Laser Light Source Module Layout for Moisture-Proof Space Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing light source modules with multiple lasers face challenges in moisture-proof sealing due to large moisture-proof spaces, leading to increased pressure fluctuations and water vapor retention, necessitating a reduction in sealed volume.
Innovation Solution
The light source module is divided into two cases: one housing a single laser with an electronic cooling module and another housing multiple lasers, with the latter having a moisture-permeable portion and the former being highly airtight, along with a dichroic mirror and heat sinks to manage heat and moisture effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the entire light source module including three lasers is housed in a single enclosed housing to seal against moisture, then moisture-proof sealing is improved, but the volume of the moisture-proof space becomes large, causing large pressure fluctuations and water vapor retention
Solution Approach 1:
The light source module is divided into two separate cases: a first case housing the red laser with electronic cooling, and a second case housing the green and blue lasers. This segmentation reduces the volume of each sealed space, minimizing pressure fluctuations and water vapor retention while maintaining effective moisture-proof sealing for each compartment.
2Volume of stationary object
If the moisture-proof space volume is reduced to minimize pressure fluctuations, then water vapor retention is reduced, but the complexity of sealing and pressure management increases
Solution Approach 1:
By dividing the module into two cases, each with its own sealing, the complexity of managing a single large sealed space is reduced. Each case can be sealed and pressurized independently, simplifying the overall sealing and pressure management strategy.
Solution Approach 2:
The first case is designed with high sealing performance to protect the electronic cooling module, while the second case uses a moisture permeable portion to allow water vapor transmission. This local differentiation of sealing quality optimizes moisture management for each component's specific requirements.
3Reliability
If the first case is sealed with high airtightness to protect the electronic cooling module, then moisture-proof protection is improved, but heat dissipation from the cooling module becomes more difficult
Solution Approach 1:
The first case is designed with high sealing performance to protect the electronic cooling module from moisture, while incorporating a heat sink that extends through the case wall to dissipate heat to the external environment. This local differentiation allows simultaneous optimization of moisture protection and heat dissipation.
Solution Approach 2:
The heat sink acts as an intermediary between the sealed interior of the first case and the external environment, providing a thermal conduction path for heat dissipation while the case itself maintains the moisture barrier. This separates the functions of moisture protection and heat dissipation into different components.
4Quantity of substance
If the second case includes a moisture permeable portion to transmit water vapor, then water vapor management is improved, but the sealing performance against external moisture is reduced
Solution Approach 1:
The second case is designed with a moisture permeable portion that allows water vapor to pass through while maintaining structural integrity. This local permeability is strategically positioned to manage internal water vapor without compromising the overall sealing performance against external moisture, as the permeable portion is designed to allow only vapor transmission rather than liquid water penetration.
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 reduces the moisture-proof space volume, minimizing pressure fluctuations and water vapor retention, ensuring efficient cooling and moisture prevention while maintaining compactness and functionality.
Implementation Method 1
an electronic cooling module that adjusts a temperature of the first laser
Implementation Method 2
a dichroic mirror that combines the green light, the blue light, and the red light
Implementation Method 3
a first heat sink that dissipates heat from the electronic cooling module and a second heat sink that dissipates heat from the second laser and the third laser
Implementation Method 4
an air-cooling fan that draws in air so that the air flows through the second heat sink and the first heat sink
Implementation Method 5
the second case includes a moisture permeable portion capable of transmitting water vapor
Data Source
AI summary
Provided is a technique by which it is possible to reduce a volume of a moisture-proof space for sealing a light source module against moisture. A light source module includes a first laser that emits red light, a second laser that emits green light, a third laser that emits blue light, an electronic cooling module that adjusts a temperature of the first laser, a first case that houses the first laser, and a second case that houses the second laser and the third laser.