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Updated: Apr 3, 2026

Diffuse Reflectance Spectroscopy: Getting the Capillary Refill Test Under One's Thumb
Published on: December 2, 2017
Simple LED spectrophotometer for analysis of color information
Ji-Sun Kim1, A-Hee Kim1, Han-Byeol Oh1
1Department of Biomedical Engineering, BK21 Plus Research Institute of Biomedical Engineering, College of Biomedical and Health Science, Konkuk University, Chungju, Republic of Korea.
Abstract:
A spectrophotometer is the basic measuring equipment essential to most research activity fields requiring samples to be measured, such as physics, biotechnology and food engineering. This paper proposes a system that is able to detect sample concentration and color information by using LED and color sensor. Purity and wavelength information can be detected by CIE diagram, and the concentration can be estimated with purity information. This method is more economical and efficient than existing spectrophotometry, and can also be used by ordinary persons. This contribution is applicable to a number of fields because it can be used as a colorimeter to detect the wavelength and purity of samples.
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