Patent ID: 8373844
Filing Date: 2013-02-12
Classification: G03F

Abstract:
1. An exposure apparatus having an element to be cooled and being configured to expose a substrate to patterned radiation by using the element, said apparatus comprising: a reservoir configured to house a liquid coolant therein; a jacket configured to cool the element; a first pump disposed downstream of said reservoir and upstream of said jacket with respect to a flow direction of the liquid coolant, and being configured to supply the coolant from said reservoir to said jacket; a heater disposed between said first pump and said jacket, and being configured to heat the coolant supplied from said first pump; a second pump disposed downstream of said jacket and upstream of said reservoir with respect to the flow direction, and being configured to reduce a pressure of said jacket, and to supply the coolant from said jacket to said reservoir; and a cooler disposed between said second pump and said reservoir, and being configured to cool the coolant supplied from said second pump.