Patent ID: 7864393
Filing Date: 2011-01-04
Classification: G02B,G03B

Abstract:
1. An optical scanning element being configured to scan an incident optical flux by a swingable reflection surface, the optical scanning element comprising: a first member which is constituted of a mirror portion which has the reflection surface, a mirror supporting portion which is connected to the mirror portion and forms a swing axis which is configured to allow the mirror portion to generate swinging thereof by a torsional displacement thereof, and a frame portion which is connected to the mirror supporting portion and is configured to allow the mirror supporting portion to generate a torsional displacement by oscillations thereof; a second member which fixes and holds the frame portion of the first member thereon; and a piezoelectric body which is fixedly mounted on the frame portion of the first member and is configured to transmit oscillations to the frame portion, wherein the frame portion includes a beam portion and fixing portions which are positioned at both ends of the beam portion, the mirror supporting portion is connected to the beam portion at a connection point, the frame portion is fixed to the second member at the fixing portions, and the piezoelectric body is fixedly mounted on the frame portion in a state that the piezoelectric body extends toward the connection point of the beam portion from the fixing portion to a position not over the connection point thus extending over the beam portion and the fixing portion.