Human eye color difference threshold measurement system

Lin Liu; Taogeng Zhou

doi:10.1117/12.2034606

31 December 2013 Human eye color difference threshold measurement system

Lin Liu, Taogeng Zhou

Proceedings Volume 9042, 2013 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments; 90420S (2013) https://doi.org/10.1117/12.2034606
Event: International Conference on Optical Instruments and Technology (OIT2013), 2013, Beijing, China

Abstract

The human eye has the ability to distinguish millions of colors, with this feature we can identify very subtle color differences, and the measurement of human eye color difference threshold can provide a visual function diagnosis for testee. In recent years, people begin to focus on studies on visual threshold diagnostic equipment. This paper proposes a human eye color difference threshold measurement system which is based on dual integrating sphere. The system includes two pairs of dual integrating sphere and color control module. Dual integrating sphere uses to mix and produce color, and palette unit which produces primary colors (red (R), green (G), blue (B)) is embedded in dual integrating sphere. At the same time, the embedded palette unit which produces cyan (C), magenta (M), and yellow (Y) expands color area that the system can generate. One optical path based on dual integrating sphere generates standard color, the other path produces the matching color which is similar to a standard color. In the high-precision closed-loop color control module, photoelectric switch records stepper motor’s origin position and limits move displacement. Precision stepper motor pushes the light-blocking panel of the palette unit to a predetermined position, while real-time monitoring the position of the light-blocking panel and mixing the ideal controllable color. Two colors that the system generates are projected onto the same target area. Subjects make a judgment on color difference threshold by observing the target eventually.

Citation Download Citation

Lin Liu and Taogeng Zhou "Human eye color difference threshold measurement system", Proc. SPIE 9042, 2013 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments, 90420S (31 December 2013); https://doi.org/10.1117/12.2034606

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KEYWORDS

Integrating spheres

Color difference

Eye

Visualization

Color centers

Optical filters

Diagnostics

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