Light-Emitting Module With Orthogonal Mirror Beam Combining
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Solution Overview
Problem
Existing light-emitting modules face challenges in effectively combining laser beams from multiple semiconductor laser elements due to deviations in the traveling direction of the laser beams, which affects the output power and efficiency of the combined light.
Innovation Solution
A light-emitting module design featuring a support base with placement surfaces for semiconductor laser elements, first and second mirror members with reflective surfaces that adjust the laser beam direction, and a condensing lens to converge the beams onto an optical fiber, where the second mirror members' reflective surfaces are positioned differently to align the beams effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If multiple semiconductor laser elements are used to increase output power, then the total laser power increases, but the deviation in traveling direction of laser beams worsens, making effective combination difficult
Solution Approach 1:
The patent introduces a two-stage mirror system where the first mirror reflects laser beams in a first direction and the second mirror reflects them in a second direction intersecting the first direction. This multi-dimensional reflection approach allows independent adjustment of horizontal and vertical beam directions, enabling precise alignment of multiple laser beams from different semiconductor laser elements while maintaining high output power.
Solution Approach 2:
The patent uses mirror members as intermediary components between the semiconductor laser elements and the optical fiber. These mirrors act as mediators that can independently adjust the traveling directions of laser beams, compensating for deviations caused by variations in laser element characteristics and enabling effective combination of beams with different directions.
2Productivity
If the traveling directions of laser beams are not aligned, then individual laser elements can operate independently, but the combination efficiency of multiple laser beams decreases
Solution Approach 1:
The patent divides the beam direction adjustment function into two separate mirror members: a first mirror for adjusting direction in a first direction and a second mirror for adjusting direction in a second direction intersecting the first direction. This segmentation allows independent optimization of each mirror's function, simplifying the alignment process while achieving precise two-dimensional beam direction control for high combination 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
The module achieves efficient combination and increased output of laser beams by aligning and converging them onto an optical fiber, enhancing the power and efficiency of the combined light emitted.
Implementation Method 1
a plurality of first mirror members each having a first reflective surface, the first reflective surface reflecting the laser beams to change a traveling direction of the laser beams
Implementation Method 2
the second reflective surface reflecting, in a second direction intersecting the first direction, the laser beams reflected by the first reflective surface
Data Source
AI summary
A light-emitting module includes: a support base having a plurality of placement surfaces arranged in a first direction; a plurality of semiconductor laser elements disposed on respective ones of the plurality of placement surfaces, each semiconductor laser element configured to emit laser beams; a plurality of first mirror members, each having a first reflective surface configured to reflect and change a traveling direction of the laser beams from a respective one of the semiconductor laser elements; and a plurality of second mirror members, each having a second reflective surface, at least a portion of the second reflective surface being positioned above at least a portion of a respective one of the first reflective surfaces, and the second reflective surface being configured to reflect, in a second direction intersecting the first direction, the laser beams reflected by the respective first reflective surface.