Lens Device Base Protrusions Eliminate Mechanical Stops
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Solution Overview
Problem
Conventional lens devices for digital cameras face challenges in reducing volume while maintaining structure strength, often requiring additional mechanical stops that increase size and complexity.
Innovation Solution
A lens device design featuring a fixed lens with cam grooves and a rotatable lens barrel with cam followers, eliminating the need for additional mechanical stops by using protruding structures on the base to limit the rotatable lens barrel's position, allowing for simpler assembly and reduced components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If additional mechanical stops are added to limit the rotatable lens barrel position, then the lens device structure strength is improved, but the device volume increases and structure complexity increases
Solution Approach 1:
The patent merges the mechanical stop function with the base structure by adding protruding structures directly to the base. This integration eliminates the need for separate mechanical stop components, reducing overall device volume while maintaining the position-limiting function and structure strength.
Solution Approach 2:
The base structure is designed to serve multiple functions: it provides structural support, housing for components, and position-limiting features through its protruding structures. This multi-functionality reduces the need for additional dedicated components, thereby reducing device volume and complexity.
2Strength
If additional mechanical stops are added to limit the rotatable lens barrel position, then the lens device structure strength is improved, but the device complexity increases
Solution Approach 1:
The patent merges the mechanical stop function with the base structure by adding protruding structures directly to the base. This integration eliminates the need for separate mechanical stop components, reducing overall device volume while maintaining the position-limiting function and structure strength.
Solution Approach 2:
The base structure is designed to serve multiple functions: it provides structural support, housing for components, and position-limiting features through its protruding structures. This multi-functionality reduces the need for additional dedicated components, thereby reducing device volume and complexity.
3Ease of manufacture
If the lens device is designed with fewer components, then the assembly ease is improved and cost is reduced, but the structure strength may be compromised
Solution Approach 1:
The patent merges the mechanical stop function with the base structure by adding protruding structures directly to the base. This integration eliminates the need for separate mechanical stop components, reducing overall device volume while maintaining the position-limiting function and structure strength.
Solution Approach 2:
The base is designed with integrated protruding structures that are formed as part of the base molding process. This segmentation approach allows the position-limiting features to be built-in rather than added as separate components, simplifying assembly while maintaining structural integrity.
Data Source
AI summary
A lens device includes a fixed lens, a rotatable lens barrel, and a base. The fixed lens includes at least one cam groove which has an opening portion. The rotatable lens barrel is sleeved within the fixed lens. The rotatable lens barrel includes at least one cam follower. The cam follower enters the cam groove through the opening portion and moves along the cam groove. The base is assembled to the fixed lens. The base includes at least one protruding structure. The protruding structure extends to the cam groove through the opening portion.