Optical scanning device, imaging device, and distance measurement device

An optical scanning device for displaying or capturing an image, the optical scanning device comprising:

• an optical scanning unit configured to scan emitted light while drawing a spiral trajectory, the optical scanning unit including:
• a light guide path configured to guide incident light to output the emitted light from an emission end;
• and
• a vibration unit configured to vibrate the emission end;
• a light emission control unit configured to control light emission of the emitted light;
• a polar coordinate generation unit configured to generate a radius rdrv and a deflection angle relating to the spiral trajectory;
• a driving signal generation unit configured to generate a driving signal for driving the vibration unit by using the radius rdrv and the deflection angle;
• an angle correction unit configured to perform calculation for correcting an angle based on information from the driving signal generation unit and output a corrected angle θcalc;
• and
• a coordinate calculation unit configured to calculate coordinates of an image by using the radius rdrv and the corrected angle and output image coordinates;
• and
• when a(r) and b(r) are functions having raw as an argument, the coordinate calculation unit outputs a result calculated by using a(r)·rdrv·cos(θcalc) as an x-coordinate of the image coordinates and outputs a result calculated by using b(r)·rdrv·sin(θcalc) as a y-coordinate of the image coordinates.