Dual Optical Path Lens Assembly for Precise Laser Spot Regulation
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Solution Overview
Problem
Laser welding and cutting technologies face limitations in precision control due to the regulation of the light spot size after laser beam rotation being performed in only one manner, leading to reduced control precision and increased operation amounts or polishing requirements.
Innovation Solution
A lens assembly with a first and second optical path offset assembly, a drive mechanism, an elastic seal ring, and a locking mechanism, which allows for relative rotation between the assemblies to uniformly distribute energy and adjust the light spot size, enhancing precision and regulation range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the light spot size is regulated only by changing the size of the light spot before rotation, then the structure is simple, but the control precision is reduced
Solution Approach 1:
The optical path offset assembly is divided into a first optical path offset assembly and a second optical path offset assembly with independent rotation capabilities. Each assembly can be rotated independently around the central axis, allowing separate control of light spot positioning and size regulation, thereby improving control precision without excessive complexity
Solution Approach 2:
The optical path offset assemblies are designed to be rotatable rather than fixed, enabling dynamic adjustment of the light spot position and size. The rotation mechanism allows real-time control of the light spot parameters during laser welding or cutting operations, enhancing precision control
2Manufacturing precision
If a single optical path offset assembly is used, then the device is simple, but the regulation range and precision are limited
Solution Approach 1:
The system uses two optical path offset assemblies instead of one, with each assembly contributing to the overall light spot control. The first assembly handles primary positioning while the second assembly provides fine adjustment, dividing the control function into segments that together achieve high precision
Solution Approach 2:
The dual optical path offset assemblies enable control in multiple dimensions - both the position and size of the light spot can be independently adjusted by rotating the respective assemblies, adding a dimension of control that single assembly systems cannot provide
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
The solution improves the precision and range of light spot regulation, reducing the need for additional polishing processes and increasing the efficiency of laser welding and cutting operations.
Implementation Method 1
The elastic seal ring is pressed between the first optical path offset assembly and the second optical path offset assembly and is configured to drive the second optical path offset assembly to rotate together with the first optical path offset assembly when the first optical path offset assembly rotates
Data Source
AI summary
Provided is a lens assembly. The lens assembly includes a first optical path offset assembly (33), a second optical path offset assembly (34), a drive mechanism, an elastic seal ring (35) and a locking mechanism (37). The optical path of the first optical path offset assembly and the optical path of the second optical path offset assembly communicate with each other. The first optical path offset assembly and the second optical path offset assembly are each rotatable about the central axis of the lens assembly (3). The drive mechanism is configured to drive the first optical path offset assembly to rotate about the central axis. The elastic seal ring is configured to make the first optical path offset assembly and the second optical path offset assembly rotate together. The locking mechanism is pressed against the first optical path offset assembly or the second optical path offset assembly to enable the first optical path offset assembly and the second optical path offset assembly to rotate relative to each other. The lens assembly enables an offset laser beam to be further offset or be rectified, and thereby the size of a light spot can be regulated in a more diversified manner and with a higher precision. Also provided is a laser welding head. The laser welding head includes the preceding lens assembly.