Non-collimated Laser Component Measurement Apparatus
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Solution Overview
Problem
Existing component measurement apparatuses require significant assembly and adjustment time due to the need for precise alignment of optical axes, and frequent invasive blood glucose measurements are painful and unreliable due to varying measurement conditions.
Innovation Solution
A component measurement apparatus with a confocal optical system that includes a variable wavelength laser, an objective lens that condenses laser light without shaping it into collimated light, a half mirror for redirecting reflected light, and a data analyzer that quantifies glucose concentration using absorbance measurements, along with a motion drive mechanism for three-dimensional alignment and optical fiber illumination for stable light intensity control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If laser light is shaped into collimated light by a collimating lens before striking a half mirror, then the optical path is well-defined, but the assembly and adjustment time increases significantly due to alignment requirements
Solution Approach 1:
The patent removes the collimating lens from the optical path, extracting the component that causes alignment complexity. By directly condensing laser light with the objective lens without intermediate collimation, the system eliminates the need for precise alignment between the collimating lens and half mirror, significantly reducing assembly and adjustment time while maintaining measurement functionality
Solution Approach 2:
The objective lens is designed to perform multiple functions: it directly condenses the laser light onto the measurement position and also serves as the condensing lens for the confocal optical system. This multi-functionality eliminates the need for separate collimating and condensing lenses, reducing the number of components requiring alignment and simplifying the overall optical system
2Measurement precision
If invasive blood collection methods are used for glucose measurement, then direct blood glucose analysis is achieved, but the subject experiences significant physical pain and measurement reliability decreases due to varying conditions
Solution Approach 1:
The patent uses laser light as an intermediary to indirectly measure blood glucose concentration through tissue absorbance. Instead of directly analyzing blood samples, the system illuminates internal tissue with laser light and detects the absorbed light, which correlates with glucose concentration. This intermediary approach eliminates the need for invasive blood collection, reducing physical pain and measurement variability while maintaining measurement capability
Solution Approach 2:
The patent replaces the mechanical invasive blood collection system (syringes, finger pricking) with an optical measurement system. By using laser light absorption through tissue to infer glucose concentration, the system substitutes physical intrusion with non-invasive optical detection, eliminating physical pain and the variability associated with different blood collection conditions
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 solution simplifies assembly and adjustment, allows for accurate measurement data from a desired position, and reduces physical discomfort by non-invasively determining blood glucose levels with improved reliability and reduced measurement time.
Implementation Method 1
a laser that emits laser light
Implementation Method 2
an objective lens that condenses the laser light emitted from the laser
Implementation Method 3
the laser light reflected by the internal tissue of the living body LB
Implementation Method 4
a half mirror that redirects reflected light reflected by the internal tissue of the object of measurement
Implementation Method 5
The light-receiving element 7 converts the received laser light into an electrical signal
Implementation Method 6
Glucose absorbs a comparatively large amount of light in that wavelength region
Data Source
AI summary
A component measurement apparatus includes a laser that emits non-collimated laser light, an objective lens that condenses the non-collimated laser light emitted from the laser in order for the laser light to illuminate internal tissue of an object of measurement without collimating the laser light, a half mirror that redirects reflected light reflected by the internal tissue of the object of measurement and refracted by the objective lens, a pin hole through which the reflected light redirected by the half mirror passes, a light-receiving element that receives the reflected light having passed through a pin hole, and a data analyzer section that measures a component of the object of measurement in accordance with data output from the light-receiving element.