Lens Array Multiplexing Optics for Higher Beam Occupancy
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Solution Overview
Problem
The existing multiplexing optical systems face challenges in achieving high light condensing properties due to the anamorphic optical element's reduction of beam diameters and intervals, leading to limited beam occupancy and condensing angle, which hinders the formation of a multiplexed beam with enhanced light condensing properties.
Innovation Solution
A multiplexing optical system comprising a light source with surface-emitting lasers, an optical path changing member, and a light condensing member with a lens array that adjusts and condenses laser light beams to increase beam occupancy and reduce the light condensing angle, forming a multiplexed beam with improved light condensing properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If an anamorphic optical element is used to reduce beam diameters, then the beam size is reduced, but the beam interval is reduced at the same ratio, resulting in no improvement in beam occupancy
Solution Approach 1:
The optical system is segmented into distinct functional components: a collimator optical element for beam expansion, an anamorphic optical element for aspect ratio adjustment, and a light condensing optical element for focusing. This segmentation allows each component to optimize a specific parameter without adversely affecting others, enabling independent control of beam diameter and beam interval.
Solution Approach 2:
Different regions of the optical system perform different functions with different optical properties. The collimator optical element provides uniform expansion in both directions, while the anamorphic optical element provides asymmetric magnification with different magnification ratios in the first and second directions, creating local quality differences that enable selective beam parameter control.
2Shape
If an anamorphic optical element with equal magnification ratios is used, then the beam shape is simplified, but the beam interval is not relatively reduced, limiting light condensing angle improvement
Solution Approach 1:
The anamorphic optical element is designed with asymmetric optical properties, having a first magnification ratio in the first direction and a second magnification ratio in the second direction, where the ratios are different. This asymmetry allows selective reduction of beam interval in one direction while maintaining or expanding beam size in the other direction, thereby improving beam occupancy and light condensing angle.
3Device complexity
If beam diameter and beam interval are reduced at the same ratio, then the optical system is simpler, but the beam occupancy in total beam diameter remains unchanged
Solution Approach 1:
The system changes optical parameters at different stages: the collimator optical element changes beam diameter parameters, the anamorphic optical element changes magnification ratio parameters asymmetrically in different directions, and the light condensing optical element changes focusing parameters. These parameter changes enable independent optimization of beam diameter and beam interval, improving beam occupancy without excessive system complexity.
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 system effectively increases beam occupancy and decreases the light condensing angle, resulting in a multiplexed beam with a high light condensing property, allowing for efficient energy concentration and high-output laser transmission.
Implementation Method 1
a light condensing member which includes a plurality of lens regions arrayed so as to correspond to respective optical paths of the laser light beams changed by the optical path changing member, and is configured to condense the laser light beams by the lens regions to form a multiplexed beam
Data Source
AI summary
A multiplexing optical system includes a light source, a lens and a lens array. The light source includes a plurality of light emitting elements of surface emitting lasers. The lens is configured to change and condense optical paths of laser light beams emitted from the light emitting elements. The lens array includes a plurality of lens regions arrayed so as to correspond to respective optical paths of the laser light beams changed by the lens, and is configured to condense the laser light beams by the lens regions to form a multiplexed beam.