Lens Barrel Dual-Engagement Alignment for Shake Correction
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Solution Overview
Problem
Existing camera systems face challenges in efficiently attaching and detaching lens barrels from camera bodies while maintaining effective shake correction mechanisms, particularly in ensuring accurate alignment and preventing looseness during use.
Innovation Solution
The camera system incorporates a dual-barrel design with engagement units for secure attachment and detachment, along with a shake correction mechanism that includes pitch and yaw drive units, shake detection, and alignment mechanisms to ensure accurate coupling and prevent looseness, utilizing coupling sensing units for proper engagement verification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a lens barrel is designed to be attachable and detachable from a camera body, then interchangeability and versatility are improved, but alignment accuracy and connection reliability may deteriorate
Solution Approach 1:
The patent introduces a camera body mount as an intermediary component between the lens barrel and camera body. The mount includes a mount body with a reference surface that provides a fixed reference for alignment, and a lens holding portion that securely holds the lens barrel. This intermediary structure ensures precise alignment and reliable connection while maintaining lens interchangeability.
Solution Approach 2:
The patent replaces complex mechanical alignment mechanisms with a reference surface-based alignment system. The mount body includes a reference surface that directly contacts the lens barrel's reference surface, providing automatic alignment without requiring complex mechanical adjustment mechanisms. This simplifies the system while maintaining high alignment accuracy.
2Reliability
If a shake correction mechanism with swingable lens barrel is implemented, then shake correction capability is improved, but device complexity increases
Solution Approach 1:
The patent divides the lens barrel system into two independent parts: the lens barrel assembly and the camera body mount. The lens barrel can swing independently relative to the mount, allowing shake correction functionality to be implemented in the lens barrel without complicating the camera body structure. This segmentation isolates the complexity to only the necessary component.
Solution Approach 2:
The lens barrel is designed to serve multiple functions: it acts as both the optical system housing and the shake correction mechanism carrier. The same lens barrel that holds the optical elements also contains the swing mechanism for shake correction, eliminating the need for separate shake correction components and reducing overall system complexity.
3Reliability
If engagement units are added for secure attachment, then connection reliability is improved, but ease of operation deteriorates
Solution Approach 1:
The patent designs the engagement units to automatically engage when the lens barrel is mounted on the camera body. The lens barrel's reference surface automatically aligns with and contacts the mount's reference surface, and the engagement units (such as bayonet mounts or screw mounts) self-lock into place without requiring additional manual operations. This maintains ease of operation while ensuring reliable connection.
Data Source
AI summary
A camera system and a lens barrel capable of improving practicality and convenience by enabling smooth lens exchange in a lens-interchangeable camera having a vibration correction mechanism that integrally drives a lens barrel and an image capturing unit. A lens barrel to which a camera body can be detachably attached, the lens barrel including: a first barrel having a first engaging portion that engages with a first portion of the camera body; and a second barrel disposed inside the first barrel and having an optical system and a second engaging portion that engages with a second portion of the camera body.