Lens Barrel Circumferential Driver Arrangement
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Solution Overview
Problem
The existing lens barrel designs with non-optical components result in a larger outer diameter due to the increased number of components, which is inefficient in terms of space utilization and component placement.
Innovation Solution
The design incorporates a lens assembly with a first and second lens holder, guiding shafts, and drivers arranged in a specific circumferential order, along with a retractable portion and retraction driver, allowing for efficient use of space by positioning non-optical components in defined spaces orthogonal to the optical axis, thereby maintaining a compact diameter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If non-optical components are positioned away from the optical path, then optical performance is maintained, but the outer diameter of the lens barrel increases
Solution Approach 1:
The patent transitions from a conventional linear arrangement of components to a three-dimensional circumferential distribution around the optical axis. Drivers and guiding shafts are positioned at different circumferential positions (0°, 90°, 180°, 270°) rather than being stacked linearly, effectively utilizing the radial dimension to reduce the overall outer diameter while maintaining component separation from the optical path.
Solution Approach 2:
The patent implements a nested structure where the retractable portion is positioned within the lens assembly, and drivers are arranged within the spaces between guiding shafts. The retraction driver is positioned in the space between the first driver and the second driver, creating a compact nested arrangement that maximizes space utilization without increasing the outer diameter.
2Ease of operation
If multiple drivers and guiding shafts are arranged in the lens assembly, then lens holder control is improved, but space utilization becomes inefficient
Solution Approach 1:
The patent divides the lens assembly into multiple independent control units, with each lens holder having its own dedicated driver and guiding shaft. The first lens holder is controlled by the first driver through the first guiding shaft, and the second lens holder is controlled by the second driver through the second guiding shaft. This segmentation allows for independent control of each lens holder while maintaining efficient space utilization through circumferential arrangement.
Solution Approach 2:
The patent utilizes the circumferential dimension around the optical axis to arrange multiple drivers and guiding shafts. By positioning components at different circumferential angles rather than stacking them radially, the design achieves efficient three-dimensional space utilization that accommodates multiple control units without increasing the overall volume.
3Area of stationary object
If the lens barrel outer diameter is reduced, then compactness is improved, but component placement becomes more difficult
Solution Approach 1:
The patent employs asymmetric positioning of components around the optical axis, with drivers and guiding shafts arranged at specific circumferential positions rather than in symmetric patterns. This asymmetric arrangement optimizes the available space within the compact lens barrel, allowing for efficient component placement that would be difficult with conventional symmetric designs.
Solution Approach 2:
The patent transitions from two-dimensional planar component placement to three-dimensional circumferential distribution. By utilizing the circumferential dimension around the optical axis, the design achieves compact component placement that maximizes space utilization within the reduced outer diameter while maintaining ease of manufacture through systematic positioning.
Data Source
AI summary
A lens assembly includes a first lens holder that holds a first lens, a first guiding shaft that guides the first lens holder in a parallel direction to an optical axis of the first lens, a first driver that drives the first lens holder in an axial direction of the first guiding shaft, a second lens holder that holds a second lens that is different from the first lens, and a second driver that drives the second lens holder in a direction of the optical axis. Here, the first guiding shaft, the second driver, and the first driver are arranged in the stated order in a circumferential direction of a circle that is centered on the optical axis.