Lens Focus Adjustment via Temperature Feedback for Time-Lapse Imaging
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Solution Overview
Problem
Existing imaging devices face challenges in maintaining focus accuracy during time-lapse photography due to temperature changes, which cause lens expansion or contraction, leading to significant focus position shifts.
Innovation Solution
A control device and method that utilize a temperature sensor and processor to adjust the focus position of the lens automatically when temperature changes exceed a predetermined value, employing autofocus to maintain focus accuracy throughout the photography process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If time-lapse photography is performed for a long duration, then productivity is improved, but focus position shifts due to temperature changes worsen
Solution Approach 1:
The system continuously monitors temperature changes during time-lapse photography and automatically adjusts focus position based on the temperature data. The processor receives temperature information from the temperature sensor and controls the lens to maintain accurate focus, creating a closed-loop feedback system that resolves the contradiction between long-duration photography and focus accuracy.
Solution Approach 2:
The system changes the focus position parameter in response to temperature changes. When the temperature sensor detects a change greater than or equal to a predetermined value, the processor adjusts the lens focus position to compensate for thermal expansion or contraction, thereby maintaining imaging quality throughout extended photography sessions.
2Manufacturing precision
If focus adjustment is performed frequently to maintain accuracy, then focus position accuracy is improved, but device complexity increases
Solution Approach 1:
The imaging device performs self-adjustment by automatically detecting temperature changes and correcting focus position without external intervention. The integrated temperature sensor and processor work together with the lens mechanism to autonomously maintain focus accuracy, reducing the need for complex manual control systems.
Solution Approach 2:
The temperature sensor acts as an intermediary that bridges the gap between environmental conditions and focus control. By measuring temperature changes and providing this information to the processor, the sensor enables indirect control of the lens focus position, simplifying the overall control architecture while maintaining accuracy.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Effectively suppresses large changes in focus position during time-lapse photography by adjusting the lens focus position in response to temperature changes, ensuring consistent image quality.
Implementation Method 1
the focus shift caused by lens expansion or contraction caused by a temperature change
Data Source
AI summary
A control device includes a processor and a memory storing instructions that, when executed by the processor, cause the processor to obtain temperature information measured by a temperature sensor of an imaging device and perform adjustment on a focus position of a lens of the imaging device in response to a temperature change amount being greater than or equal to a predetermined value during the imaging device capturing a plurality of images at a predetermined time interval.