Imaging Apparatus Dynamic Focus Lens Position Update
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Solution Overview
Problem
Existing imaging systems face challenges in accurately setting a target position for the focus lens, particularly when capturing specific scenes in cinema cameras, as they rely on touch operations which can be cumbersome and lead to time lags in adjusting the focus state.
Innovation Solution
An imaging apparatus and control device system that allows for communication between the camera and an external control device, enabling the transmission of commands for driving the optical members, including a mechanism to update the target position during the driving process, ensuring precise control and alignment with user intention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If touch operation is used to set focus lens driving amount, then the operation is simplified, but it becomes difficult to set the target position for obtaining desired focus state
Solution Approach 1:
The patent introduces a dial operation member as an intermediary device between the user and the focus lens control system. This dial member provides tactile feedback and precise mechanical control, allowing users to accurately set target positions while maintaining ease of operation. The dial operation member translates rotational input into precise focus lens positioning commands.
2Device complexity
If a single command is transmitted for focus lens driving, then the control is simple, but it causes time lag when updating target position during driving
Solution Approach 1:
The patent implements continuous command transmission during the focus lens driving process. Instead of waiting for the initial command to complete before issuing updates, the system continuously monitors dial operation and transmits new target position commands in real-time. This continuous action eliminates time lags and ensures the focus lens responds dynamically to user input throughout the entire adjustment process.
Solution Approach 2:
The system incorporates feedback mechanisms where the imaging apparatus continuously monitors the focus lens driving state and communicates with the control device. This feedback loop allows the system to detect when the focus lens is still moving and to send updated target position commands accordingly, ensuring real-time responsiveness without causing conflicts or time lags.
3Adaptability or versatility
If the target position is updated during driving control, then the user intention is better reflected, but the control logic becomes more complex
Solution Approach 1:
The patent implements dynamic target position updating where the target position can change during the focus lens driving process. The controller logic is designed to dynamically adjust the target position based on ongoing dial operations, allowing the system to adapt to changing user intentions in real-time. This dynamic approach enables flexible and responsive focus control while maintaining manageable complexity through structured command handling.
Data Source
AI summary
An imaging apparatus capable of communicating with an external control device and configured to capture a subject image formed via an optical member includes a communication interface and a controller, wherein the controller starts the driving of the optical member based on a first command received from the control device via the communication interface, and wherein when the communication interface receives from the control device a second command different from the first command before completion of driving control of the optical member, the controller updates a target position as a target of driving the optical member based on the second command.