Patent ID: 8334977

Claim:
An evaluation device comprising: an illumination unit configured to radiate linearly polarized light to a surface of a substrate having a predetermined repeating pattern which is formed through exposure by an exposure device; an analyzer configured to extract a polarization component having a different direction of vibration than the linearly polarized light from among regularly reflected light from the repeating pattern irradiated by the linearly polarized light; an imaging unit configured to capture a regularly reflected image of the substrate based on the polarization component extracted by the analyzer; a setting unit configured to set an angle condition between the direction of vibration of the linearly polarized light and the direction of vibration of the polarization component, or between the direction of vibration of the linearly polarized light and the direction of repetition of the repeating pattern; and an evaluation unit configured to evaluate at least one of an exposure amount and a focus state of the exposure device on the basis of an image of the regularly reflected image captured by the imaging unit; the imaging unit being configured so as to capture the regularly reflected image obtained in a plurality of angle conditions between the direction of vibration of the linearly polarized light and the direction of vibration of the polarization component, or a plurality of angle conditions between the direction of vibration of the linearly polarized light and the direction of repetition of the repeating pattern, the angle conditions being set by the setting unit; and the evaluation unit being configured so as to evaluate at least one of the exposure amount and the focus state of the exposure device which is used to form the repeating pattern on the basis of images of the plurality of regularly reflected images captured by the imaging unit.