Single-Laser Spectroscopic Optics With Integrated Length Measurement
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Solution Overview
Problem
Existing optical devices for spectroscopy require two light sources, leading to increased size, power consumption, and complexity, which complicates the structure and increases costs.
Innovation Solution
An optical device that integrates a single laser light source to split light into analysis and length measurement paths, using a single optical system with a beam splitter and mirrors to generate interference signals, and a calculation device to perform Fourier transforms for spectroscopic analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two light sources are used for spectroscopy and length measurement, then measurement functions are complete, but device size increases
Solution Approach 1:
The patent applies multi-functionality by enabling a single laser light source to perform both spectroscopic analysis and length measurement functions. The laser light is divided into analysis light for spectroscopy and measurement light for length measurement, allowing one light source to replace two separate sources, thereby reducing device size while maintaining complete measurement capabilities
Solution Approach 2:
The patent merges the spectroscopy optical system and length measurement optical system into a single integrated system. Both functions share the same laser light source, beam splitter, and detection path, combining previously separate systems into one unified device that reduces overall volume while preserving functional completeness
2Reliability
If two light sources are used for spectroscopy and length measurement, then measurement functions are complete, but power consumption increases
Solution Approach 1:
The single laser light source performs dual functions of spectroscopic analysis and length measurement, eliminating the need for two separate light sources. This multi-functional approach reduces power consumption while maintaining complete measurement capabilities through intelligent light path management
Solution Approach 2:
By merging the power requirements of two light sources into one, the system reduces total power consumption. The integrated optical system shares common components and power supply, achieving energy efficiency while preserving both spectroscopy and length measurement functions
3Reliability
If two light sources are used for spectroscopy and length measurement, then measurement functions are complete, but device structure becomes complicated
Solution Approach 1:
The system uses a single laser light source that serves multiple purposes: generating analysis light for spectroscopy and measurement light for length measurement. This multi-functional design simplifies the overall structure by eliminating redundant components while maintaining complete measurement functions
Solution Approach 2:
The patent combines the spectroscopy optical path and length measurement optical path into a single integrated system sharing common components including the laser source, beam splitter, and detection system. This merging reduces structural complexity and component count while preserving functional completeness
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 reduces device size, power consumption, and cost while maintaining high accuracy in spectroscopic analysis by eliminating the need for two light sources and simplifying the structure.
Implementation Method 1
The measurement light incident from the first light source through a measurement target is divided in the beam splitter unit. A part of the divided measurement light is reflected by the movable mirror and returns to the beam splitter unit.
Implementation Method 2
an interference optical system into which measurement light and laser light are incident is implemented by the beam splitter unit, the movable mirror, and the fixed mirror
Implementation Method 3
The part and the remaining part of the measurement light returned to the beam splitter unit are detected by the first photodetector as interference light
Data Source
AI summary
An optical device includes: an incident optical system; an analysis optical system; and a length measurement optical system. The incident optical system includes a laser light source, and an incident light dividing element that divides the laser light. The analysis optical system includes a first light dividing element that divides the first divided light and then mixes the light, a first mirror that adds a first modulation signal to the one first divided light by movement and reflection, a second mirror, and a first light receiving element that receives the first divided light including a sample-derived signal and the first modulation signal. The length measurement optical system includes a second light dividing element that divides the second divided light and then mixes the light, an optical feedback unit that feeds back the one second divided light to the second light dividing element, and a second light receiving element that receives the second divided light including a displacement signal generated by the first mirror.