Multi-wavelength fiber-optic imaging device and system

A multi-wavelength fiber-optic imaging device, comprising:

• a plurality of optical fibers, configured to transmit a plurality of first light beams respectively, wherein the plurality of first light beams transmitted by the plurality of optical fibers are different in wavelengths, a first end of an optical fiber is configured to receive a first light beam, and a second end of the optical fiber is configured to output the first light beam;
• a scanner, disposed at a first-light-beam output side of the plurality of optical fibers, configured to receive the plurality of first light beams emitted from second ends of the plurality of optical fibers and change propagation directions of the plurality of first light beams to realize imaging scanning;
• an objective lens, disposed at a first-light-beam output side of the scanner, configured to focus the plurality of first light beams on the target tissue, to conduct imaging of the target tissue;
• and
• a collimating optical element, disposed between the plurality of optical fibers and the scanner, configured to collimate the plurality of first light beams emitted from the second ends of the plurality of optical fibers;
• wherein the collimating optical element comprises a second collimating lens disposed between the plurality of optical fibers and the scanner, and the second collimating lens is configured to collimate the first light beams emitted from the second ends of the plurality of optical fibers, and the second collimating lens has a second main optical axis;
• an extension direction of a rotation axis of a light cone formed by each first light beam emitted from the second end of the optical fiber is parallel to or coinciding with an extension direction of the second main optical axis;
• and
• the second collimating lens has a plurality of second focal points and a plurality of focal planes, the plurality of second focal points are in one-to-one correspondence with the plurality of first light beams, each focal plane comprises one second focal point, and the second end of the optical fiber corresponding to the first light beam is disposed at the focal plane corresponding to the same first light beam.