Method for assembling an iris diaphragm
Multi-blade lens-aperture control mechanism
Optical apparatus including diaphragm device
Optical density changing element, optical element and...
Optical density changing element, optical element and...
Optical density-changing element, optical element and...
Optical device, a fabricating method thereof, a driving...
Optical device, lens unit, and imaging apparatus
Optical diaphragm apparatus
Optical element parallax scanning device
Production process of light amount adjustment member, light...
Production process of light amount-adjusting member, light...
Stop device
Stretched diaphragm aperture for an optical system
Vane driving device
Vane driving device using a blade as a gear rotation...