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Method of and cassette structure for burn-in and life testing of multiple LEDs and the like

  • US 6,597,195 B1
  • Filed: 07/28/2000
  • Issued: 07/22/2003
  • Est. Priority Date: 07/28/2000
  • Status: Expired due to Fees
First Claim
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1. A method of holding multiple LEDs for burn-in and optical and electrical life testing measurements, that comprises, providing a cassette with contacts rated for multiple insertions and adapted to receive a plurality of LEDs with leads thereof plugged therein;

  • inserting said cassette holding the plurality of LEDs into a fixture board and electrically energizing the LEDs within the cassette to light all the LEDs simultaneously for burn-in;

    following said burn-in, thereupon inserting the cassette holding the plurality of LEDs within a light-integrating sphere system and successively lighting each LED individually while conducting optical and electrical life-testing related measurements thereof within the sphere system, and wherein the forward voltage and leakage current is measured for each LED individually at each stage f the testing sequence.

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