Optical Component With Low Melting Point Glass Fixing Member
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Solution Overview
Problem
Conventional optical components, such as those using optical fibers and hermetically sealed can packages with semiconductor laser elements, face issues with light emitting efficiency due to inadequate attachment methods and the volatilization of organic components from resin adhesives, leading to impurities and reduced optical output.
Innovation Solution
An optical component with a fixed member featuring a through hole and a wavelength conversion member, where the wavelength conversion member is securely fixed using a low melting point glass fixing member, preventing optical output degradation and ensuring hermetic sealing, with configurations like cut-in parts, hole parts, and projections to enhance attachment reliability and prevent light absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If resin adhesive is used to fix glass in can package, then hermetic sealing is achieved, but organic components volatilize and attach to internal surfaces, lowering optical output
Solution Approach 1:
The patent removes the resin adhesive from the sealing structure entirely, extracting the harmful organic component source. Instead, it uses a metal can body with an integrated sealing structure that achieves hermetic sealing through mechanical means (flange, seal ring, and welding) without organic adhesives, thereby eliminating volatilization while maintaining sealing reliability
Solution Approach 2:
The patent introduces a seal ring as an intermediary element between the can body and the glass window assembly. This seal ring provides the hermetic sealing function previously achieved by resin adhesive, but through a inorganic, non-volatilizing material that can be mechanically secured and thermally processed without degrading
2Ease of operation
If disperser is attached to optical fiber distal end, then light dispersion is achieved, but attachment method reduces light emitting efficiency
Solution Approach 1:
The patent removes the separate disperser component and its attachment structure from the optical system. Instead, it integrates the light dispersion function directly into the optical fiber tip through a precisely formed recess that holds a wavelength conversion member, eliminating the attachment interface and associated light loss
Solution Approach 2:
The patent merges the disperser function with the optical fiber tip structure itself. The recess formed in the optical fiber tip and the wavelength conversion member held within it create an integrated light dispersion assembly, eliminating the need for a separate attached disperser component and improving light emitting efficiency by removing the attachment interface
3Reliability
If fixing member is used to attach wavelength conversion member, then attachment reliability is improved, but light absorption by fixing member increases
Solution Approach 1:
The patent changes the material parameters of the fixing member by using a material with refractive index and absorption characteristics matched to the optical fiber and wavelength conversion member. This allows the fixing member to provide mechanical attachment while minimizing light absorption and maintaining optical transmission efficiency
Solution Approach 2:
The patent applies the fixing member only in specific localized areas where mechanical attachment is required, rather than covering the entire interface. This localized application minimizes the total amount of fixing material in the optical path, reducing overall light absorption while maintaining sufficient attachment reliability
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 significantly improves light emitting efficiency by securely attaching the wavelength conversion member with minimal light absorption, reducing impurities, and maintaining optical output quality, as demonstrated by a 1.3 times increase in light emitting efficiency compared to conventional methods.
Implementation Method 1
The wavelength conversion member is preferably fixed to the fixed member using a fixing member
Implementation Method 2
a wavelength conversion member having at least one part arranged in the through hole
Data Source
AI summary
The optical component according to the present invention includes a fixed member including a through hole, and a wavelength conversion member having at least one part thereof arranged in the through hole, where the fixed member is formed with a cut-in part or a hole part in a direction substantially perpendicular to the longitudinal direction of the through hole.