Patent ID: 11940642
Assignee: OLYMPUS WINTER & IBE GMBH
Field: Medical technology (Instruments)
Classification: CPC G  A | IPC A  F

Claim 0:
1. An illumination device for use in fluorescence image guided surgery, the illumination device comprising:
a white light guiding portion;
an excitation light guiding portion; and
a mixed light guiding portion;
wherein the white light guiding portion comprises a glass rod extending in a longitudinal direction from a first rod end configured to receive white light, to a second rod end configured to emit the white light, the glass rod comprising a first rod end face at the first rod end, a second rod end face at the second rod end and a circumferential surface extending between the first rod end face and the second rod end face;
the excitation light guiding portion comprises a plurality of optical fibers, each extending from a first fiber end configured to receive excitation light, to a second fiber end configured to emit the excitation light, the second fiber ends of the plurality of optical fibers being configured to surround the circumferential surface of the glass rod at the second rod end;
the mixed light guiding portion comprises an optical mixing rod extending in the longitudinal direction from a first mixing rod end configured to receive the white light and the excitation light, to a second mixing rod end configured to emit mixed light, the mixing rod comprising a first mixing rod end face at the first mixing rod end, a second mixing rod end face at the second mixing rod end and a circumferential surface extending between the first mixing rod end face and the second mixing rod end face;
the glass rod is arranged to couple the white light guided in the glass rod into the mixing rod via the second rod end face of the glass rod and the first mixing rod end face of the mixing rod; and
each of the plurality of optical fibers are arranged to couple the excitation light guided in the plurality of optical fibers into the mixing rod via end faces at the second fiber ends of the plurality of optical fibers and the first mixing rod end face of the mixing rod.