Foveal image inverter

An image-conducting optical fiber bundle having an image input end and an image output end, the bundle comprising:

• a plurality of adjacently constituent optical fibers, each optical fiber having a first end coinciding with the image input end and a second end coinciding with the image output end, wherein
• (i) the bundle extends longitudinally along a central bundle axis;
• and
• (ii) the bundle has at least a first fiber zone and a second fiber zone that are concentrically arranged about the central bundle axis,
• wherein (a) the first fiber zone is nearer the central bundle axis than is the second fiber zone,
• wherein (b) the constituent optical fibers within the first fiber zone have an average overall fiber diameter that is smaller than an average overall fiber diameter of constituent optical fibers within the second fiber zone, and
• wherein (c) both the first fiber zone and the second fiber zone comprise image conducting optical fibers.