Virtual mouse based on IR source, lens array and light sensor was designed and implemented. Optical architecture including lens amount, lens pitch, baseline length, sensor length, lens-sensor gap, focal length etc. was carefully designed to achieve low detective error, high resolution, and simultaneously, compact system volume. System volume is 3.1mm (thickness) × 4.5mm (length) × 2, which is much smaller than that of camera-based device. Relative detective error of 0.41mm and minimum resolution of 26ppi were verified in experiments, so that it can replace conventional touchpad/touchscreen. If system thickness is eased to 20mm, resolution higher than 200ppi can be achieved to replace real mouse.

Date Published: 1 June 2016
PDF: 9 pages
Proc. SPIE 9867, Three-Dimensional Imaging, Visualization, and Display 2016, 986718 (1 June 2016);

Published in SPIE Proceedings Vol. 9867:
Three-Dimensional Imaging, Visualization, and Display 2016
Bahram Javidi; Jung-Young Son, Editor(s)