Abstract

We report on vein imaging simulation studies using Zemax OpticStudio simulation software. These simulations are done using a 9-layer skin model. All the parameters save the thickness are wavelength dependent, and the simulation was considered at three different wavelengths - 650nm, 780nm and 850nm. For the vein in a given layer and at a given incident wavelength, the source-lens-detector setup was placed at various angles. Simulation results show the angle-dependent penetration of near-infrared (NIR) light into the skin and provide design inputs on the optimum wavelength and angle for vein illumination.

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