Laser Light Source Airtight Device with Dynamic Volume Adjustment
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Solution Overview
Problem
Laser light sources are sensitive to environmental conditions such as dust, humidity, and temperature changes, leading to performance degradation and potential contamination due to gas pressure fluctuations within the airtight device.
Innovation Solution
A laser light source design incorporating an airtight device with a sealing housing and a gas pressure adjustment structure that adjusts the volume of the airtight device to maintain stable gas pressure, reducing gas exchange between the interior and exterior and preventing dust entry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the airtight device maintains a fixed volume, then the structure is simple and manufacturing is easy, but gas pressure fluctuates with temperature changes causing dust contamination and performance degradation
Solution Approach 1:
The airtight device incorporates a flexible membrane that dynamically adjusts the internal volume in response to temperature changes. When temperature increases, the membrane expands outward to increase volume and maintain pressure; when temperature decreases, the membrane contracts to reduce volume and maintain pressure. This dynamic adaptation prevents gas exchange and dust contamination while preserving laser performance and reliability.
Solution Approach 2:
The patent changes the physical state of the airtight device from rigid fixed-volume to flexible variable-volume by introducing a membrane structure. This parameter change allows the device to respond to temperature fluctuations by altering its internal volume, thereby maintaining stable gas pressure and preventing dust entry, which directly improves laser light source reliability.
2Reliability
If the airtight device volume is increased to accommodate expansion, then gas pressure stability improves, but the device occupies more space and the structure becomes more complex
Solution Approach 1:
Rather than providing excess static volume to accommodate expansion, the patent employs a dynamic membrane that allows the volume to change with temperature. This eliminates the need for oversized housing while maintaining pressure stability, as the membrane automatically adjusts the internal volume to match thermal expansion requirements.
Solution Approach 2:
The membrane structure transforms the airtight device from a fixed-volume rigid container to a variable-volume flexible container. This parameter change enables the device to maintain optimal volume at any temperature condition, achieving gas pressure stability without requiring excessive space or complex expansion mechanisms.
3Object-affected harmful factors
If the airtight device is completely sealed, then dust contamination is prevented, but gas pressure fluctuations from temperature changes still occur and can damage the laser device
Solution Approach 1:
The membrane creates a dynamic seal that maintains airtightness while accommodating pressure changes. As temperature rises and gas pressure increases, the membrane flexes outward to increase volume and reduce pressure; as temperature falls and pressure decreases, the membrane contracts to maintain the seal. This dynamic response prevents dust contamination while protecting against pressure damage.
Solution Approach 2:
The patent changes the airtight device from a rigid sealed container to a flexible sealed container with variable volume. This parameter change allows the device to maintain sealing integrity (preventing dust contamination) while dynamically adjusting volume to compensate for gas pressure fluctuations, thereby protecting the laser device from pressure stress.
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 stabilizes gas pressure within the airtight device, reducing dust contamination and enhancing the reliability of the laser light source by adjusting its volume in response to temperature changes, thereby maintaining performance and extending service life.
Implementation Method 1
the gas pressure adjustment structure is configured to adjust the volume of the airtight device
Implementation Method 2
the gas pressure adjustment structure includes an elastic film arranged within the gas chamber
Data Source
AI summary
A laser projection display device, relating to the technical field of laser, including a laser light source having a light source shell, an airtight device fixed on an inner wall of the light source shell, and a laser device provided in the interior of the airtight device. The airtight device having a sealing housing and a gas pressure adjustment structure, the sealing housing is fixed on an inner wall of the light source shell, the gas pressure adjustment structure is arranged on one side of the sealing housing, the sealing housing is communicated with the gas pressure adjustment structure, and the gas pressure adjustment structure is configured to adjust the volume of the airtight device.