Patent ID: 9116554
Filing Date: 2015-08-25
Classification: G01B,G06F

Abstract:
1. A portable input device, comprising: a casing comprising a reflecting member; a light sensing module movably mounted on the reflecting member and exposed from the casing, the light sensing module comprising a main body, a lighting member and a sensor, the lighting member and the sensor both facing the reflecting member, the lighting member and the sensor being mounted on two opposite sides of the main body, the main body comprising a light penetrating hole, an incident hole and an emergent hole, the light penetrating hole facing the reflecting member, the two opposite ends on the incident hole facing an end of the light penetrating hole and the lighting member, and the two opposite ends of the emergent hole facing the other end of the light penetrating hole and the sensor, the lighting member adapted for emitting light to the reflecting member, and the sensor adapted for receiving the light reflected by the reflecting member and configured for transmitting a sensing signal; and a printed circuit board mounted on the casing and electrically connected to the light sensing module, and the printed circuit board configured for processing the sensing signal to compute a value of movement of the light sensing module moving with respect to the reflecting member.