Camera Lens Image Stabilization Correction Ratio Control
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Solution Overview
Problem
Existing imaging systems with image stabilization functions face limitations due to mechanical and electrical restrictions, leading to incomplete image stabilization and increased communication traffic between camera and lens, and unnatural changes in the angle of view when moving correction lenses and image sensors.
Innovation Solution
A camera system that includes a first and second correction unit for image stabilization, where one unit is moved before imaging and both are moved during imaging, with a setting unit to adjust the correction ratio between the units based on their positions, allowing for efficient image stabilization without unnaturally altering the angle of view and reducing communication traffic.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the correction lens is moved to its movement center when imaging starts, then the image stabilization can be maximized, but the angle of view changes unnaturally
Solution Approach 1:
The patent applies preliminary action by moving the correction lens to a predetermined position before imaging starts, rather than moving it to the movement center during imaging. This preliminary positioning allows the correction lens to be in an optimal location for maintaining natural angle of view while still enabling effective image stabilization during the actual imaging process.
2Reliability
If the image sensor is moved according to the position of the correction lens before imaging, then the correction ratio can be optimized, but the communication traffic increases and image stabilization is delayed
Solution Approach 1:
The patent applies preliminary action by pre-calculating and pre-setting the correction ratio based on the predetermined position of the correction lens before imaging starts. This eliminates the need for constant communication and real-time adjustment during imaging, thereby reducing communication traffic and eliminating delays in image stabilization.
3Reliability
If both correction units are moved during imaging, then the image stabilization range is maximized, but the complexity of controlling the correction ratio increases
Solution Approach 1:
The patent applies local quality by setting different correction ratios for different directions (first direction and second direction) based on the position of the correction lens. This allows independent optimization of correction ratios in each direction, simplifying the overall control complexity while maximizing the image stabilization range through directional-specific adjustments.
Data Source
AI summary
A lens apparatus detachable from a camera that includes a first correction unit movable for an image stabilization in a camera system including the lens apparatus and the camera. The lens apparatus includes a second correction unit movable for the image stabilization, and a setting unit. The camera system moves one correction unit of the first correction unit and the second correction unit and does not move the other correction unit in the image stabilization before imaging for recording starts, and moves the first correction unit and the second correction unit in the image stabilization during the imaging for recording, and the setting unit sets information on a correction ratio between the first correction unit and the second correction unit for each direction of the one correction unit from a position of the one correction unit when the imaging for recording starts.