Exposure apparatus, exposure method, method for...

Photocopying – Projection printing and copying cameras – With temperature or foreign particle control

Reexamination Certificate

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C355S053000

Reexamination Certificate

active

07973906

ABSTRACT:
An exposure apparatus has a projection optical system configured to project a pattern of a reticle onto a substrate, and exposes the substrate to light via the reticle and the projection optical system with a space between the projection optical system and the substrate filled with liquid. The apparatus includes a supply nozzle configured to supply liquid to the space, a supply path configured to supply the liquid to the supply nozzle, a bypass which branches from the supply path, and a supply control valve configured to change a flow rate of the liquid supplied from the supply path to the supply nozzle and a flow rate of the liquid supplied from the supply path to the bypass.

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