Patent attributes
A light measuring apparatus includes a light source configured to emit light to a sample, and a light guide optics system configured to guide light generated as a result of applying the emitted light to the sample, to a photodetector, wherein the light guide optics system is provided in a lightproof unit, and includes optical elements for guiding the generated light to the photodetector, a positioning part for adjusting a position of at least one of the optical elements, and a position detecting part for detecting a position of at least one of the optical elements by an optical method, and the light measuring apparatus comprises a position adjusting part which adjusts the positions of the optical elements by controlling the positioning part and position detecting part, and a light emission control unit which controls operations of starting and stopping light emission of the position detecting part.