Abstract of Papers Presented at Annual Meeting of the Gemmological Society of Japan
2015 Annual Meeting
Conference information

Abstracts of Papers Presented at 2015 Annual Meeting of the Gemmological Society of Japan
Experimental Methods for Estimation of Jewels Suggested as Optical Division and Angle Anisotropy (2)
*Akio KawaguchiHirofumi Ninomiya
Author information
CONFERENCE PROCEEDINGS FREE ACCESS

Pages 17-

Details
Abstract

Regarding facet-cut jewels as polyhedral scatterers, their glair should originate from external light source and their efficiency can be discussed as division of light beam. Then, analysis of patterns of scattered beams given by incident of single beam, which is controlled and simulated for general light environment, can suggest correlation with estimation by observers. "Exponential distribution" found for smaller solid angle of scattered beams recognizes efficiency by larger "light spots"; their numerical tendency can be expected for objective estimation of jewels.

Content from these authors
© The Gemmological Society of Japan
Previous article Next article
feedback
Top