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Light source device

  • US 3,986,018 A
  • Filed: 10/15/1975
  • Issued: 10/12/1976
  • Est. Priority Date: 10/15/1974
  • Status: Expired due to Term
First Claim
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1. A light source device comprising an elongated box-shaped housing, a cooling means provided on the back wall of said house, a gutter-shaped reflex mirror having a slit at its bottom and a tubular elongated light source arranged within and along the longitudinal direction of said housing, wherein said light source has an electrical input power more than 90 watt per 1 cm of arc and the distance between a slit and a bulb wall portion 3b of said light source on the downstream side of a cooling flow is within one-third of the outer diameter of said light source.

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