Patent ID: 7508503

Claim:
An integrating sphere for measuring an optical property of a light source, the integrating sphere including a main body having a substantially spherical hollow space formed therein, the integrating sphere comprising: a first through-hole and a second through-hole formed in the main body, the first through-hole being provided such that a wire for supplying electric power to the light source installed inside the hollow space passes therethrough, the second through-hole being provided such that temperature-controlled air is supplied into the hollow space of the main body therethrough; a light source support having one end disposed at the center of the hollow space of the main body and the other end fixed to an inner peripheral surface so as to hermetically seal the first through-hole of the main body, the light source support having a hollow through which a wire passes from the exterior of the main body to the one end of the light source support via the first through-hole; an air supply tube for supplying air to the interior of the main body through the second through-hole, the air supply tube being fixed to an outer peripheral surface of the main body where the second through-hole is formed; an air supply means for supplying air to the air supply tube; a temperature control means for controlling the temperature of air being supplied from the air supply means and passing through the air supply tube, the temperature control means being installed inside the air supply tube; and a shielding plate installed to be spaced apart by a predetermined distance from the second through-hole.