Light scanning device and display apparatus

摘要

Provided is a light-scanning device may be designed to have a high resonance frequency and a large scanning angle. A mirror unit vibrates by using an arbitrary straight line as a rotation axis. A pair of first beam portions are disposed on a straight line that is parallel to the rotation axis, and support the mirror unit. A pair of second beam portions are disposed so as to be line-symmetrical to the pair of the first beam portions about the rotation axis as an axis of symmetry, and support the mirror unit. A pair of first arm portions respectively support the pair of first beam portions. A pair of second arm portions respectively support the pair of second beam portions. A pair of third beam portions support the mirror unit between the first beam portions and the second beam portions.

主权项

1. A light-scanning device comprising:
a mirror unit which vibrates using an arbitrary straight line as a rotation axis; a pair of first beam portions which are respectively disposed on a straight line that is parallel to the rotation axis, and support the mirror unit; a pair of second beam portions which are respectively disposed to be line-symmetrical to the pair of first beam portions about the rotation axis as an axis of symmetry, and support the mirror unit; a pair of first arm portions which respectively support the pair of first beam portions; a pair of second arm portions which respectively support the pair of second beam portions; a pair of third beam portions which support the mirror unit between the first beam portions and the second beam portions; a pair of third arm portions which respectively support the pair of third beam portions; and a frame portion which supports the first arm portions, the second arm portions, and the third arm portions.