Patent ID: 8823928
Filing Date: 2014-09-02
Classification: A61B,G01H,G01J,G16H

Abstract:
1. An apparatus comprising: first light source capable of generating pulses of light at a first predominant wavelength; second light source capable of generating pulses of light at a second predominant wavelength; internal light path comprising: external light path connected to the internal light path via the common light output connection terminal, the external light path comprising: power meter calibrated to determine power at the first and second predominant wavelength, the power meter adapted to measure power at the first predominant wavelength in proximity to the at least one optical window after the first light sync is detected, and to measure power at the second predominant wavelength in proximity to the at least one optical window after the second light sync is detected; and the apparatus having a calibration mode wherein the apparatus is adapted to electrically attenuate the first optical attenuator when the power measured by the power meter at the first predominant wavelength in proximity to the at least one optical window after the first light sync is detected is above a first level, and to electrically attenuate the second optical attenuator when the power measured by the power meter at the second predominant wavelength in proximity to the at least one optical window after the second light sync is detected is above a second level.