Volume holographic imaging system (VHIS) endoscope

A modular volume holographic imaging system (VHIS) endoscopic system, comprising:

• an endoscope attachment module having
• an observing end and a distal attachment end,
• a microscope objective lens positioned at the observing end,
• a single or cascaded compensated relay system having one or a plurality of pupil relays positioned between the objective lens and the distal attachment end and configured to preserve an optical wavefront for use with a single or multiplexed volume hologram to select wavefronts originating from different object depths, and
• a system aperture with pupil positioned between the objective lens and the one or the plurality of pupil relays;
• and
• a handle module configured to be reversibly attachable for operative communication with the endoscope attachment module, and having
• a beam splitter,
• a relay having adjustable spacing for object space focus compensation, and
• a single or multiplexed volume hologram suitable in operation to select wavefronts originating from different object depths, and wherein the handle module is further configured for operative communication with an illumination source and imaging optics.