Optical Spectrum Analysis with Current-Tuned LED Irradiation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current optical analysis methods using mercury or neon lamps or light-emitting diodes suffer from insufficient detection resolution and accuracy due to thermal drift and interference between irradiating lights, leading to potential object deterioration and increased costs.
Innovation Solution
An optical analysis system and method that utilizes varying driving electric currents to fine-tune the wavelength ranges and peak wavelengths of irradiating lights emitted by multiple light-emitting units, irradiating the object at different times to improve detection resolution and accuracy without increasing the number of units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple light-emitting diodes of different peak wavelengths are used to increase detection resolution, then detection resolution is improved, but the spectra of irradiating lights have double peaks causing interference between adjacent irradiating lights and reducing detection accuracy
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the driving currents of light-emitting units to fine-tune the peak wavelengths and wavelength ranges of irradiating lights. This allows precise control over the spectral characteristics, enabling the system to achieve high detection resolution while avoiding the double peak interference problem that occurs with fixed-wavelength light-emitting diodes. The control processing unit modifies operational parameters (driving currents) to optimize both resolution and accuracy.
2Adaptability or versatility
If mercury lamp or neon lamp is used to provide irradiating lights of wide wavelength range, then the object to be tested can be irradiated, but the object heats up leading to deterioration and decreased detection accuracy
Solution Approach 1:
The patent segments the broad wavelength range into multiple narrower bands, each covered by a dedicated light-emitting unit with specific wavelength characteristics. Instead of using a single broad-spectrum source like mercury or neon lamps that heat the object uniformly across the entire spectrum, the system divides the spectral coverage into discrete segments (first wavelength range, second wavelength range, etc.), each irradiating the object separately. This segmentation reduces thermal accumulation while maintaining comprehensive spectral coverage for analysis.
Solution Approach 2:
The patent implements periodic action by sequentially irradiating the object with different wavelength ranges at different time periods. The control processing unit controls the light-emitting units to emit irradiating lights in a time-division manner, where each light-emitting unit activates in turn to cover its designated wavelength range. This periodic activation pattern allows the object to cool between irradiation cycles, preventing excessive heating while still achieving complete spectral analysis coverage over time.
3Measurement precision
If light-emitting diodes with different peak wavelengths are used to improve detection resolution, then more irradiating lights can be generated, but the cost increases and thermal drift of peak wavelengths occurs reducing detection accuracy
Solution Approach 1:
The patent applies dynamics by making the light-emitting units adjustable rather than fixed. The control processing unit dynamically modifies the driving currents of the light-emitting units to compensate for thermal drift and maintain stable peak wavelengths. This dynamic adjustment capability allows the system to adapt to temperature changes in real-time, ensuring consistent detection accuracy across different operating conditions. The system transitions from static, fixed-wavelength light sources to dynamic, tunable light sources that can self-correct for environmental variations.
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
Enhances detection resolution and accuracy by controlling the wavelength and peak wavelengths of irradiating lights, reducing thermal drift and interference, and maintaining object integrity while minimizing additional components.
Implementation Method 1
The light source device includes a first light-emitting unit and a second light-emitting unit, wherein a first driving electric current and a second driving electric current respectively drive the first light-emitting unit to emit a first irradiating light and a second irradiating light
Implementation Method 2
the detection signals generated by an optical receiver are analyzed to obtain the spectrum of the object to be tested after the optical receiver is used to receive the transmitted lights or the reflected lights
Data Source
AI summary
An optical analysis system and an optical analysis method, which simply change driving electric currents of light-emitting units via using a control and process unit, so that a wavelength range and a peak wavelength of an irradiated light generated by each light-emitting unit may be fine-tuned. A plurality of irradiating lights with different wavelength ranges and peak wavelengths are irradiated to the object to be tested in different times, so that merely fewer light-emitting units may be used to improve a detection resolution and a detection accuracy of a spectrum of the object to be tested.