CPC G01B 11/24 (2013.01) [G01L 1/24 (2013.01); G06F 3/016 (2013.01)] | 33 Claims |
1. A retrographic sensor comprising:
a transparent shell including at least a portion having a curved interior surface and a curved exterior surface;
a transparent elastomeric pad disposed on the curved exterior surface;
an at least partially reflective layer disposed on the transparent elastomeric pad such that the transparent elastomeric pad is disposed between the at least partially reflective layer and the transparent shell; and
one or more light sources configured to emit light into the transparent shell.
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