Optical Driving Apparatus Finger Jamming Prevention
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Solution Overview
Problem
Existing optical driving apparatuses for interchangeable lenses and image capturing devices often result in fingers being jammed or repelled when manually operating the zoom ring, due to the design of the space between the apparatus and the ring member, leading to user discomfort and operational issues.
Innovation Solution
An optical driving apparatus equipped with detectors and a controller that detect objects, such as fingers, inserted into the space between the ring member and the apparatus body, and adjust the motor's operation to prevent jamming by stopping or reversing the rotation when a predetermined pressure is applied, ensuring safe and smooth operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the space between the optical driving apparatus and the ring member is designed to allow manual operation, then the ease of operation is improved, but the safety is worsened due to risk of finger jamming
Solution Approach 1:
The patent implements a detection mechanism that provides feedback about the presence of a finger in the space between the apparatus and ring member. The controller receives detection signals and adjusts the motor driver's operation accordingly, stopping or reversing rotation when a finger is detected to prevent jamming while allowing manual operation when the space is clear.
Solution Approach 2:
The system dynamically adjusts the ring member's rotation based on real-time detection of finger presence. The motor driver changes its operation from continuous rotation to stopped or reversed state when a finger is detected, creating a dynamic response that adapts to user actions and prevents harmful effects.
2Adaptability or versatility
If the ring member is made rotatable for zooming operation, then the functionality is improved, but the safety is worsened due to potential finger repulsion
Solution Approach 1:
The detection mechanism provides continuous feedback about finger presence in the critical space. When a finger is detected, the controller sends a signal to the motor driver to stop or reverse rotation, preventing the ring member from repelling the finger and ensuring safe operation during zooming.
Solution Approach 2:
The system takes preliminary action by detecting finger presence before the ring member can complete a rotation that would cause repulsion. The detection mechanism anticipates the harmful effect and triggers the controller to stop or reverse rotation in advance, preventing finger repulsion before it occurs.
Data Source
AI summary
An optical driving apparatus attached to an optical apparatus having a ring member that is rotatable on an outer circumference of a barrel includes a driver configured to rotate the ring member, a detector configured to detect an object that has entered a space between the optical apparatus and the optical driving apparatus, and a controller configured to control the driver in accordance with a detection of the object by the detector when the driver is rotating the ring member. The detector has a contacted portion configured to contact the object, and detects the object when the object is pressed against the contacted portion.