Nested Lens Set Movement for Compact Zoom and Focus
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Solution Overview
Problem
Existing miniature lens devices in handheld electronic devices face challenges with lens zooming methods that cause resolution drop and require large lens barrels, increasing device size and complexity due to limited movement and interference between lens sets.
Innovation Solution
A lens device and moving mechanism that allows lens sets to move without interference by using stages with specific geometric shapes and moving spaces, enabling close proximity without collision, and utilizing electromagnetic modules for smooth movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional zooming lens structure is used with lens barrels, then lens sets can be moved for zooming and focusing, but the lens barrel length becomes much larger than lens set thickness (2-3 times), increasing overall device size
Solution Approach 1:
The patent implements a nested structure where the first lens barrel is sleeved on the second lens barrel, allowing both lens sets to move independently within a compact configuration. This nesting enables the inner lens barrel to pass through the peripheral space of the outer lens barrel, achieving close proximity between lens sets without requiring long individual barrels.
Solution Approach 2:
The patent transitions from linear arrangement to three-dimensional spatial utilization by allowing the inner lens barrel to move through the peripheral space of the outer lens barrel. This dimensional change enables the lens sets to approach each other closely (distance close to zero) while maintaining stable movement, effectively reducing the overall lens length.
2Length of stationary object
If lens sets are positioned close together to reduce lens length, then device size is reduced, but lens sets may collide during movement
Solution Approach 1:
The nested lens barrel structure allows the inner lens barrel to move through the peripheral space of the outer lens barrel, creating a clear separation path that prevents collision between lens sets even when they are positioned very close together.
Solution Approach 2:
The patent divides the lens barrel system into independent segments (first lens barrel and second lens barrel) that can move separately along their respective tracks. This segmentation allows each lens set to move independently without interfering with the other, ensuring stable movement and preventing collision.
3Manufacturing precision
If lens barrel length is increased to prevent lens set shaking and maintain optical axis accuracy, then optical stability is improved, but device volume increases
Solution Approach 1:
The patent utilizes three-dimensional space by allowing lens barrels to move through peripheral spaces rather than requiring long linear barrels. The inner lens barrel passes through the outer lens barrel's peripheral area, enabling stable optical axis maintenance with significantly reduced overall length.
Solution Approach 2:
The patent implements dynamic movement control where lens sets move along predefined tracks with electromagnetic modules providing precise control. This dynamic system maintains optical axis accuracy during movement without requiring excessively long static barrel structures.
Data Source
AI summary
A lens device includes a housing; a first lens set having a first end and a second end, wherein the first end is fixed on one of the housing and a first stage, and a moving space is formed between the second end and the housing; a second stage disposed on the housing, and slidable in the moving space; and a second lens set disposed on the second stage, and configured to perform a focusing function of the lens device.