Optical Module Lens Alignment Using Minimum Light Spot Size
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Solution Overview
Problem
The challenge in assembling optical modules lies in accurately adjusting lenses to their most reasonable position based on the size of the imaging light spot, which affects the optical performance.
Innovation Solution
An apparatus and method that involve controlling an alignment mechanism to move in a preset direction and collect light spots, selecting the light spot with the minimum size to determine the optimal position for lens alignment, and adjusting the lens accordingly to improve alignment accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the alignment mechanism constantly adjusts the lens position based on imaging light spot analysis, then the lens alignment accuracy is improved, but the assembling time and process complexity increase
Solution Approach 1:
The system uses the optical module's own imaging function to generate light spots that automatically indicate alignment quality. The imaging sensor and control mechanism work together to self-adjust the lens position without requiring external intervention or complex measurement equipment, thereby improving alignment accuracy while maintaining efficient assembly timing.
Solution Approach 2:
The system continuously monitors the size of imaging light spots and uses this feedback to automatically adjust the lens position. When the light spot size indicates misalignment, the control mechanism triggers position adjustments until optimal alignment is achieved, balancing precision with assembly speed through automated feedback loops.
2Manufacturing precision
If the alignment mechanism constantly adjusts the lens position based on imaging light spot analysis, then the lens alignment accuracy is improved, but the process complexity increases
Solution Approach 1:
The optical module's inherent imaging capability is utilized to generate alignment indicators (light spots). The system leverages the module's own optical path and imaging sensor to create a self-contained alignment measurement mechanism, avoiding the need for separate complex measurement and adjustment equipment.
Solution Approach 2:
The imaging sensor serves multiple functions: it captures the final optical image quality and simultaneously generates light spot patterns for alignment measurement. The alignment mechanism integrates both measurement and adjustment functions, reducing the need for separate dedicated alignment equipment and simplifying the overall process.
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 approach simplifies the lens alignment process by turning the search for the optimal position into finding the smallest light spot, thereby reducing alignment difficulties and enhancing the accuracy of optical module assembly.
Implementation Method 1
an optical module to be aligned generates an image
Data Source
AI summary
An apparatus and a method for assembling optical module is provided and the method includes: controlling an alignment mechanism holding a to-be-assembled lens to move at a preset step-size in a preset direction when an optical module to be aligned generates an image; collecting light spots of the images generated by an optical module to be aligned sequentially by an image collecting means, each time the alignment mechanism moves; selecting a light spot with a minimum size from the collected light spots, and determining a movement position of the alignment mechanism when the light spot with the minimum size is collected, as an optimal position; controlling the alignment mechanism to move to the optimal position to align the to-be-assembled lens.