Laser Sub-Mount Cooling Structure for Stable Precision Irradiation
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Solution Overview
Problem
Existing laser irradiation apparatuses face challenges with heat dissipation, leading to fluctuations in laser element performance and instability.
Innovation Solution
The apparatus incorporates a sub-mount with insulating properties and a heat radiation unit on the opposite surface, along with a moving mechanism to change the relative position of the laser element and the irradiation target, facilitating efficient heat dissipation through a conductive heat radiation unit and multiple fins.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a laser element is used to emit laser light for processing or recording, then high precision and high speed performance is achieved, but heat accumulation occurs causing performance fluctuations and instability
Solution Approach 1:
The patent extracts the heat dissipation function from the laser element assembly by providing a dedicated heat radiation unit coupled to the back surface of the laser element. This separate heat extraction mechanism allows the laser element to maintain stable operating temperature without compromising its light emission function, thereby resolving the contradiction between high precision performance and heat accumulation.
Solution Approach 2:
The patent introduces an intermediary heat radiation unit that acts as a mediator between the laser element and the surrounding environment. This heat radiation unit receives heat from the laser element through thermal coupling and dissipates it to the atmosphere, serving as an intermediate heat transfer path that protects the laser element from direct heat accumulation while maintaining its high precision operation.
2Productivity
If the laser element operates continuously for high productivity, then output increases, but heat dissipation becomes insufficient leading to instability
Solution Approach 1:
The patent implements preliminary heat dissipation action by providing a heat radiation unit that is pre-positioned and thermally coupled to the back surface of the laser element before operation begins. This preliminary heat extraction capability ensures that even during continuous high-productivity operation, heat is continuously removed from the laser element, maintaining operation stability and preventing thermal-induced failures.
3Reliability
If heat radiation is enhanced to improve stability, then temperature control improves, but device complexity increases
Solution Approach 1:
The patent merges the heat radiation function with the existing laser element structure by providing a heat radiation unit that is coupled to the back surface of the laser element. This integrated approach combines the light emission function of the laser element with the heat dissipation function of the heat radiation unit into a single compact assembly, achieving improved temperature control without significantly increasing overall device complexity.
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 configuration stabilizes laser element operation by reducing heat-induced fluctuations and improves heat dissipation, ensuring stable performance and accurate processing or recording.
Implementation Method 1
a heat radiation unit provided to the second surface... ensures stable performance through efficient heat dissipation
Implementation Method 2
heat radiation unit... improving heat dissipation
Data Source
AI summary
A laser irradiation apparatus includes a sub-mount including a first surface and a second surface opposite to the first surface, a laser element being provided to the first surface and configured to emit laser light, a heat radiation unit being provided to the second surface, and a moving mechanism configured to change a relative position of the laser element and an irradiation target object.