Patent ID: 9163985
Filing Date: 2015-10-20
Classification: G01J

Abstract:
1. A spectral characteristic measurement apparatus, comprising: a spectrometer for spatially dispersing incident light depending on wavelengths, a detection portion for receiving light dispersed by the spectrometer, the detection portion including a first detection area on which a component in a first wavelength range is incident and a second detection area on which a component in a second wavelength range on a longer wavelength side of the first wavelength range is incident; a filter arranged in a stage preceding the spectrometer, for cutting off the first wavelength range; a storage portion for storing a stray light pattern representing stray light that will be detected by the detection portion, the stray light pattern corresponding to a result of detection in the detection portion, of reference light having intensity in a partial wavelength range on a longer wavelength side in the second wavelength range; and a correction portion configured to correct stray light detected by the detection portion caused by measured incident light, wherein the correction portion is adapted to: