DUAL VARIABLE-BASED OSCILLATION OPTICAL FREQUENCY SCANNING LASER LIGHT SOURCE, MEASUREMENT DEVICE USING SAME, AND DISTANCE MEASUREMENT DEVICE ACCORDING TO OBJECT ANGLE, WHICH USES PROPAGATION ANGLE SWITCHING FOR EACH CENTER WAVELENGTH

摘要

The present invention relates to a dual variable-based oscillation optical frequency scanning laser light source which enables sequential scanning of oscillation laser outputs, throughout the entire band wider than a channel band, and a measurement device using same, the device comprising: an optical gain unit for generating and amplifying light; a transmission broadband variation unit for selecting a specific optical frequency band from the light generated by the optical gain unit, and varying the selected specific optical frequency band to transmit light; a resonant optical frequency variation unit for performing a frequency change so that multiple resonant optical frequency orders within the specific optical frequency band vary over a variation range narrower than intervals between the respective orders; resonance induction units for forming an optical resonance unit which includes the optical gain unit, the transmission broadband variation unit, and the resonant optical frequency variation unit and causes selective oscillation of light having a specific resonance optical frequency within a specific transmission broadband; and a control signal unit for varying each of the transmission broadband variation unit and the resonance optical frequency variation unit.