Plasma Light Sealed Body With Separated Laser and Output Windows
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Solution Overview
Problem
The existing light-emitting sealed bodies used as laser excitation light sources suffer from the issue of laser beams being emitted along with plasma light, degrading the output light quality and potentially damaging the optical system due to increased heat when output is enhanced, and the use of light shielding or absorbing members leads to heat-related damage.
Innovation Solution
A light-emitting sealed body with a housing structure featuring separate windows for plasma light emission and laser beam transmission, along with a light shielding wall, allowing separate extraction of laser beams and plasma light, and an enclosure to minimize gas convection and thermal influence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the laser beam output is increased to increase the light emission output, then the output of output light is improved, but the laser beam adversely influences the optical system by heat
Solution Approach 1:
The patent divides the housing into multiple dedicated openings: a first opening for laser beam input, a second opening for plasma light output, and a third opening for transmitted laser beam output. This segmentation allows each opening to serve a specific function, enabling the laser beam to pass through the plasma region without its transmitted portion interfering with the plasma light optical path, thus allowing higher laser output without adverse heat influence on the optical system.
2Object-affected harmful factors
If a light shielding member or light absorbing member is disposed at a position facing the laser beam incidence window to prevent laser beam emission, then the laser beam is not emitted to the outside, but when the output of the laser beam is increased, the influence of the heat in the light-emitting sealed body increases, and there is a possibility that the light-emitting sealed body and internal components are damaged
Solution Approach 1:
The patent extracts the transmitted laser beam from the housing through a dedicated third opening, allowing it to exit separately from the plasma light. This extraction eliminates the need for light shielding members or absorbing members that would otherwise be required to prevent laser beam emission, thereby avoiding the heat accumulation and potential damage associated with those components.
3Productivity
If the laser beam is transmitted through the plasma and emitted from the plasma light emission window together with the plasma light, then the output light is a mixture of plasma light and laser beam, but the quality of the output light deteriorates
Solution Approach 1:
The patent segments the light output paths by providing separate openings: the second opening exclusively for plasma light emission and the third opening for transmitted laser beam emission. This segmentation ensures that the output light contains only plasma light without laser beam contamination, maintaining high optical quality while still allowing the laser beam to pass through the plasma region.
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 improves both the quality and output of the emitted light by separating laser beams and plasma light paths, reducing heat-related damage, and stabilizing plasma generation.
Implementation Method 1
a gas for generating plasma in a plasma region
Implementation Method 2
a wall having a light shielding property and defining at least a light passage region of the third window
Data Source
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AI summary
A light-emitting sealed body includes a housing structure housing a gas for generating plasma. The housing structure includes a first window configured to cause first light for maintaining the plasma in a plasma region where the plasma is generated to be incident on the plasma region, a second window configured to emit second light emitted from the plasma from the plasma region, a third window facing the first window with the plasma region interposed therebetween and configured to emit the first light transmitted through the plasma from the plasma region, and a wall having a light shielding property and defining at least a light passage region of the third window.