Focal Plane Shutter Switching Mechanism Reducing Power Consumption

The patent extracts and eliminates the permanent magnet rotor from the switching mechanism, retaining only the essential solenoid component. This simplification removes the expensive permanent magnet assembly while preserving the core functionality of switching between normally open and normally closed systems through the solenoid's linear motion.

The patent replaces the expensive permanent magnet rotor with a simpler, more cost-effective solenoid-based stopping member. The stopping member uses a coil that can be electrically actuated without requiring permanent magnets, thereby reducing manufacturing costs while maintaining the switching capability.

The patent segments the switching mechanism into independent functional components: the solenoid for actuation and the stopping member with engaging portion for locking. This segmentation allows each component to be optimized independently and facilitates flexible configuration arrangements that are not constrained by the integrated structure of a permanent magnet rotor.

The patent employs a dynamic stopping member that can move between locked and unlocked positions based on electrical actuation. This dynamic design provides greater configurational flexibility compared to the fixed structure of a permanent magnet rotor, allowing the system to adapt to different imaging mode requirements through electrical control rather than mechanical constraints.

Instead of using bidirectional current to achieve reciprocating motion, the patent inverts the approach by using unidirectional current with the solenoid's inherent return spring mechanism. The solenoid extends when energized and returns to its original position when de-energized, achieving reciprocating action without the need for reverse current, thereby reducing power consumption.

The patent implements periodic reciprocating action through controlled electrical actuation cycles. The solenoid is activated only when switching between imaging modes is required, and remains inactive during normal operation. This periodic activation pattern reduces overall power consumption compared to continuous bidirectional current switching, while still achieving the necessary reciprocating motion of the stopping member.