Camera Shake Correction Lens Control for Collision Prevention
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Solution Overview
Problem
Existing imaging apparatuses face issues where the correction lens for camera shake correction may physically collide with the end of its movable range due to inertia, leading to potential breakdowns and user misconceptions about device failure, exacerbated by miniaturization reducing the gap between the correction lens and the lens barrel unit.
Innovation Solution
An imaging apparatus that includes a detector to assess the amplitude of camera shake, determining whether it's within a normal range, and controlling the correction lens's movement accordingly, switching to a suppressed mode when outside this range to prevent collisions, thereby reducing the likelihood of physical contact with the movable range's end.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the correction lens is driven significantly to cancel large camera shake, then the shake correction effect is improved, but the correction lens may collide with the end of its movable range due to inertia
Solution Approach 1:
The determining unit detects large camera shake before the correction lens is driven to the end of its movable range. The controller preemptively limits the drive amount of the correction lens based on this detection, preventing the lens from reaching positions where inertia would cause collision with the end stops.
Solution Approach 2:
The system performs preliminary detection of camera shake amplitude and predetermined limit values before driving the correction lens. Based on this preliminary information, the controller calculates and applies appropriate drive limits to prevent excessive movement that would lead to collision, while still providing effective shake correction within safe boundaries.
2Volume of moving object
If the gap between the correction lens and lens barrel unit is reduced for miniaturization, then the device size is reduced, but the likelihood of collision increases
Solution Approach 1:
The determining unit continuously monitors camera shake amplitude and provides feedback to the controller. The controller uses this feedback to dynamically adjust the drive amount of the correction lens, ensuring that even with the reduced gap from miniaturization, the lens never reaches positions where inertia would cause collision with the lens barrel unit.
Solution Approach 2:
The system changes the control parameter (drive amount of correction lens) based on detected camera shake conditions. By adjusting the drive amount parameter according to predetermined limits, the system maintains reliable operation despite the physically constrained gap created by miniaturization.
3Stability of the object's composition
If the correction lens is driven to cancel shake, then image stability is improved, but collision sound may be generated causing user misconception of breakdown
Solution Approach 1:
The determining unit detects large camera shake before the correction lens is driven to extreme positions. The controller preemptively limits the drive amount to prevent the lens from reaching end positions where collision would occur, thereby preventing collision sound generation while still providing effective shake correction within safe boundaries.
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 effectively reduces the occurrence of collisions and subsequent user misconceptions about device failure, minimizing the risk of actual breakdowns by controlling the correction lens's movement based on detected shake amplitudes, ensuring reliable operation.
Implementation Method 1
When the correction lens is moved significantly for camera shake correction, due to the inertia of the correction lens, the correction lens may move beyond a control position
Data Source
AI summary
An imaging apparatus includes a correction lens correcting a shake of an image on an imaging device, a driver driving the correction lens, a detector detecting an amount of shake of the imaging apparatus, a determining unit determining, based on an amplitude of an output from the detector, whether the shake is within a normal range, and a controller controlling the driver based on a result of the determination. The controller controls the driver to drive the correction lens in a first mode when the shake is within the normal range, the first mode driving the correction lens according to a result of the detection, and to stop the correction lens or drive the correction lens in a second mode when the shake is out of the normal range of camera shake, the second mode suppressing an amount of movement of the correction lens more than for the first mode.