A clamping device (300) for a light guide (112) is provided. The clamping device (300) includes a carrier structure having a first securing element (301) for securing the light guide (112) in a first position (401), and a second securing element (302) at a distance from the first securing element (301) for securing the light guide (112) in a second position (402), wherein the first and second positions (401, 402) have a first distance (403) in a longitudinal extension of the light guide (112). Further, an intermediate carrier (500) having a first surface (503) on which the first and second securing elements (301, 302) are attached in respective securing positions (501, 502), and an opposing second surface (504), which can be applied to a measurement object, is provided. Hereby, a second distance (505) of the securing positions (501, 502) of the securing elements (301, 302) on the intermediate carrier (500) is greater than the first distance (403) in a longitudinal direction of the light guide (112).