Optical influence of different standard illuminants on green nephrite's color From Manasi

Hong-mei Du; Ying Guo

doi:10.1117/12.870663

12 November 2010 Optical influence of different standard illuminants on green nephrite's color From Manasi

Hong-mei Du, Ying Guo

Proceedings Volume 7844, Semiconductor Lasers and Applications IV; 784411 (2010) https://doi.org/10.1117/12.870663
Event: Photonics Asia 2010, 2010, Beijing, China

Abstract

To evaluate the optical influence of illuminant on green color with low chroma (C^*≈1~12) of nephrite from Manasi, three different standard illuminant-daylight D65, incandescent light A and fluorescent light F2 (CWF) were applied during the experiment. Two-way ANOVA was used to analyze the illuminants tested considering the coordinates of lightness L^* and chromaticity a^*, b^*. The results indicate significant differences for L^*, a^* and b^* (p<0.05). Only L^* between D65 and F2 didn't vary significantly (p=0.691) with the multiple comparisons (LSD- test). The green color with higher C^*and L^* were found to be easily influenced by illuminant, and the color-difference was larger and the color appearance varied more obviously while the illuminant as changed. The changes in color parameters and visual effects showed that the D65 light illuminant is more suitable for the evaluation of green nephrite's color grading while light source A can be used during trading.

Citation Download Citation

Hong-mei Du and Ying Guo "Optical influence of different standard illuminants on green nephrite's color From Manasi", Proc. SPIE 7844, Semiconductor Lasers and Applications IV, 784411 (12 November 2010); https://doi.org/10.1117/12.870663

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available