Patent ID: 9081201
Filing Date: 2015-07-14
Classification: G02B

Abstract:
1. An optical unit comprising: a collimating optical system that is connected to one end of an optical fiber, collimates light from the optical fiber, and emits collimated light; a beam expander optical system that receives, through an incident surface thereof, the collimated light emitted from the collimating optical system, expands a beam diameter of the collimated light, and emits the collimated light; an optical substrate that mounts the collimating optical system and the beam expander optical system on a main surface thereof; and a rotating mechanism that rotates the one end of the optical fiber and the collimating optical system around a first rotation axis along a first direction perpendicular to the main surface of the optical substrate to thereby change an incident angle of the collimated light with respect to the incident surface of the beam expander optical system.