

  • a bulk-shaped lens; and

    a semiconductor light-emitting element installed in a well-shaped cavity formed at backside of the bulk-shaped lens, wherein outer diameter of contour surface of the bulk-shaped lens is larger than three times and smaller than ten times of inner diameter of the cavity.

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