Interchangeable Lens Image Stabilization Adaptation
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Solution Overview
Problem
Existing image stabilization methods in camera systems are ineffective when the camera body lacks a translational image-stabilizing function, and when an interchangeable lens with no translational image-stabilizing function is attached to a camera body without this feature, as they fail to properly address angular and translational shakes.
Innovation Solution
A lens apparatus with a detector for angular shake detection, an image stabilizer for correcting image stabilization by driving parts of the imaging optical system, and a controller that calculates driving amounts based on rotation angles and adjusts settings according to the attached camera body, enabling proper image stabilization regardless of the camera body's translational image-stabilizing function.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the image stabilizing function is activated only when the camera body has the image stabilizing function, then the camera body's stabilization system can be used, but the interchangeable lens's image stabilizing function cannot be effectively utilized
Solution Approach 1:
The patent implements dynamic activation of the interchangeable lens's image stabilizing function based on the camera body's capabilities. The control unit determines whether to activate the lens's image stabilizer by detecting the presence or absence of the camera body's image stabilizing function, allowing the system to adaptively switch between different stabilization modes (lens-only, camera-only, or combined) to ensure effective image stabilization in all configurations
Solution Approach 2:
The patent creates a universal image stabilizing system that works effectively regardless of the camera body's capabilities. By designing the interchangeable lens with its own independent image stabilizing function that can operate in conjunction with or independently of the camera body's stabilization system, the system achieves multi-functionality and ensures reliable image stabilization whether the camera body has the function or not
2Adaptability or versatility
If the camera body provides translational image stabilization and the interchangeable lens provides angular image stabilization, then both stabilization types can be combined, but proper stabilization cannot be achieved when neither has translational image-stabilizing function
Solution Approach 1:
The patent changes the operational parameters of the image stabilizing system based on the camera body's capabilities. When the camera body has translational image stabilization, the system operates in a mode where both translational (camera) and angular (lens) stabilizations are active. When the camera body lacks translational stabilization, the system adjusts by activating the lens's image stabilizer to compensate for both translational and angular shakes, effectively changing the stabilization parameters to match the available hardware
3Device complexity
If the interchangeable lens has no translational image-stabilizing function, then the lens structure is simpler, but the influence of translational shake cannot be removed when attached to a camera body without translational image-stabilizing function
Solution Approach 1:
The patent implements a self-service mechanism where the interchangeable lens autonomously determines its stabilization operation mode by detecting the camera body's capabilities. The control unit in the lens automatically adjusts the image stabilizing function's activation state based on whether the camera body has image stabilization, allowing the lens to self-adjust its complexity of operation without requiring manual intervention or complex mechanical structures
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
The solution ensures effective image stabilization in both cases, whether the camera body has a translational image-stabilizing function or not, by dynamically adjusting the image stabilization sensitivity and using both lens and image sensor stabilizers to correct for angular and translational shakes.
Implementation Method 1
a detector configured to detect an angular shake of the lens apparatus
Implementation Method 2
an image stabilizer configured to provide an image stabilization by driving part of an imaging optical system in the lens apparatus
Data Source
AI summary
A lens apparatus attachable to and detachable from an image pickup apparatus includes a detector configured to detect an angular shake of the lens apparatus, an image stabilizer configured to provide an image stabilization by driving part of an imaging optical system in the lens apparatus, and a controller configured to calculate a driving amount using a rotation angle based on an output of the detector and information for converting the rotation angle into the driving amount. The controller changes the information based on the image pickup apparatus attached to the lens apparatus.