Illumination device

An illumination device comprising:

• a laser light source;
• a cylindrical body disposed such that light emitted from the laser light source enters the cylindrical body at a first end portion side of the cylindrical body and passes through the cylindrical body;
• a reflector disposed so as to reflect light passing through the cylindrical body;
• and
• a ring assembly comprising a ring-shaped inner circumferential surface configured to reflect and propagate light from the reflector,
• wherein the reflector comprises:
• a first reflecting surface configured to reflect a first portion of light emitted from the laser light source such that the first portion of light is propagated from a first side of the inner circumferential surface in a circumferential direction to a second side of the inner circumferential surface in the circumferential direction, and
• a second reflecting surface configured to reflect a second portion of light emitted from the laser light source such that the second portion of light is propagated from the second side of the inner circumferential surface in the circumferential direction to the first side of the inner circumferential surface in the circumferential direction, and
• wherein the ring assembly further comprises a fluorescent surface adapted to emit fluorescence by light reflected and propagated at the inner circumferential surface.