A shutter apparatus uses separate front and rear driving sources to control blade unit timing for efficient power utilization.
Planar solenoid actuation rotates a magnet drive ring directly, replacing complex mechanical linkages to reduce thickness and enable high-speed cycling.
A camera shutter braking member decelerates the closing blade assembly, resolving the contradiction between high speed and reliability by reducing impact force.
An ophthalmic apparatus adjusts illumination light intensity to match the size of the illuminated eye region for effective image capture.
Symmetric cam surfaces apply equal forces to stabilize blade running speed in both forward and backward shutter motions.
An outer ring with annular grooves and flat abutting portions resolves coaxiality issues in injection molded lenses.
A blade driving device uses a slide member to charge the drive mechanism against a spring.
Non-planar hub regions deform the shutter blade to increase rigidity, resolving the trade-off between rotation speed and structural strength.
An orthogonal sliding shutter blocks the lens while preserving the optical field of view.
A dual-blade shutter assembly uses opposing toothed arms and a motor gear to control light transmission through overlapping apertures.
A focal plane shutter uses a brake member and plate spring to generate braking force during blade unit rotation.
A blade driving device uses a slider and operable member to move the camera cover.
Surface level down structures in the cap prevent blade floatation, eliminating bias and light leakage for accurate aperture positioning.
Optimized cam lift amounts prevent bearing member drop-out while maintaining smooth radial movement in mirror units.
A blade open-close device uses a light emitter to indicate its position through a cover opening.
Sliding rectilinear diaphragm blades adjust aperture size without requiring large lateral spaces, enabling compact imaging apparatus design.
A magnetic detent mechanism retains an optical shutter blade using field attraction, eliminating energy waste from continuous stepper motor operation.