Optical Module Lens Alignment Using Prism Feedback Assembly
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Solution Overview
Problem
Existing methods for actively aligning lenses in optical modules are inefficient, which affects the optical performance and assembly efficiency of these modules.
Innovation Solution
An apparatus and method that utilize a spectroscopic prism, image collecting means, and a controller to align lenses by collecting and analyzing light spots, generating alignment instructions for an alignment mechanism to adjust the position of unaligned lenses, and a dispensing mechanism to apply UV glue for assembly, improving the efficiency of the alignment process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If active alignment method is used to align lenses by collecting and analyzing light spots, then manufacturing precision is improved, but productivity deteriorates due to low assembly efficiency
Solution Approach 1:
The patent divides the alignment process into discrete steps: light spot collection by image sensors, analysis by control unit, and adjustment by alignment mechanism. This segmentation allows for automated control while maintaining precision, resolving the contradiction between precision and efficiency
Solution Approach 2:
The patent implements a feedback loop where light spots are collected, analyzed, and used to generate adjustment instructions that are fed back to the alignment mechanism. This closed-loop feedback system maintains manufacturing precision while enabling automated high-speed operation, thereby improving productivity
2Productivity
If multiple optical modules are assembled simultaneously, then productivity is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple image collectors, alignment mechanisms, and optical modules into an integrated assembly system. By merging these components into a coordinated multi-module system, the patent achieves simultaneous assembly of multiple modules while managing complexity through integrated control
Solution Approach 2:
The patent designs the alignment mechanism and control system to handle multiple optical modules with the same alignment requirements using universal components. The image collectors and alignment mechanisms can service multiple modules, reducing overall system complexity while maintaining high productivity
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 significantly enhances the efficiency of assembling optical modules by accurately aligning lenses in three axes, improving the optical performance and reducing assembly time for multiple modules simultaneously.
Implementation Method 1
a spectroscopic prism with a light incident surface close to the plurality of optical modules to be aligned, a first image collecting means close to a first light emitting surface of the spectroscopic prism and being coaxial with the first light emitting surface, and a second image collecting means with a second light emitting surface of the spectroscopic prism and being coaxial with the second light emitting surface
Implementation Method 2
a UV lamp electrically connected to the controller; the UV lamp is configured to perform irradiation on the UV glue according to an irradiation instruction of the controller
Data Source
AI summary
An apparatus and a method for assembling optical module. The apparatus includes: a plurality of fixtures, an alignment mechanism, a power supply, a spectroscopic prism with a light incident surface close to the plurality of optical modules to be aligned, a first image collecting unit close to a first light emitting surface of the spectroscopic prism and a second image collecting unit with a second light emitting surface of the spectroscopic prism; the controller is configured to determine a light spot that does not meet a quality requirement according to the positions and/or sizes of the plurality of imaging light spots, and generate a corresponding aligning instruction, and determine a to-be-assembled lens corresponding to the light spot that does not meet requirements according to a correspondence between a to-be-assembled lens and the light spot, and output the aligning instruction to an alignment mechanism to adjust a position of the lens.