Optical Measurement Device Beam Cross-Section Correction
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Solution Overview
Problem
Existing optical measurement devices face challenges in accurately calculating optical characteristics like absorptance and quantum efficiency due to difficulties in measuring the area of the excitation light beam cross-section, leading to potential deviations from true values.
Innovation Solution
The device calculates correction data using intensity data from light absorbing members with different configurations relative to the beam cross-section, allowing for accurate determination of optical characteristics without directly measuring the beam cross-section area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the area of the beam cross-section is not directly measured, then the measurement process is simpler and faster, but the calculation accuracy of optical characteristics deteriorates
Solution Approach 1:
The patent introduces a mediator object (light absorbing member with known properties) to indirectly obtain the beam cross-section area. Instead of directly measuring the beam area, the system uses the light absorbing member as an intermediary to capture the beam and measure its properties, thereby deriving the beam area through calculation rather than direct measurement.
Solution Approach 2:
The patent creates a copy of the beam interaction scenario using the light absorbing member. By measuring how the light absorbing member interacts with the beam (absorption characteristics), the system obtains information about the beam cross-section area without directly measuring the beam itself, effectively using a copy or proxy measurement approach.
2Measurement precision
If the beam cross-section area is directly measured, then the accuracy of optical characteristics calculation is improved, but the measurement process becomes more complex and time-consuming
Solution Approach 1:
The light absorbing member serves as an intermediary that simplifies the measurement process. Instead of complex direct beam area measurement, the system uses the light absorbing member to indirectly obtain beam properties, reducing measurement complexity while maintaining accuracy.
Solution Approach 2:
The patent replaces direct physical measurement of the beam cross-section with an optical measurement approach using light absorption characteristics. This substitution of measurement methodology reduces complexity by using optical properties rather than mechanical or geometric measurement techniques.
3Measurement precision
If the beam cross-section area is directly measured, then the accuracy of optical characteristics calculation is improved, but the measurement time increases
Solution Approach 1:
The light absorbing member is prepared in advance with known properties, allowing the system to skip the time-consuming direct beam area measurement. The preliminary preparation of the mediator object enables faster indirect measurement of beam characteristics.
Solution Approach 2:
The light absorbing member as an intermediary enables rapid indirect measurement of beam properties. Instead of time-consuming direct measurement, the system quickly obtains beam cross-section area information through the light absorbing member's interaction with the beam, significantly reducing measurement time.
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 method enables precise calculation of optical characteristics, such as absorptance and quantum efficiency, even when the beam cross-section area is not directly measured, improving accuracy and reducing measurement errors.
Implementation Method 1
a first light absorbing member A and a second light absorbing member B
Data Source
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AI summary
An optical measurement device inputs excitation light to an integrating sphere in which a sample is disposed, irradiates the sample with the excitation light having a predetermined beam cross-section, detects measurement light output from the integrating sphere by a photodetector, and acquires intensity data of the sample. The optical measurement device includes a storage unit in which correction data is stored and an optical characteristic calculation unit for calculating optical characteristics of the sample based on the intensity data of the sample and the correction data. The correction data is calculated based on first corrective intensity data and second corrective intensity data. The predetermined beam cross-section is covered with the first light absorbing member and covers the second light absorbing member.