Light Emitting Sealed Body Structure for Window Contamination Control
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Solution Overview
Problem
Laser excitation light sources face a reduction in lifespan due to extraneous matter accumulation on windows, which disrupts laser light transmission and emitted light quality.
Innovation Solution
A light emitting sealed body with a housing that includes extension spaces or grooves to facilitate fluid supply to windows, combined with a protection layer over joining materials to prevent oxidation and adhesion of extraneous matter, ensuring reliable transmission of laser light and extended lifespan.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If the laser excitation light source is continuously driven, then the light source can maintain operation, but extraneous matter accumulates on the window portion causing stains that disturb light transmission and shorten lifespan
Solution Approach 1:
The patent applies preliminary action by providing a protection layer on the window portion before extraneous matter can accumulate and cause stains. This protection layer is applied in advance during manufacturing, creating a barrier that prevents harmful substances from adhering to the window during continuous operation, thereby maintaining light transmission quality throughout the device's lifespan.
Solution Approach 2:
The patent creates an inert environment by applying a protection layer that forms a barrier between the window portion and the external environment. This barrier prevents harmful substances in the ambient atmosphere from contacting and adhering to the window, effectively creating a protected zone that maintains optical clarity during continuous operation.
2Illumination intensity
If the window portion is exposed to the external environment, then light transmission is enabled, but harmful substances can adhere to the window causing stains
Solution Approach 1:
The patent introduces a protection layer as an intermediary substance between the window portion and the external environment. This intermediate layer allows the window to remain exposed for light transmission while simultaneously preventing direct contact between harmful substances and the window surface, thus maintaining illumination quality without compromising protection.
Solution Approach 2:
The protection layer creates a localized inert environment on the window surface, forming a barrier that prevents harmful substances from the external environment from adhering to the window, while still allowing light to pass through effectively.
3Reliability
If a protection layer is applied to prevent extraneous matter adhesion, then window cleanliness is improved, but the device structure becomes more complex
Solution Approach 1:
The patent applies parameter changes by modifying the surface properties of the window portion through the application of a protection layer. This changes the surface characteristics to be non-adhesive to harmful substances, thereby improving window cleanliness and reliability without requiring complex mechanical or operational systems to maintain cleanliness.
Data Source
AI summary
A light emitting sealed body includes a housing which stores a discharge gas in an internal space and is provided with a first window portion to which first light is incident and a second window portion from which second light is emitted. The housing includes at least one flow path which is partitioned from the internal space and extends toward at least one of the first window portion and the second window portion.