CPC G01S 17/88 (2013.01) [G01S 7/4817 (2013.01); G02B 26/105 (2013.01); G02B 26/108 (2013.01); G02B 27/30 (2013.01)] | 28 Claims |
1. An optical device comprising:
a plurality of light sources separated from each other in a vertical direction, and configured to emit laser beams in parallel in a horizontal direction;
a light direction changing unit comprising a plurality of prisms or a plurality of mirrors provided on traveling paths of the laser beams, which travel in parallel from the plurality of light sources to the plurality of prisms or the plurality of mirrors, and configured to focus the laser beams at one point by changing travelling directions of the laser beams to form non-zero angles between the traveling paths of the laser beams at the one point; and
a scanning mirror configured to perform two-dimensional scanning by reflecting the laser beams received from the light direction changing unit.
|