Semiconductor Laser Module Staircase Mirror Arrangement
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Solution Overview
Problem
Conventional semiconductor laser modules face challenges in compactness and ease of assembly due to limited effective reflecting mirror width and increased spherical aberration, which restricts the use of semiconductor lasers with large beam divergence and complicates the installation process.
Innovation Solution
A semiconductor laser module design featuring a staircase-like arrangement of semiconductor lasers and mirrors, where primary reflecting mirrors within each column reflect light in the same axis direction, and secondary mirrors adjust beam groups to overlap on the same axis, allowing for a wider effective reflecting mirror width and reduced spherical aberration, enabling easier assembly and integration with an optical fiber.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If semiconductor lasers are arranged side by side in multiple columns to improve installation efficiency, then the number of lasers per unit area increases, but the module length increases and compactness deteriorates
Solution Approach 1:
The patent transitions from a two-dimensional planar arrangement to a three-dimensional stacked arrangement by introducing vertical layers. Multiple semiconductor lasers are arranged in different height levels (first layer, second layer, third layer) with corresponding reflecting mirrors positioned at different vertical positions, allowing light beams to be reflected onto different vertical positions of the optical fiber. This vertical dimensionality change enables higher installation efficiency while maintaining compact module length.
2Adaptability or versatility
If the effective reflecting width of mirrors is increased to accommodate larger beam divergence, then more light can be reflected, but the mirror size and module area increase
Solution Approach 1:
The patent utilizes the vertical dimension to position reflecting mirrors at different height levels corresponding to different semiconductor laser layers. This allows the system to accommodate larger beam divergence angles without increasing the horizontal reflecting width of individual mirrors, as the vertical separation provides additional spatial room for beam manipulation.
Solution Approach 2:
The optical system is segmented into multiple discrete layers, with each layer containing semiconductor lasers and corresponding reflecting mirrors. This segmentation allows independent optimization of each layer's optical path, enabling efficient light reflection for lasers with large beam divergence without requiring oversized mirrors.
3Use of energy by moving object
If semiconductor lasers with large beam divergence are used to improve light emission, then more light can be emitted, but spherical aberration increases and optical precision deteriorates
Solution Approach 1:
By arranging reflecting mirrors at different vertical positions corresponding to different laser layers, the system can control and redirect light beams with large divergence angles more effectively. The vertical dimension provides additional degrees of freedom for optical path control, helping to reduce spherical aberration while maintaining high light emission efficiency.
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 design allows for a compact, easy-to-assemble semiconductor laser module that can accommodate semiconductor lasers with large beam divergence while minimizing spherical aberration and optimizing installation efficiency.
Implementation Method 1
a lens that collimates laser beams emitted by the respective semiconductor lasers
Implementation Method 2
increased spherical aberration, which restricts the use of semiconductor lasers with large beam divergence
Implementation Method 3
a plurality of primary reflecting mirrors that reflect the laser beams respectively
Data Source
AI summary
Semiconductor lasers are arranged in a plurality of columns. The columns of the respective semiconductor lasers include semiconductor laser installed columns. Reflecting mirrors in the respective semiconductor laser installed columns reflect light in substantially the same axial direction as viewed from above, and constitute beam groups. The beam groups of the respective semiconductor laser installed columns are formed on both sides in a width direction of a housing. That is, the beam groups are configured for each of the semiconductor laser installed columns, and the respective beam groups are formed on mutually different axes as viewed from above.