Method to characterize cut gemstones using optical coherence tomography

The invention includes an improvement in a method of assessing a gemstone having at least one planar face with an internally reflecting surface including the steps of optically modifying the at least one planar face of the gemstone to return a sample beam from an internally reflecting plane corresponding to the at least one planar face to an optical coherence tomography (OCT) system; selectively directing the sample beam from an optical coherence tomography (OCT) system onto the gemstone; and generating an OCT image map of the gemstone to determine volume, gem carat weight and/or quality.

Read Full Article

Bookmark or Share this article

Login to comment.

System for real time, non-invasive metrology of microfluidic chips also written by Zhongping Chen
High resolution optical coherence tomography with an improved depth range using an axicon lens also written by Zhongping Chen
System for medical examination or treatment also published in uspto.gov
Imaging transverse flow velocity using spectral bandwidth of the doppler frequency shift in phase-resolved optical doppler tomography also written by Zhongping Chen
Method and apparatus for optical Doppler tomographic imaging of fluid flow velocity in highly scattering media also written by Zhongping Chen
Beyond biomedicine: a review of alternative applications and developments for optical coherence tomography also categorized in NDE/NDT
Phase-resolved optical coherence tomography and optical doppler tomography for imaging fluid flow in tissue with fast scanning speed and high velocity sensitivity also written by Zhongping Chen
Sub-surface imaging under paints and coatings using early light spectroscopy also categorized in NDE/NDT
Selectable eccentric remodeling and/or ablation of atherosclerotic material also published in uspto.gov
Ultrahigh-Resolution Transversal Polarization-Sensitive Optical Coherence Tomography: Structural Analysis and Strain-Mapping also categorized in NDE/NDT