Colorimetry Device Integrating Sphere Trap Hole SCI SCE Switching
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Solution Overview
Problem
Existing colorimetry devices using integrating spheres face challenges in performing accurate measurements on micro-components with complex shapes due to the need for complex structures and the inability to easily switch between Specular Component Included (SCI) and Specular Component Excluded (SCE) measurements, and lack a simple method for user specimen positioning.
Innovation Solution
A colorimetry device with an integrating sphere, a trap hole, and imaging means that allows users to check specimen positioning through a display, using a drive mechanism to switch between SCI and SCE measurements by closing the trap hole during SCI measurements and using a non-reflective lid to prevent specular reflection during SCE measurements, eliminating the need for a beam splitter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a hole for connecting a camera is made in the integrating sphere, then a user can check a position of a specimen, but mixing performance deteriorates significantly
Solution Approach 1:
The trap hole is provided in advance in the integrating sphere, but it is closed by a trap during measurement. The camera observes the specimen through this pre-provided hole only when positioning is needed, not during actual measurement, thus maintaining mixing performance while enabling position checking.
Solution Approach 2:
The observation function is extracted from the measurement path. The camera is positioned to observe through the trap hole separately from the light measurement path, allowing specimen position checking without interfering with the integrating sphere's light mixing function during measurement.
2Ease of operation
If a beam splitter is used to send light to both camera and spectrometer, then real-time specimen checking is enabled, but device structure becomes complex
Solution Approach 1:
The camera observation path is extracted from the main light measurement path. Instead of using a beam splitter to divide light between camera and spectrometer, the camera observes through the trap hole which is separate from the light measurement path, eliminating the need for beam splitters and reducing structural complexity.
Solution Approach 2:
The trap hole serves as an intermediary observation point that does not interfere with the light measurement path. It allows camera access to the specimen for positioning purposes while maintaining the integrity of the light path for spectral measurement.
3Ease of operation
If the trap hole remains open for camera observation, then specimen positioning is facilitated, but specular reflection light enters during measurement
Solution Approach 1:
The trap is designed to be movable, opening when camera observation is needed for positioning and closing during measurement to prevent specular reflection light from entering the light measurement path. This dynamic adjustment allows the system to switch between positioning and measurement modes.
Solution Approach 2:
The system provides visual feedback through the camera display for specimen positioning, allowing users to align the specimen properly. Once positioned, the trap closes to eliminate feedback during measurement, ensuring measurement accuracy.
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
Enables quick and accurate specimen positioning, improves measurement efficiency, and allows for seamless switching between SCI and SCE measurements without complex structures, simplifying the device configuration and reducing installation space requirements.
Implementation Method 1
a light-receiving opening part (6) formed at an upper part of the integrating sphere (5)
Implementation Method 2
a trap hole (8) formed in the integrating sphere (5) at a position symmetrical to the measurement opening part (2) with respect to a specimen (100)
Implementation Method 3
an imaging means (9) disposed at a position that allows taking, through the trap hole (8), an image of a specimen (100) facing the measurement opening part (2)
Data Source
AI summary
A colorimetry device includes an integrating sphere having a measurement opening part and a trap hole, a trap disposed to be able to open and close the trap hole, a lid that is non-reflective and disposed to be able to open and close the trap hole, an imaging means disposed at a position that allows taking, through the trap hole, an image of a specimen facing the measurement opening part, and a display means that displays an image taken by the imaging means. The trap is to move to a position at which the trap hole is closed by the trap at a time of measurement of light with an SCI method, the light being reflected from the specimen, and the lid is moved to a position at which the trap hole is closed by the lid at a time of measurement of the light with an SCE method.