Figure 2: Sample arm. This image demonstrates the design of the sample arm that is mounted on a typical microscope stand. This system uses two identical semi-Plössl lenses as scan and tube lenses. The cross section shows the optics including galvanometric mirrors, scan and tube lens mechanisms, and the infrared dichroic mirror. OCT collimator, custom mounts, commercial microscope stand, scan head, OCT beam, scan lens, lens tube, tube lens, dichroic mirror, visible port, objective lens, and galvanometric mirrors. The SOLIDWORKS designs of lens tubes and cage cube-mounted beam splitters are adapted from Thorlabs (Thorlabs, NJ, USA). The microscope stand model has been modified from [45].