Patent ID: 7688453

Claim:
A lens testing apparatus comprising: a source of coherent light; a reference arm that is configured to propagate a first portion of the coherent light within the reference arm; a vertical test arm that is configured to propagate a second portion of the coherent light downward within the vertical test arm, wherein an optical path length of the test arm is equal to an optical path length of the reference arm; a cuvette that is positioned within the vertical test arm and configured to: enclose a lens submersed in a solution; and propagate the second portion of the coherent light downward through the lens; a first detector configured to record, at a first resolution, a first portion of a combination of the first portion of the coherent light propagating from the reference arm and the second portion of the coherent light propagating from the test arm; and a second detector configured to record, at a second resolution, a second portion of the combination of the first portion of the coherent light propagating from the reference arm and the second portion of the coherent light propagating from the test arm.