发明名称 |
METHOD OF SPECTROSCOPIC ANALYSIS OF A DIAMOND AND APPARATUS THEREOF |
摘要 |
A method of spectroscopic analysis of a diamond for determining whether the diamond has been artificially treated to change its colour may include: generating light emission from a diamond upon optical excitation at a wavelength equal to or smaller than 680 nm; optically producing a dispersed light emission; detecting the dispersed light emission across a collected spectral region including emission wavelengths of from 670 nm to 735 nm; processing the output signals to produce a spectral intensity distribution as a function of emission wavelengths; analysing the spectral intensity distribution to determine the presence or absence of a spectral pattern including either an intensity peak at 681 nm or a combination of intensity peaks at respective wavelengths 705 nm and 725 nm; if a spectral pattern is present, establishing that the diamond has been treated; and if a spectral pattern is absent, establishing that the diamond has not been treated. |
申请公布号 |
US2017010217(A1) |
申请公布日期 |
2017.01.12 |
申请号 |
US201415121011 |
申请日期 |
2014.02.28 |
申请人 |
UNIVERSITÀ DEGLISTUDI DI MILANO-BICOCCA |
发明人 |
PALEARI Alberto Maria Felice |
分类号 |
G01N21/87;G01N21/65 |
主分类号 |
G01N21/87 |
代理机构 |
|
代理人 |
|
主权项 |
1. A method of spectroscopic analysis of a diamond for determining whether the diamond has been artificially treated to change its colour, the method comprising:
generating light emission from a diamond upon optical excitation at an excitation wavelength equal to or smaller than 680 nm; optically producing a dispersed light emission; detecting the dispersed light emission across a collected spectral region by means of a photodetector device to electrically generate output signals, wherein the collected spectral region comprises emission wavelengths of from 670 nm to 735 nm; processing the output signals to produce a spectral intensity distribution as a function of emission wavelengths; analysing the spectral intensity distribution to determine the presence or absence of a spectral pattern comprising either an intensity peak at 681 nm or a combination of intensity peaks at respective wavelengths 705 nm and 725 nm; if, as a result of analysing, a spectral pattern is determined to be present, establishing that the diamond has been artificially treated to change its colour; and if, as a result of analysing, a spectral pattern is determined to be absent, establishing that the diamond has not been treated to change its colour. |
地址 |
Milan IT |