Lamphouse and module for photographic slide projectors

A high-intensity lamp module, comprising:

• an elongated high-intensity lamp having a central illumination portion and a pair of oppositely-disposed terminal portions thereon;
• a housing surrounding said lamp, said housing having two opposed ends, one of which includes means for mounting said elongated lamp by one of said terminal portions and the other of which includes means for mounting a light-transmitting window;
• a light-transmitting window mounted in said other end of said housing;
• a reflector mounted within said housing for reflecting light from said high-intensity lamp out of said housing through said light-transmitting window, said reflector surrounding said lamp but being spaced therefrom to permit cooling fluid within said housing to pass between said lamp and said reflector;
• a first opening in said housing adjacent the inner face of said light-transmitting window and serving as a port of egress for cooling fluid introduced into said housing;
• a second opening in said housing adjacent the inner face of said light-transmitting window at a position substantially opposite to that of said first opening and serving as a port of ingress for cooling fluid introduced into said housing, the flow of cooling fluid from said second opening to said first opening being substantially adjacent such inner face of said window and including the adjacent one of said lamp terminal portions;
• and
• a third opening in said housing substantially adjacent the end of said housing serving as a mounting means for said lamp, the flow of cooling fluid from said third opening to said first opening passing between said reflector and said lamp in direct contact with the latter;
• whereby two separate and distinct paths of flow are provided for cooling fluid introduced into said housing, the two paths becoming one at the point of egress at said first opening in said housing.