Gemstone Testing Apparatus with Multi-Source UV Illumination
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Solution Overview
Problem
Existing gemstone testing apparatuses face challenges in accurately differentiating between diamonds and moissanites due to similarities in physical properties, leading to inaccurate conductivity measurements and limited lighting options that restrict probe placement, affecting testing accuracy.
Innovation Solution
A handheld gemstone testing apparatus equipped with multiple ultraviolet light sources arranged symmetrically around a test probe, a photodetector, and a processor unit that measures light intensity to determine whether a specimen reflects or absorbs UV light, allowing for accurate differentiation between diamonds and moissanites, and featuring a pressure switch for power-efficient operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a single light source is used in existing gemstone testing apparatuses, then the device complexity is reduced, but the lighting coverage is insufficient which restricts probe placement options and affects testing accuracy
Solution Approach 1:
The single light source is segmented into multiple light sources (first light source and second light source) positioned at different locations. Each light source independently illuminates the gemstone specimen from its position, ensuring that regardless of where the probe contacts the specimen, sufficient light is available for accurate testing.
Solution Approach 2:
Multiple light sources are combined within a single testing apparatus housing, working together to provide comprehensive illumination coverage. The merged system of multiple light sources replaces the insufficient single light source while maintaining integration within the portable device structure.
2Adaptability or versatility
If the probe is placed away from the light source in existing apparatuses, then the testing area is expanded, but the light exposure becomes insufficient reducing measurement accuracy
Solution Approach 1:
The illumination system is segmented into multiple spatially distributed light sources. The first light source and second light source are positioned at different locations around the probe, ensuring that when the probe is placed at various positions on the gemstone specimen, at least one light source maintains adequate illumination on the testing area.
Solution Approach 2:
The lighting system transitions from a single-point light source to a multi-dimensional arrangement of light sources surrounding the probe. This spatial distribution in multiple dimensions ensures comprehensive coverage regardless of the probe's specific placement position on the specimen surface.
3Ease of operation
If thermal conductivity measurement is used to differentiate diamonds and moissanites, then the testing method is simple, but the accuracy is insufficient due to similar physical properties of these gemstones
Solution Approach 1:
The apparatus utilizes optical property differences between diamonds and moissanites by measuring light reflection and absorption characteristics. Different gemstone materials exhibit distinct optical responses to UV light illumination, allowing differentiation based on these optical signatures rather than relying solely on thermal conductivity.
Solution Approach 2:
The testing approach changes from measuring thermal conductivity to measuring optical parameters (light reflection and absorption). By changing the measurement parameter from thermal to optical properties, the system achieves better differentiation accuracy between diamonds and moissanites while maintaining operational simplicity.
4Illumination intensity
If multiple light sources are added to improve lighting coverage, then the illumination intensity increases, but the power consumption increases
Solution Approach 1:
The multiple light sources are controlled to operate periodically or intermittently rather than continuously. The controller activates light sources only when needed for measurement, reducing overall power consumption while maintaining sufficient illumination intensity during actual testing operations.
Solution Approach 2:
The system intelligently manages power distribution among multiple light sources based on operational needs. The controller optimizes which light sources are active at any given time, allowing the system to self-regulate power consumption while ensuring adequate lighting coverage is maintained during testing.
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
The apparatus provides reliable and efficient differentiation between diamonds and moissanites by ensuring sufficient light exposure regardless of probe placement, enhancing testing accuracy and power management.
Implementation Method 1
a first end of the test probe is adapted for receiving light rays from the specimen and for transmitting the light rays to a second end of the test probe
Implementation Method 2
The plurality of light sources is provided on at least two sides of the test probe, each light source being inclined at a predetermined angle in order to direct the light rays towards an area that is in the vicinity of the first end of the test probe
Data Source
AI summary
The application provides a gemstone testing apparatus for testing a specimen. The gemstone testing apparatus includes a handheld casing, a plurality of light sources, a test probe, a photodetector, a processor unit, and a display unit. The test probe is placed at one end of the handheld casing. A first end of the test probe is placed outside the handheld casing. The plurality of light sources is provided for emitting light rays towards an area that is in the vicinity of the first end. The first end is adapted for receiving light rays from the specimen and for transmitting the light rays to a second end of the test probe. The photodetector is arranged to measure an intensity of the light rays from the second end. The processor unit is provided for determining a material of the specimen in accordance to a measurement of the intensity of the light rays.