In a light diffuser, a strong light diffusion processing is performed to a lamp corresponding part located in a vertical immediate downward direction of each of a plurality of flash lamps, and a weak light diffusion processing is performed to an inter-lamp corresponding part located between lamp corresponding...http://www.google.es/patents/US6856762?utm_source=gb-gplus-sharePatente US6856762 - Light irradiation type thermal processing apparatus
Light irradiation type thermal processing apparatus
