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Light source apparatus, its manufacturing method and apparatus, reflector focal position-locating method and apparatus, focal position-locating light source, discharge lamp emission position-locating method and apparatus, and discharge lamp-reflector positioning method and apparatus

  • US 7,145,665 B2
  • Filed: 01/10/2002
  • Issued: 12/05/2006
  • Est. Priority Date: 01/11/2001
  • Status: Expired due to Fees
First Claim
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1. An emission position-detecting method of a discharge lamp lightened by a discharge generated between a pair of opposing electrodes, comprising:

  • obtaining the imaging information on said pair of electrodes;

    detecting the shortest path coupling between said pair of electrodes based on this imaging information; and

    detecting a center point of this shortest path as an emission position of said discharge lamp.

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