Light system

A light system comprising:

• a light source;
• a reflector having first and second focal spots, the light source being situated at the first focal spot, the reflector being configured for concentrating light from the light source to the second focal spot;
• an opaque shield having an aperture therein, the aperture being situated proximate to the second focal spot,
• wherein the reflector comprises a quasi-ellipsoidal portion, wherein the light source is situated within the quasi-ellipsoidal portion, a cylindrical portion situated between the quasi-ellipsoidal portion and the shield for reflecting stray light from the quasi-ellipsoidal portion in the direction of the shield, a back reflector portion situated proximate to the shield, and a centrally-mounted portion situated between the aperture and the light source for directing back-reflected light in the direction of the aperture.

An X-ray localizer light system comprising:

• a halogen lamp;
• a reflector having first and second focal spots, the lamp being situated at the first focal spot, the reflector being configured for concentrating light from the lamp to the second focal spot;
• an opaque shield having an aperture therein, the aperture being situated proximate to the second focal spot and being of such a geometrical shape so as to maximize light throughput while meeting light field edge contrast requirements of the X-ray localizer system;
• and
• a diffuser situated between the lamp and the aperture,
• wherein the halogen lamp comprises an axially positioned filament coil and wherein each dimension of the coil is smaller than a corresponding dimension of the aperture.