Gemstone Tester with Light Guide for Heat-Free Illumination
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Solution Overview
Problem
Conventional gemstone testers are cumbersome, require user expertise, and cannot accurately differentiate between various gemstones or measure fluorescence, as they often generate heat affecting conductivity measurements and lack multi-functional capabilities.
Innovation Solution
A multi-functional precious stone testing apparatus with a LED light unit that illuminates without heating the conductive probe, a UV light source for fluorescence measurement, and a sensor to classify gemstones like diamond, Moissanite, and metal, featuring independent operation modes and a user-friendly interface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If an illumination unit is positioned close to the testing probe to provide illumination, then the illumination intensity at the testing probe is improved, but heat is transmitted to the testing probe affecting conductivity measurement accuracy
Solution Approach 1:
A light guide member is introduced as an intermediary component between the LED light unit and the testing probe. The light guide member transmits light from the LED to illuminate the testing probe area while physically separating the heat-generating LED from the temperature-sensitive testing probe, thus mediating between illumination needs and measurement accuracy requirements
Solution Approach 2:
The patent replaces direct thermal contact illumination with optical field transmission through the light guide member. Instead of relying on thermal radiation or direct proximity heating, the system uses guided light transmission to achieve illumination without thermal transfer, substituting a mechanical/thermal approach with an optical one
2Adaptability or versatility
If a conventional gemstone tester is used, then thermal conductivity testing is possible, but the device cannot measure fluorescence or test multiple gemstone types simultaneously
Solution Approach 1:
The testing apparatus is designed with multiple functional modules integrated into a single device: a conductive probe for thermal/electrical conductivity testing, a UV light source for fluorescence measurement, and an LED light unit for visual inspection. This multi-functional design allows one device to perform multiple gemstone characterization functions that previously required separate instruments
Solution Approach 2:
The patent merges previously separate testing functions (thermal conductivity testing, electrical conductivity testing, fluorescence measurement, and visual inspection) into a single integrated apparatus. The handling body houses all these modules, allowing users to perform comprehensive gemstone analysis with one device rather than carrying multiple specialized tools
3Illumination intensity
If the LED light unit is positioned close to the conductive probe for illumination, then the illumination effectiveness is improved, but heat from the LED affects the conductivity measurement
Solution Approach 1:
The light guide member serves as a thermal isolator and optical transmitter, positioned between the LED light unit and the conductive probe. It allows optical energy to reach the probe area for effective illumination while blocking thermal energy transfer, thus maintaining the probe temperature during illumination
Solution Approach 2:
The light guide member can be implemented as a thin, flexible optical component that transmits light while providing thermal isolation. This thin-film or shell-like structure allows close proximity positioning for effective illumination while maintaining thermal separation to protect the temperature-sensitive conductive probe
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 accurate classification of gemstones and fluorescence measurement without heat interference, simplifying operations and reducing the need for multiple testers, while enhancing testing accuracy and user convenience.
Implementation Method 1
a LED light unit for providing an illumination at the conductive probe when the conductive probe contacts with the testing object without substantially transmitting heat from the LED light unit to the conductive probe
Implementation Method 2
a UV light source for generating a UV light beam toward the testing object to measure the fluorescence of the testing object
Implementation Method 3
a conductive probe for determining a thermal conductivity or an electrical conductivity of the testing object when contacting the testing object
Implementation Method 4
a conductive probe for determining a thermal conductivity or an electrical conductivity of the testing object when contacting the testing object
Data Source
AI summary
A multi-functional precious stone testing apparatus includes a portable housing, a testing unit, and an indication unit. The portable housing includes a hand-held casing and a probe casing extended from a front end of the hand-held casing. The testing unit includes a conductive probe, a sensor, and a UV light source for emitting UV light beam, so as to allow the sensor to sense the UV reflected and refracted by a testing object for determining various qualities of the testing object.