Patent ID: 8717557
Filing Date: 2014-05-06
Classification: G01J

Abstract:
1. A spectrophotometer comprising a xenon flash lamp which emits a bundle of light rays by pulse lighting, a spectroscope which spectrally separates the bundle of light rays into arbitrarily-defined wavelengths and irradiates a sample therewith, and a light detector which detects a light intensity of the bundle of light rays allowing to pass through the sample, wherein the spectrophotometer is configured to arrange a low-pressure mercury lamp on a bundle of light rays between the xenon flash lamp and the spectroscope on an as needed basis upon a determination of the spectrophotometer, and has a shutter mechanism that switches between shielding the bundle of light rays emitted from the low-pressure mercury lamp and allowing the bundle of light rays to pass through, and a processing unit determines the performance of the spectrophotometer by detecting each of the light intensities with the light detector at the time when shielding the bundle of light rays and at the time when allowing the bundle of light rays by operating the shutter mechanism.