SPECTROCHEMICAL ANALYSIS DEVICE USING LASER LIGHT

PURPOSE:To make it possible to set the distance between the surface of a sample and a spectroscope arbitrarily, by providing a condenser lens, which makes light from a sample ring shaped parallel light, and a spectroscope optical system, and making laser light and the light from the sample in parallel between the lens and the system on the same axis. CONSTITUTION:A condenser lens 32 converges laser light 13 on a sample 16 and makes light 33 emitted from the sample ring shaped parallel light, which is propagated in the reverse direction with respect to the laser light 13 on the same axis. A ring shaped concave mirror 34 and a spectroscope optical system including expandable mirror tubes 40 and 40a, which guide the light 33 from the sample that is made to be the ring shaped parallel light to a spectroscope 22, are provided. The light 33 from the sample can be efficiently guided to the spectroscope by the adjustment of the mirror tubes 40 and 40a, regardless of the length of the distance between the sample 16 and the spectroscope 22. Thus the highly accurate, general purpose device can be obtained.