SCANNING APPARATUS HAVING LARGE SCANNING RANGE, LASER PROJECTOR, AND OPTICAL APPARATUS

摘要

PURPOSE: A scanning apparatus, a laser projector, and an optical apparatus are provided to obtain a large scanning range using a simplified structure of the scanning apparatus. CONSTITUTION: A scanning apparatus includes a scanning portion(102) scanning a laser having a beam shape and a projection optical system(300) receiving the laser from the scanning portion. The projection system includes a first lens group(G1) and a second lens group(G2) each having a positive refraction characteristic implemented sequentially from the scanning portion. The scanning portion is implemented on a proximity around a focal point of an incident surface from the first lens group. The first and second groups are arranged such that a focal point on an incident surface of the laser from the first lens group approximately coincide with a focal point on an incident surface of the laser from the second lens group. An absolute value of a focal distance of the first lens group divided by a focal distance of the second lens group is greater than 1.