US 12,393,110 B2
Optical member driving device and projection display apparatus including the same
Takaaki Gyoten, Hyogo (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
Filed on Feb. 24, 2022, as Appl. No. 17/679,767.
Claims priority of application No. 2021-035598 (JP), filed on Mar. 5, 2021.
Prior Publication US 2022/0283482 A1, Sep. 8, 2022
Int. Cl. G03B 21/14 (2006.01); G02B 7/182 (2021.01); H01F 7/08 (2006.01)
CPC G03B 21/142 (2013.01) [H01F 7/081 (2013.01); G02B 7/1821 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An optical member driving device comprising:
an optical member that light is incident on;
a plurality of actuators that shift different portions of an outer peripheral edge of the optical member in a traveling direction of the light immediately before the light is incident on the optical member,
wherein
each of the plurality of actuators includes
an arm that rotates about a rotation center line extending in a direction perpendicular to the traveling direction and supports the optical member at a first end of the arm,
a conductor that is provided at a second end of the arm and extends in a direction from the second end toward the first end of the arm, the conductor being where a current flows, and
at least one magnet pair that is provided to sandwich the second end of the arm at an interval and generates a magnetic field in a direction intersecting with a direction where the conductor extends, and
wherein the conductor is a coil.