Optical Apparatus Package Securing Mechanism for Assembly Workability
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Solution Overview
Problem
Existing optical devices with flanges projecting from packages can hinder workability during assembly, particularly when connecting optical fibers, due to interference with electrode leads and laser welding processes.
Innovation Solution
The optical apparatus features a package with a first side wall and bottom wall, a base with an attachment surface, and independent package securing members that press the package against the base, eliminating the need for flanges that project from the package, thus enhancing assembly workability and allowing for flexible flange positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If flanges are provided at both longitudinal ends of the package to prevent interference with electrode leads, then the package structure is stable, but the workability in assembling optical devices is lowered due to projecting flanges
Solution Approach 1:
The package structure is segmented into two independent parts: the package body containing optical components, and separate flanges that can be positioned independently. This allows the flanges to be arranged to avoid interference with electrode leads and optical fiber connection operations while maintaining package structural integrity through the extension portions of the bottom wall.
Solution Approach 2:
Extension portions of the bottom wall act as intermediaries between the package body and the flanges. These extensions provide mounting surfaces for flanges without requiring the flanges to project from the package body, thereby mediating between the need for stable attachment and the need for clear assembly operations.
2Reliability
If through holes are formed in flanges for securing the optical semiconductor module to the base, then the package can be securely attached, but the flanges must project from the package which reduces assembly workability
Solution Approach 1:
The attachment structure transitions from a two-dimensional flange projection on the package surface to a three-dimensional configuration where extension portions of the bottom wall provide attachment surfaces. This dimensional change allows secure attachment through extension portions rather than projecting flanges, improving assembly workability while maintaining attachment reliability.
3Strength
If flanges project from the package to allow secure mounting, then the package can be firmly fixed to the base, but interference occurs with optical fiber connection and laser welding operations
Solution Approach 1:
The flange function is extracted from the package body and implemented through extension portions of the bottom wall. This separation removes the harmful interference of projecting flanges from the package body, eliminating obstacles to optical fiber connection and laser welding operations while preserving the fixing strength function through the extension portions.
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 ensures secure attachment of the package to the base without projecting securing members, improving the ease of connecting optical fibers and laser welding operations by preventing interference and allowing for uniform welding strength and flexibility in flange placement.
Implementation Method 1
a first package securing member having a pressing part, the pressing part abutting against the first extension so as to generate a force for pressing the package against the base
Data Source
AI summary
An optical apparatus comprises a package containing an optical device and having a front end face provided with a through window part 11 to which an optical fiber optically connected to the optical device is attached, a base having an attachment surface for attaching the package, a first extension arranged so as to project from the front end face along the attachment surface, and a package securing member having a tilted surface adapted to abut against the package so as to generate a force for pressing the package against the base. The package securing member is independent of the package.