Patent ID: 8651701
Filing Date: 2014-02-18
Classification: H01J

Abstract:
1. A light source device, comprising: an ellipsoidal reflector with an opening therein, a discharge vessel having an emission substance enclosed therein, the discharge vessel being arranged at a focal point of the ellipsoidal reflector and extending into said opening of the ellipsoidal reflector, a laser for generating a laser beam, means for converging the laser beam toward an opening side of the ellipsoidal reflector for irradiating and exciting the emission substance for causing light to be emitted from the discharge vessel; and a planar mirror positioned to receive emitted light reflected by the ellipsoidal reflector and for changing the direction of the reflected light, wherein the planar mirror comprises a window in an area and of a size such that straight lines extending from edges of the window to edges of the opening of the ellipsoidal reflector are tangential to points on an external surface of the discharge vessel at a maximum diameter thereof; and wherein the laser is arranged to cause the laser beam to pass through said opening and said window.