A spectroscopic apparatus comprising: a light radiating portion, including a first solid-state light source configured to emit first light having a first wavelength which has a predetermined absorptivity for a specific object, and a second solid-state light source configured to emit second light having a second wavelength which has a smaller absorptivity for the specific object than the first wavelength; a half mirror configured to transmit the emitted first light and the emitted second light; wherein the transmitted first light is a collimated light and the transmitted second light is a collimated light; a scanning portion configured to radiate the transmitted first light and the transmitted second light to the target by changing a scanning angle of the scanning portion so that the radiated first light and the radiated second light scans the target in 2-dimensional directions, and to reflect, to the half mirror, (i) first reflected light, which has been reflected by the target, of the radiated first light and (ii) second reflected light, which has been reflected by the target, of the radiated second light; a light receiving portion configured to receive (i) the first reflected light that has been reflected by the scanning portion and the half mirror and (ii) the second reflected light that has been reflected by the scanning portion and the half mirror, wherein the optical path of the transmitted first light and the transmitted second light from the half mirror to the scanning portion and the optical path of the first reflected light and the second reflected light from the scanning portion to the half mirror are the same; a light source control portion configured to drive the first and second solid-state light sources (11a, 11b) so that the first reflected light with the first wavelength and the second reflected light with the second wavelength are received in a discriminated manner by the light receiving portion; and a distance measuring portion configured to measure a time until light emitted from the first solid-state light source or the second solid-state light source is reflected by the target and arrives at the light receiving portion, and to calculate a distance between the spectroscopic apparatus and the target. a light radiating portion, including a first solid-state light source configured to emit first light having a first wavelength which has a predetermined absorptivity for a specific object, and a second solid-state light source configured to emit second light having a second wavelength which has a smaller absorptivity for the specific object than the first wavelength; a half mirror configured to transmit the emitted first light and the emitted second light; wherein the transmitted first light is a collimated light and the transmitted second light is a collimated light; a scanning portion configured to radiate the transmitted first light and the transmitted second light to the target by changing a scanning angle of the scanning portion so that the radiated first light and the radiated second light scans the target in 2-dimensional directions, and to reflect, to the half mirror, (i) first reflected light, which has been reflected by the target, of the radiated first light and (ii) second reflected light, which has been reflected by the target, of the radiated second light; a light receiving portion configured to receive (i) the first reflected light that has been reflected by the scanning portion and the half mirror and (ii) the second reflected light that has been reflected by the scanning portion and the half mirror, wherein the optical path of the transmitted first light and the transmitted second light from the half mirror to the scanning portion and the optical path of the first reflected light and the second reflected light from the scanning portion to the half mirror are the same; a light source control portion configured to drive the first and second solid-state light sources (11a, 11b) so that the first reflected light with the first wavelength and the second reflected light with the second wavelength are received in a discriminated manner by the light receiving portion; and a distance measuring portion configured to measure a time until light emitted from the first solid-state light source or the second solid-state light source is reflected by the target and arrives at the light receiving portion, and to calculate a distance between the spectroscopic apparatus and the target.