Compact and high resolution virtual mouse using lens array and light sensor

Abstract

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.

High‐resolution and compact virtual mouse using lens arrays to capture finger images on light sensors

“…The concept of virtual mouse refers to a way users move their finger(s) in a free space instead of using a real mouse or on‐device touch for an electronic device, such as notebook and tablet, as shown in Fig. . The positional information of human finger(s) is detected by the virtual mouse and provided to the device.…”

“…1. [1][2][3][4] The positional information of human finger(s) is detected by the virtual mouse and provided to the device. Therefore, with the aid of a virtual mouse, users can comfortably free their hands from being restricted in the region of touchpad or touchscreen, or get rid of a real mouse while traveling with notebooks.…”