Interchangeable Lens Blur Correction via Camera-Lens Vibration Data Sharing
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Solution Overview
Problem
Existing photographic apparatuses with interchangeable camera lenses face challenges in effectively discriminating between vibrations caused by intentional photographer operations and unwanted vibrations, leading to suboptimal blur correction due to the lack of efficient information sharing and processing between the camera and lens microcomputers.
Innovation Solution
A photographic apparatus with a camera and interchangeable lens system where the camera processes vibration angle information and transmits it to the lens, allowing the lens to control its optical system for blur correction, ensuring optimal blur correction by sharing information on the maximum correcting angle and updating it during power-on, lens mounting, or state changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single microcomputer performs all blur correction processes in the camera or lens, then the device structure is simple, but the ability to accurately discriminate intentional vibrations from unintentional vibrations deteriorates
Solution Approach 1:
The system divides the microcomputer functionality into two separate units: a camera-side microcomputer that processes vibration detection and angle information, and a lens-side microcomputer that receives this information and controls the blur correction optical system. This segmentation allows each unit to specialize in specific tasks, improving the accuracy of vibration discrimination while maintaining manageable device complexity.
2Device complexity
If the camera microcomputer processes all vibration information independently, then the lens control is simple, but the blur correction optimization deteriorates due to lack of lens-specific parameters
Solution Approach 1:
The lens-side microcomputer receives vibration angle information from the camera and uses it to control the blur correction optical system. This feedback mechanism ensures that the lens-specific parameters (such as focal length and aperture) are taken into account when performing blur correction, optimizing the correction precision while keeping the control system architecture straightforward.
3Device complexity
If blur correction information is not shared between camera and lens microcomputers, then the information processing is simple, but the vibration discrimination capability deteriorates
Solution Approach 1:
The camera-side microcomputer acts as an intermediary that collects vibration detection information and angle information, then transmits this processed information to the lens-side microcomputer. This intermediary role allows for efficient information sharing without requiring direct complex interactions between all system components, maintaining information processing simplicity while enabling accurate vibration discrimination.
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
This solution enables the photographic apparatus to accurately distinguish between intentional and unintentional vibrations, allowing for optimal blur correction by ensuring that the lens receives and applies the necessary correction information, thereby improving image clarity and reducing blur.
Implementation Method 1
an image-displacing unit that displaces an image and a blur correcting unit that controls the image-displacing unit based on the blur signal output from the blur signal-outputting unit so that the image-displacing unit displaces the image so as to cancel a blur of the image, the blur resulting from the vibration applied to the interchangeable camera lens
Data Source
AI summary
A photographic apparatus is provided and has a camera, an interchangeable camera lens, and a lens control unit. The camera unit has a blur signal-outputting unit and a camera control unit. The interchangeable camera lens has an image-displacing unit and a blur correcting unit. When a change in the state of an optical system of the interchangeable camera lens is recognized, the lens control unit generates blur correction process-information based on the state of the optical system after the change and transmits the blur correction process-information to a camera control unit.