Light source apparatus and an image display apparatus

An image display device comprising:

• a light source apparatus comprising:
• a light emitting tube having a first electrode in a first end thereof and a second electrode in a second end thereof;
• a concave-shaped reflector having a bore in a vertex portion thereof, the bore supporting said light emitting tube so that the first end is inserted therethrough and the second end is directed toward a front opening portion of said concave-shaped reflector;
• a transparent glass plate covering the front opening portion of said concave-shaped reflector;
• a lead wire of which one end connects to said second electrode and of which the other end extends out through a hole formed on a curved slope or a side surface of said concave-shaped reflector;
• a cooling fan blowing cooling air toward a side portion of said concave-shaped reflector;
• and an air guiding member that separates the cooling air originating from said cooling fan into a first, a second, and a third cooling air, the first cooling air cooling an outer surface of said concave-shaped reflector, the second cooling air cooling the other end of said lead wire extending out from said concave-shaped reflector, and the third cooling air cooling said transparent glass plate, the light source apparatus further comprising:
• an ultraviolet and infrared reflection filter upon which light is incident, the light having been reflected by said concave-shaped reflector and passing through said transparent glass plate, and
• a spatial light modulator device adopted to modulate light illuminated thereon, and an imaging optics adopted to guide the light modulated by said spatial light modulator device so as to focus into an image,
• wherein said reflection filter has an infrared reflecting film on one surface thereof and an ultraviolet reflecting film on the other surface thereof, and
• wherein said reflection filter is disposed so that the surface having the infrared reflecting film thereon faces toward said transparent glass plate.