Patent ID: 9587983
Date: 2017-03-07
CPC Classifications: G01J,G02B,G03H

Claim:
1. An optical probe comprising: a laser source, the laser source having a laser center wavelength; at least one narrowband optical element receiving light emitted by the laser source, the narrowband optical element having a filter center wavelength, the narrowband optical element being arranged such that the filter center wavelength is initially spectrally aligned with the laser center wavelength, the filter center wavelength changing in response to a temperature change such that the filter center wavelength is not substantially aligned with the laser center wavelength; and a passive adjustment mechanism coupled to the narrowband optical element, the passive adjustment mechanism including an actuator, the actuator moving in response to the temperature change, the actuator motion rotating the narrowband optical element, the rotation compensating for the temperature change such that the filter center wavelength and laser center wavelength remain spectrally aligned.