Apparatus and method for controlling the temperature of a black body

An apparatus for controlling temperature of a black body, comprising:

• a black body emitting radiant energy of infrared rays;
• a first Peltier element adjacent to the black body, the first Peltier element having a 1a surface and a 1b surface that selectively emit or absorb heat;
• a copper plate adjacent to the 1b surface;
• a second Peltier element adjacent to the 2b surface, the second Peltier element having a 2a surface and a 2b surface that selectively emit or absorb heat;
• a heat transfer member comprising a bent surface adjacent to the 2a surface, and an arm extending toward both ends of the black body to be adjacent to the both ends of the black body;
• and
• a control unit controlling the 2a surface to emit heat simultaneously when the 1a surface emits heat, and the 2a surface to absorb heat simultaneously when the 1a surface absorbs heat,
• wherein the second Peltier element has a through hole at the center thereof, and the apparatus further comprises a heat-emitting member contacting the copper plate to exhaust heat generated in the copper plate.