Optical path changing element, connection structure of optical path changing element, light source device and optical mounting device

摘要

The optical path changing element 4 is composed of a supporting substrate 5 and an optical crystal and is a thin layer 6 formed on the supporting substrate and includes a first main surface 6 a on the supporting substrate side and a second main surface 6 a on the side opposite to the supporting substrate , And a ridge type optical waveguide 8 partitioned by at least a pair of ridge grooves 7 formed in the thin layer 6. The ridge type optical waveguide 8 has a light incident surface 8a and an optical waveguide 8 And a reflecting surface 8 b for reflecting the light propagating through the ridge type optical waveguide. The light reflected from the reflecting surface is emitted from the surface through a thin layer.