| 摘要 |
PROBLEM TO BE SOLVED: To provide a spectrometric apparatus that can carry out accurate spectrometric processing, and an image forming apparatus.SOLUTION: A printer comprises: a light source; an integrator optical system that irradiates a predetermined irradiation range of a medium A with illumination light from the light source; a spectral device that includes a wavelength variable interference filter on which light from a measurement object is made incident; and a spectroscope that includes a light receiving part that receives light emitted from the spectral device. The integrator optical system includes a reference measurement range Rwhen the distance between the medium A and the spectroscope becomes reference distance and irradiates, with the illumination light, an irradiation range that is larger than the reference measurement range Rby at least a permissible variation H of the distance between the medium A and the spectroscope or more.SELECTED DRAWING: Figure 6 |
