Light Source Device for Optical Measurement
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Solution Overview
Problem
Existing optical measuring devices face challenges with insufficient light intensity in short wavelength bands, particularly around 300 nm to 500 nm, when the filament temperature is reduced to increase lamp life, and require complex optical axis adjustments for combined light sources.
Innovation Solution
A light source device comprising a first light source, such as a halogen lamp, and a second light source, like an LED, where the second light source irradiates the first light source with narrower wavelength light, producing combined light that is diffused and reflected on the first light source's surface, allowing for simplified optical alignment and enhanced intensity in desired wavelength bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If the filament temperature is reduced to increase lamp life, then the lamp life is extended, but the light intensity in short wavelength band becomes insufficient
Solution Approach 1:
The patent combines light from a first light source (halogen lamp with continuous spectrum) and light from a second light source (LED with narrow wavelength band) by having the second light source irradiate the first light source, which diffuses and reflects the light to produce combined light with enhanced intensity in specific wavelength bands while maintaining extended lamp life
2Illumination intensity
If multiple light sources are combined to enhance light intensity, then the light intensity in desired wavelength bands is improved, but complicated optical axis adjustment is required
Solution Approach 1:
The first light source serves dual functions: it emits light directly and simultaneously acts as a diffuser and reflector for the second light source. The filament structure and bulb surface automatically diffuse and reflect the second light source's light without requiring additional optical components or complex alignment mechanisms, eliminating the need for complicated optical axis adjustment
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
This configuration enables the light source device to provide combined light with increased intensity in specific wavelength bands, extending the life of the filament and simplifying optical alignment, thus improving optical measurement capabilities without requiring complex optical axis adjustments.
Implementation Method 1
light from the second light source, which is diffused and reflected on a surface of the first light source
Implementation Method 2
light from the second light source, which is diffused and reflected on a surface of the first light source
Implementation Method 3
The spectrum of light from the filament which has performed high temperature light emitting is determined by the temperature of the filament according to light emission principles of black body radiation
Data Source
AI summary
An optical measuring device which measures absorbance of a measuring object at a plurality of wavelengths, the optical measuring device comprising: a light source device; and an optical measuring part which irradiates the measuring object with light from the light source device and performs optical measurement of the measuring object based on light from the measuring object, wherein the light source device has a first light source, a second light source, and a light source control part which drives the first light source and the second light source, the light source control part performs heating and light emitting drive of the first light source, and drives the second light source, and the light source device irradiates the measuring object with combined light of light from the first light source and light diffused and reflected on a surface of the filament.