Beam forming device for optical signal sensor, has fiber-optical light guide provided with cylindrically symmetric light-guiding area along longitudinal section, where light guide exhibits reflection surface along longitudinal section

摘要

The device has a fiber-optical light guide (5) which is provided with a cylindrically symmetric light-guiding area along a longitudinal section. The light guide exhibits a reflection surface with round cross section along the longitudinal section. The light guide comprises a rigid bar, which comprises a core (7) and a casing with lower refractive index than that of the core or gradient index of the light guide.