Lens Barrel Aperture Mechanism Integration
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Solution Overview
Problem
Conventional lens barrels are bulky and heavy, lacking the desired thinness and lightness.
Innovation Solution
The lens barrel design incorporates a lens holding frame, a driving part, aperture blades with engaging parts, a first member that rotates around the optical axis, and a second member with aperture blades arranged between them, allowing for a compact and lightweight structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If a conventional lens barrel structure with separate base members is used, then the structural stability is maintained, but the lens barrel becomes bulky and heavy
Solution Approach 1:
The patent merges the base member and the unit-two lens holding frame into a single integrated structure. The driving part and detecting part are directly mounted on the unit-two lens holding frame, eliminating the need for a separate base member. This integration reduces the overall number of components, decreases weight, and simplifies the lens barrel structure while maintaining structural stability.
Solution Approach 2:
The unit-two lens holding frame is designed to serve multiple functions: it holds the unit-two lens, provides mounting surfaces for the driving part and detecting part, and acts as a structural support element. This multi-functionality eliminates the need for separate base members and reduces the overall component count, achieving both weight reduction and structural integrity.
2Length of moving object
If additional base members are used to mount the driving part and detecting part, then the mounting stability is improved, but the lens barrel thickness increases
Solution Approach 1:
By integrating the mounting functions directly into the unit-two lens holding frame, the patent eliminates the need for additional base members that would increase lens barrel thickness. The driving part and detecting part are mounted directly on the holding frame, reducing the overall length/thickness of the lens barrel while maintaining mounting stability through direct attachment.
3Productivity
If multiple separate components are used for the aperture mechanism, then the functional reliability is improved, but the manufacturing efficiency decreases
Solution Approach 1:
The aperture blades are integrated with the first member and second member in a unified structure. The first member rotates around the optical axis while the second member holds the aperture blades between it and the first member. This integrated design reduces the number of separate components, simplifies assembly, and improves manufacturing efficiency while maintaining the functional reliability of the aperture mechanism through proper engagement structures.
Data Source
AI summary
A lens barrel, that can be made thinner, has a lens holding frame that holds a lens; a driving part that is held by the lens holding frame; aperture blades including a first engaging part and a second engaging part; a first member that engages with the first engaging part and can be rotated around an optical axis by the driving part; and a second member that engages with the second engaging part and is provided with the aperture blade arranged between the second member and the first member.