Removable Lens Barrel with Orthogonal Shake Correction Axes
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Solution Overview
Problem
Existing camera systems with integral lens barrels and image pickup units are limited in their ability to correct a wide range of shake angles, particularly when the lens barrel is not permanently attached, as they rely on a single shake correction mechanism that cannot accommodate removable lenses effectively.
Innovation Solution
A camera system design that includes a removable lens barrel with a support unit moveable about two orthogonal axes, allowing for independent movement of the lens barrel relative to the camera body, incorporating pitch and yaw driving units to correct image shake, and a switching mechanism to adjust the movement range of the camera components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single shake correction mechanism is used in camera systems with removable lens barrels, then the device complexity is reduced, but the ability to correct a wide range of shake angles deteriorates
Solution Approach 1:
The shake correction mechanism is divided into two independent driving units: a first driving unit that rotates the lens barrel about a first axis orthogonal to the light axis, and a second driving unit that rotates the lens barrel about a second axis orthogonal to both the light axis and the first axis. This segmentation allows each unit to handle different axes of shake independently, providing comprehensive shake correction capability while maintaining manageable device complexity through modular design.
2Device complexity
If the lens barrel and image pickup unit are integrated, then the shake correction mechanism can be simplified, but the system cannot accommodate removable lenses effectively
Solution Approach 1:
The lens barrel is designed with a universal mounting structure that can be removeably mounted to different image pickup units, allowing the same lens barrel to function with multiple camera bodies. The mounting structure includes a mounting portion on the lens barrel and a corresponding mounting structure on the image pickup unit, enabling versatile attachment while maintaining a relatively simple lens barrel design that doesn't require integration with a specific image pickup unit.
3Adaptability or versatility
If a removable mounting structure is used between lens barrel and image pickup unit, then the adaptability is improved, but the reliability of connection deteriorates
Solution Approach 1:
The mounting structure employs a nested design where the mounting portion on the lens barrel fits within and connects to the mounting structure on the image pickup unit. This nested configuration provides a secure mechanical connection that maintains reliability while allowing the lens barrel to be removeably mounted. The nested structure ensures proper alignment and stable connection between the removable lens barrel and the camera body.
Data Source
AI summary
A lens barrel is removeably attachable to an image pickup unit, wherein a large amount of shake can be corrected. This lens barrel includes a mounting part that is removeably attachable to an image pickup unit, including: an image forming optical system that forms a subject image for the image pickup unit; a support unit that supports at least a portion of the image forming optical system; and a fixed unit that is disposed outside of the support unit and that is fixed to the mounting unit. The support part is relatively rotatable and moveable with respect to the fixed unit, about at least two axes which are substantially orthogonal to the light axis of the image forming optical system.