HEAT RADIATION UNIT AND EXPOSURE APPARATUS

摘要

PURPOSE: A heat radiating unit and an exposure apparatus are provided to prevent one or more parts of a heat radiating plate from dropping by supporting the light receiving surface of the heat radiating plate using a plate. CONSTITUTION: A heat sink radiates heat which is generated by light from light source. A heat radiating plate(34A) is adjacently arranged to the light source and is composed of ceramics. A heat radiating unit(30A) includes a supporting unit to support the heat radiating pate on the heat sink. A plate supports the light receiving surface of the heat radiating plate and receives the light and transmits the light.