Dual Reflector Light Source Device for Beam Pitch Expansion
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Solution Overview
Problem
Conventional light source devices narrow the usable range of light by decreasing the pitch between light beams due to reflection by mirrors, limiting the emission of light beams with a pitch larger than the pitch between light sources.
Innovation Solution
A light source device comprising a first reflector with a first reflective surface and a second reflector with a second reflective surface parallel to the first, positioned behind it, along with first and second light sources that emit parallel light beams, where the second reflective surface is located in a space behind the first reflective surface, increasing the pitch between the reflected light beams.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If reflection mirrors are used to decrease the pitch between light beams, then the pitch between light beams is decreased, but the usable range of light is narrowed
Solution Approach 1:
The patent introduces a dual-reflector configuration where the second reflector is positioned behind the first reflector relative to the light source. This spatial arrangement in multiple dimensions allows light beams to be reflected twice, effectively increasing the pitch between output light beams while maintaining compatibility with narrow-pitch light sources. The multi-dimensional spatial arrangement resolves the contradiction by transforming the single-reflection geometry into a multi-reflection geometry that expands the usable light range.
2Length of moving object
If the pitch between light sources is narrow, then the pitch between light beams is further decreased by reflection, but this limits the emission of light beams with larger pitch
Solution Approach 1:
The second reflector acts as an intermediary element that receives light beams after their first reflection and redirects them to form parallel output beams. This intermediary reflector enables the system to transform narrow-pitch input beams into wide-pitch parallel output beams, effectively mediating between the conflicting requirements of narrow source pitch and desired large output pitch for proper light emission.
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 allows for a light source device that emits light beams with a pitch greater than the pitch between the light sources, enhancing the usable range of light and preventing light loss due to reflection.
Implementation Method 1
light beams emitted from a plurality of light sources are reflected by reflection mirrors disposed corresponding to the light beams
Data Source
AI summary
A light source device includes: a first reflector having a first reflective surface; a second reflector having a second reflective surface that is parallel to the first reflective surface and is located in a space behind the first reflective surface with respect to a normal direction of the first reflective surface; a first light source that emits a first light beam directed to the first reflective surface; and a second light source emitting a second light beam that is parallel to the first light beam. The second light beam is directed to the second reflective surface through a space in front of the first reflective surface.