Lens Barrel Eccentricity and Inclination Regulation Mechanism
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Solution Overview
Problem
Existing image pickup apparatuses face challenges in miniaturization and simplification of the regulating mechanism due to the separate placement of eccentricity and inclination regulating members, leading to increased space occupation and complex regulating work.
Innovation Solution
A lens barrel design where the eccentricity regulating member is supported by the inclination regulating member, both being disposed in the same space, with the inclination regulating member rotatably supported by the mounting member and the eccentricity regulating member rotatably supported by the inclination regulating member, allowing for simultaneous regulation of lens inclination and eccentricity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the first regulating member and the second regulating member are independently disposed in different positions on the outer circumference side of the lens holding frame, then the inclination regulation and eccentricity regulation can be performed separately, but the regulating mechanism occupies a large space in the circumference direction
Solution Approach 1:
The patent merges the first regulating member (for eccentricity regulation) and the second regulating member (for inclination regulation) into a single integrated regulating member. This regulating member has a first regulating portion and a second regulating portion that can be disposed at different positions on the lens holding frame, allowing both eccentricity and inclination regulations to be performed by a single member rather than requiring two separate members disposed at different locations.
Solution Approach 2:
The patent applies the nesting principle by having the first regulating portion and the second regulating portion nested within the same regulating member structure. The first regulating portion is configured to regulate eccentricity while the second regulating portion regulates inclination, and both are integrated into a single member that can be disposed at one location on the lens holding frame, effectively nesting multiple regulatory functions within a single component.
2Manufacturing precision
If the first regulating member and the second regulating member are disposed in different positions, then each can perform its specific regulation function, but the regulating work becomes complicated
Solution Approach 1:
The patent combines multiple regulating functions into a single integrated regulating member, reducing the number of separate components and their associated mounting, alignment, and adjustment procedures. This merger simplifies the overall regulating mechanism while maintaining the capability to perform both eccentricity and inclination regulations with high precision.
Solution Approach 2:
The regulating member is designed with multi-functionality, where a single member performs both eccentricity regulation (through the first regulating portion) and inclination regulation (through the second regulating portion). This universal design reduces the complexity of having multiple specialized members while maintaining the precision required for both types of optical regulation.
Data Source
AI summary
A lens barrel includes: a lens holding frame holding a lens; a mounting member to which the lens holding frame is mounted; an inclination regulating member regulating a position of the lens holding frame with respect to the mounting member, thereby regulating inclination of the lens holding frame with respect to an optical axis; and an eccentricity regulating member regulating the position of the lens holding frame with respect to said mounting member, thereby regulating eccentricity of the lens holding frame with respect to the optical axis, in which the eccentricity regulating member is supported by said inclination regulating member.