Patent ID: 7072026

Claim:
An exposure apparatus which comprises a light source emitting pulsed light having a wavelength of 300 nm or less and which exposes an exposure object to light by applying the pulsed light passed through a plurality of optical components, wherein at least one of the plurality of optical components is a synthetic silica glass component; and a thickness of the synthetic silica glass component, an energy density per pulse of pulsed light applied to the synthetic silica glass component, and a pulse width of the pulsed light satisfy the following expression (1): τI −2 L −1.7 ≧0.002(ns·mJ −2 ·cm 2.3 ·pulse 2 ) (1) wherein L is the thickness (unit: cm) of the synthetic silica glass component, I is the energy density (unit: mJ·cm −2 ·pulse −1 ) per pulse of the pulsed light applied to the synthetic silica glass component, and τ is the pulse width (unit: ns) of the pulsed light.