CPC A61B 1/002 (2013.01) [A61B 1/055 (2013.01); G02B 13/0095 (2013.01); G02B 23/2446 (2013.01); G02B 27/0062 (2013.01); H04N 23/00 (2023.01); H04N 23/555 (2023.01)] | 14 Claims |
1. An optical system, comprising:
a first relay rod of a first material, the first relay rod having no optical power;
a second relay rod of a second material, different from the first material, wherein the first and second materials are selected to reduce the wavefront error across the field of view of the optical system as compared with using a same material for both the first and second relay rods, the second relay rod having no optical power, wherein the first and second relay rods are geometrically symmetric to one another relative to a pupil or conjugate pupil of the optical system, the first and second relay rods having a same length; and
a lens between the first and second relay rods.
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