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. Author manuscript; available in PMC: 2019 May 15.
Published in final edited form as: Arch Biochem Biophys. 2018 Mar 27;646:46–54. doi: 10.1016/j.abb.2018.03.033

Fig. 2.

Fig. 2

Portable optical devices used for skin chromophore measurements. (a) reflection spectroscopy device and typical reflection spectrum in 400–750 nm wavelength range (Veggie Meter®, Longevity Link Corp.); (b) resonance Raman spectroscopy device and typical Raman spectrum in 900–1750 cm−1 range; (c) device based on diffuse reflection with integrating sphere (Model CM2500d, Konica Minolta, Inc.) with display of melanin and Hb indices.