Source: https://www.researchgate.net/profile/Benoit_Rosa2/publication/261415704_Mechanical_design_of_a_distal_scanner_for_confocal_microlaparoscope_A_conic_solution/links/588cfd1c45851567c93e1bd0/Mechanical-design-of-a-distal-scanner-for-confocal-microlaparoscope-A-conic-solution.pdf