What is the real definition of lamp life, and what makes it important to me?
This is one specification you cannot afford to misunderstand. Rated lamp life is computed on the point at which 50% of all lamps in a lot have failed. So, if your rated lamp life is 10,000 hours, ONE HALF of all the lamps may have failed at that point. Now if you’re basing your “free replacement” policy for failed lamps on the 10,000 hours rated life, you’ll be absorbing the cost on AT LEAST 50% of all the lamps installed in your products. PLEASE don’t let sometimes misleading specifications lead you into a sense of false security. An appropriate formula for first failure is 35% of rated lamp life.products. PLEASE don’t let sometimes misleading specifications lead you into a sense of false security.
