Lens Barrel Threaded Adjustment for Independent Lens Replacement
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Solution Overview
Problem
The existing active alignment focusing method for lens devices fixes the lens and support base together, leading to increased costs when focus failure or damage occurs, as the entire lens must be discarded.
Innovation Solution
A lens device comprising a hollow base, calibration ring, and lens assembly, where the lens barrel is screwed to the calibration ring with an external thread, allowing for adjustment and fixation using a curing adhesive layer, enabling the lens assembly to be rotated and replaced without discarding the entire device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the lens and support base are fixed together using active alignment focusing method, then the lens can be securely mounted and focused, but the entire lens must be discarded when focus failure or damage occurs, increasing cost
Solution Approach 1:
The lens device is divided into separable components: the support base, the calibration ring, and the lens assembly. The lens assembly can be detached from the calibration ring through the threaded connection, allowing the lens to be replaced independently without discarding the support base or calibration ring. This segmentation resolves the contradiction by enabling selective replacement of only the damaged lens portion while retaining functional components.
Solution Approach 2:
The threaded connection between the lens barrel and calibration ring provides a dynamic mounting mechanism that allows for both secure fixation during operation and controlled detachment for replacement. The calibration ring can be adjusted to calibrated positions and fixed using curing adhesive layer, but the lens assembly remains可拆卸 (detachable) through the external thread and internal thread interface, enabling flexible maintenance without permanent fixation.
2Loss of substance
If the lens assembly is made detachable from the calibration ring, then the lens can be replaced independently reducing cost, but the focusing precision and stability may be compromised
Solution Approach 1:
The calibration ring is pre-adjusted to a calibrated position before the lens assembly is installed. The threaded connection is designed with precise pitch and depth to ensure accurate positioning. The curing adhesive layer is applied in advance to fix the calibration ring to the support base, creating a stable foundation. These preliminary actions ensure that when the lens assembly is installed and focused, the focus precision is maintained despite the detachable nature of the connection.
Solution Approach 2:
The calibration ring serves as an intermediary component between the support base and the lens assembly. It provides a precise mounting interface with internal threads that match the external threads of the lens barrel. The calibration ring can be adjusted to calibrated positions and fixed using curing adhesive layer, but the lens assembly remains可拆卸 (detachable) through the external thread and internal thread interface, enabling flexible maintenance without permanent fixation.
3Ease of repair
If a threaded connection is used between lens barrel and calibration ring, then the lens assembly can be adjusted and replaced, but the device complexity increases
Solution Approach 1:
The calibration ring combines multiple functions into a single component: it provides the threaded connection interface for the lens assembly, serves as a mounting platform for the curing adhesive layer, and acts as a positioning element for the lens. By merging the connection mechanism and positioning function into one integrated component, the overall device complexity is minimized while still enabling easy lens replacement through the threaded interface.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution allows for adjustable focus without discarding the lens device, reducing costs by enabling the lens assembly to be rotated and replaced independently, maintaining image quality and extending the device's lifespan.
Implementation Method 1
The second annular surface is fixed on the assembly plane of the hollow base via a curing adhesive layer
Implementation Method 2
The lens barrel has an external thread. The lens barrel is screwed to the internal thread of the calibration ring by the external thread
Data Source
AI summary
A lens device includes a hollow base, a calibration ring, and a lens assembly. The hollow base includes a bottom surface and an assembly plane opposite to the bottom surface. The assembly plane has a through hole. The calibration ring includes a shaft hole, a first annular surface, and a second annular surface axially opposite to the first annular surface. An inner wall of the shaft hole has an internal thread. The shaft hole corresponds to the through hole of the hollow base. The second annular surface is fixed on the assembly plane of the hollow base via a curing adhesive layer. The lens assembly includes a lens barrel. The lens barrel has an external thread. The lens barrel is screwed to the internal thread of the calibration ring by the external thread.