Lens Barrel Independent Orthogonal Adjustment Mechanism
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Solution Overview
Problem
Existing lens units face challenges in achieving independent optical adjustments for multiple lenses without increasing the overall size of the device, as previous solutions either lack configurations for independent adjustments or result in larger device sizes due to the placement of adjustment mechanisms.
Innovation Solution
A lens unit design that includes a holding frame, two adjustment frames for independent lens adjustments, and fixing parts that are arranged to avoid overlap, allowing for independent optical adjustments of multiple lenses within a compact structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple adjustment mechanisms are provided for independent optical adjustment of multiple lenses, then optical performance is improved, but the lens frame size increases
Solution Approach 1:
The patent utilizes the optical axis direction as an additional dimension to arrange adjustment mechanisms. The first adjustment mechanism is positioned on the object side of the holding frame, while the second adjustment mechanism is positioned on the image side, allowing both mechanisms to operate independently without increasing the radial size of the lens frame.
Solution Approach 2:
The patent divides the adjustment mechanisms into separate, independent units positioned at different locations. Each adjustment mechanism is independently adjustable, allowing for precise optical alignment of individual lenses without requiring a single large adjustment structure.
2Area of stationary object
If multiple adjustment mechanisms are positioned close to each other, then device size is reduced, but the adjustment mechanisms interfere with each other
Solution Approach 1:
The patent resolves interference between adjustment mechanisms by positioning them in different locations along the optical axis. The first adjustment mechanism operates on the object side of the holding frame, while the second operates on the image side, ensuring sufficient spatial separation to prevent mechanical interference while maintaining a compact overall device size.
3Device complexity
If a single adjustment mechanism is used for multiple lenses, then device complexity is reduced, but independent optical adjustment capability is lost
Solution Approach 1:
The patent implements separate adjustment mechanisms for different lenses, with the first adjustment mechanism dedicated to adjusting the first lens and the second adjustment mechanism dedicated to adjusting the second lens. This segmentation enables independent optical adjustment of each lens, ensuring high manufacturing precision while maintaining manageable device complexity through modular design.
Data Source
AI summary
A second lens unit has a second lens holding frame that holds a reference lens among a plurality of lenses, a first adjustment frame that holds a first adjustment lens among the plurality of lenses and is adjustable in a direction orthogonal to an optical axis with respect to the second lens holding frame, and a second adjustment frame that holds a second adjustment lens among the plurality of lenses and is adjustable in the direction orthogonal to the optical axis with respect to the second lens holding frame. The first adjustment frame is arranged on the object side in the optical axis direction with respect to the second lens holding frame. The second adjustment frame is arranged on the image side in the optical axis direction with respect to the second lens holding frame.