Focal Plane Shutter Driving Mode Switching
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional focal plane shuttering apparatuses require complex mechanisms to switch between normally closed and normally opened states, limiting their utility and efficiency in image capture devices.
Innovation Solution
A focal plane shuttering apparatus that can change its state by reversing the direction of a charging actuator, eliminating the need for locking and unlocking mechanisms, and allowing seamless transitions between normally closed and normally opened modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a focal plane shuttering apparatus uses complex locking and unlocking mechanisms to switch between normally closed and normally opened states, then the state switching capability is achieved, but the device complexity increases and preparation time is extended
Solution Approach 1:
The patent extracts and eliminates the complex locking and unlocking mechanisms from the focal plane shuttering apparatus. By removing these unnecessary components, the system achieves state switching capability through a simplified charging actuator that can directly position the front curtain in either charged or uncharged states, thereby reducing device complexity while maintaining adaptability
Solution Approach 2:
The charging actuator is designed to perform multiple functions: it can charge the front curtain, maintain it in a charged state for normally opened operation, and allow it to return to uncharged state for normally closed operation. This multi-functional design eliminates the need for separate locking and unlocking mechanisms, resolving the contradiction between versatility and complexity
2Stability of the object's composition
If a focal plane shuttering apparatus uses locking mechanisms to maintain charged state, then the normally opened state can be maintained, but the preparation time for shooting modes increases
Solution Approach 1:
The charging actuator performs preliminary action by charging the front curtain in advance and maintaining it in the charged state. This allows the system to quickly transition to normally opened shooting mode without requiring additional locking operations, thereby reducing preparation time while maintaining stable charged state
Solution Approach 2:
The patent replaces the mechanical locking system with an electronically controlled charging actuator that can maintain the charged state through electrical control. This substitution eliminates the time-consuming mechanical locking and unlocking operations, reducing preparation time while maintaining the stability of the charged state
3Adaptability or versatility
If a focal plane shuttering apparatus separates front curtain charging setting lever from driving member, then the normally opened state is realized, but the device complexity increases
Solution Approach 1:
The patent merges the front curtain charging setting lever and the driving member into a single integrated charging actuator. This unified structure eliminates the need for separate locking mechanisms and complex mechanical linkages, thereby reducing device complexity while maintaining the capability to realize normally opened state
Data Source
AI summary
This image capture device includes: an imager which receives an optical image of a subject and outputs image data; a focal plane shuttering apparatus which restricts incidence of the optical image onto the imager and which is able to select either a normally opened driving method or a normally closed driving method; and a driving method switching section which switches a method for driving the focal plane shuttering apparatus into one of the normally opened and normally closed driving methods. The driving method switching section switches the method for driving the focal plane shuttering apparatus into the normally opened driving method after an image capturing operation has been performed.