Structured Light Module Fastening Element Positioning
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Solution Overview
Problem
The existing structured light modules, particularly those with laser diodes in mobile electronic devices, face challenges in maintaining precise positioning and heat dissipation due to mechanical instability and complex assembly processes, leading to reduced efficiency over time and increased labor costs.
Innovation Solution
A structured light module with a fastening element that securely connects the laser diode or light-emitting unit to a frame, utilizing engaging parts and symbols for precise positioning and a heat dissipating plate for efficient thermal management, simplifying assembly and enhancing stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the laser diode is positioned through the circuit board, then the assembly process is simple, but the positioning stability deteriorates due to board upturning or shifting under impact and shock
Solution Approach 1:
The positioning function is segmented into two independent components: the circuit board provides electrical connection and basic mounting, while a separate dedicated positioning structure (such as a positioning hole or groove in the housing) provides precise mechanical positioning. This segmentation allows each component to optimize its function without compromising the other.
Solution Approach 2:
A dedicated positioning structure acts as an intermediary element between the circuit board and the housing. This intermediary component ensures that even when the circuit board shifts or upturns, the laser diode maintains its precise position through the intermediary positioning mechanism.
2Ease of manufacture
If the circuit board is not securely positioned, then the assembly process is simple, but the heat dissipation efficiency deteriorates due to deviated heat dissipation path
Solution Approach 1:
The heat dissipation function is segmented from the electrical connection function. A dedicated heat dissipation structure (such as a heat dissipation plate or thermal interface) is provided that is independently positioned and secured, ensuring that the heat dissipation path remains intact even when the circuit board position changes.
Solution Approach 2:
The housing is designed with a positioning structure that preemptively prevents circuit board shifting before it can affect heat dissipation. By providing mechanical constraints (positioning holes, grooves, or engagement features) in advance, the design ensures that the heat dissipation path remains aligned regardless of external impacts or vibrations.
3Reliability
If multiple laser sources and sensing elements are installed with high precision positioning, then the sensing efficiency is improved, but the assembling complexity and time increase
Solution Approach 1:
A universal positioning system is implemented that serves multiple functions simultaneously: it positions the circuit board, positions the laser diode, positions the lens, and provides heat dissipation alignment. This multi-functional positioning structure eliminates the need for separate positioning operations for each component.
Solution Approach 2:
The housing is pre-designed with integrated positioning features (positioning holes, grooves, or registration marks) that automatically align multiple components when the assembly is put together. This preliminary preparation of positioning structures allows rapid assembly without requiring time-consuming manual alignment of each laser source and sensing element.
Data Source
AI summary
A structured light module is combinable with a frame. The structured light module includes a housing, a light-emitting unit, at least one corresponding optical element, a circuit board, at least one fastening element, and at least one symbol. Due to the at least one symbol, the positioning accuracy of the structured light module in the assembling process is enhanced. The light-emitting unit is disposed on the circuit board and accommodated within the housing. The at least one fastening element is connected with one of the housing and the circuit board. When the at least one fastening element is combined with a frame, the structured light module is positioned on the frame.