Normalized spectral analysis for endoscope assessment

A non-transitory machine-readable storage medium comprising instructions for normalizing spectrum to evaluate endoscope transmission, which when executed by circuitry of a machine, cause the circuitry to:

• illuminate an entrance pupil of an endoscope with a first radiant flux, wherein the first radiant flux has a first spectrum;
• measure a second radiant flux at an exit pupil of the endoscope, wherein the second radiant flux has a second spectrum;
• and
• determine a transmission measurement through the endoscope by comparing the first spectrum and the second spectrum.

A system for normalizing spectrum to evaluate endoscope transmission, the system comprising:

• an endoscope having an entrance pupil and an exit pupil;
• a first light source diffused through a first integrating sphere, wherein a first integrating sphere is configured to illuminate the entrance pupil of the endoscope with a first spectrum of light;
• and
• a spectrometer configured to measure a second spectrum of light exiting a second integrating sphere, wherein the second integrating sphere is configured to collect light at the exit pupil of the endoscope;
• wherein the system is further configured to determine a transmission measurement through the endoscope by comparing the first spectrum and the second spectrum.