US 12,405,519 B2
Lens retaining device and projection display apparatus
Junichi Takeuchi, Osaka (JP); Atsushi Takagi, Osaka (JP); Kohei Ueyama, Osaka (JP); and Kouji Tokura, Hyogo (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
Filed on May 13, 2022, as Appl. No. 17/743,929.
Claims priority of application No. 2021-086918 (JP), filed on May 24, 2021.
Prior Publication US 2022/0373872 A1, Nov. 24, 2022
Int. Cl. G03B 21/14 (2006.01)
CPC G03B 21/142 (2013.01) 10 Claims
OG exemplary drawing
 
1. A lens retaining device comprising:
a first shifter that holds a lens and moves in a first direction perpendicular to an optical axis direction of the lens; and
a second shifter that supports the first shifter and moves in a second direction perpendicular to the optical axis direction and the first direction, wherein
the first shifter includes:
a first main body that moves in the first direction;
a first shaft that is fixed to the second shifter and guides movement of the first main body;
a lens retainer that is provided on the first main body and retains the lens; and
a first drive portion that moves the first main body,
the lens retainer is integrally formed with the first main body,
the first main body includes a first shaft retainer disposed along the first direction and provided with a first shaft hole that the first shaft is disposed in,
the lens retainer has a contact surface that is perpendicular to the optical axis direction and is in contact with the lens,
the first drive portion includes a first actuator that applies force to move the first main body in the first direction, and
when viewed in the first direction, a first distance between the contact surface and a first virtual plane that is perpendicular to the optical axis direction and includes a shaft center of the first shaft is smaller than a diameter of the first shaft.