Abstract: A control apparatus for an image display system that includes a first optical system configured to form a first optical image of an object, a second optical system configured to form a second optical image of the object, a first driving unit configured to move a first imaging position of the first optical image and a second imaging position of the second optical image, a second driving unit configured to move the second imaging position, and an operation unit operable to adjust the second driving unit includes a memory storing instructions, and a processor configured to execute the instructions to acquire information regarding the first imaging position and the second imaging position, and cause a display unit to display the information in a case where the second driving unit moves the second imaging position in accordance with an operation on the operation unit.

Abstract: A vibration wave driving apparatus includes a vibrator configured to vibrate and movable relative to a friction member to generate a driving force, a pressing member configured to pressurize the vibrator, a transmission member configured to transmit a pressing force by the pressing member to the vibrator, a holding member configured to hold the vibrator, and a viscoelastic member configured to connect the holding member and the transmission member to each other.