Patent ID: 8711362
Filing Date: 2014-04-29
Classification: G01J

Abstract:
1. A spectrometer comprising: a first light source which emits first light with no peak wavelength within a wavelength range of visible light and having a light amount increasing as a wavelength of the first light becomes longer within the wavelength range of visible light; a second light source which emits second light having a peak wavelength within the wavelength range of visible light; a light mixer which mixes the first light and the second light into mixed light; a wavelength variable interference filter which receives the mixed light and transmits particular light contained in the mixed light having a particular wavelength; a light receiving unit which receives the particular light transmitted by the wavelength variable interference filter; and a measurement control unit which changes the wavelength of light that can pass through the wavelength variable interference filter and measures spectral characteristics of the particular light having passed through the wavelength variable interference filter based on the particular light received by the light receiving unit.