Aperture system

Aperture-ring-and-shutter device

Aperture/shutter system with a motor component

Blade mechanism

Camera shutter apparatus

Driving apparatus, light-amount regulating apparatus, and...

Electromagnetic actuator for providing a hard stop for moving bl

Imaging apparatus with exposure controlling mechanism

Lens-shutter device

Light amount adjustment apparatus, manufacturing method, and...

Light controller and image pickup device including the same

Light quantity adjusting device

Light-quantity controlling device and apparatus using the same

Method of controlling exposure of camera and diaphragm...

Miniaturized lens assembly

Optical element

Quantity-of-light adjusting device and optical apparatus...

Quantity-of-light adjusting device and optical apparatus...

Rotation driving device and optical apparatus having the same

Shutter device of camera