Patent ID: 8204275

Claim:
An optical positioning apparatus adapted for determining a position of an object in a three-dimensional coordinate system which has a first axis, a second axis and a third axis which are perpendicular to one another, comprising: a host device having a first optical sensor and a second optical sensor which are located along the first axis with a first distance therebetween, the host device further having a processor connected with the first and the second optical sensors; and a calibrating device placed in the sensitivity range of the first and the second optical sensors with a second distance between an origin of the second axis and a coordinate of the calibrating device projected in the second axis, the first and the second optical sensors sensing the calibrating device to make the processor execute a calibrating procedure, then the first and the second optical sensors sensing the object to make the processor execute a positioning procedure for further determining the position of the object in the three-dimensional coordinate system; wherein the host device further includes a control unit connected between the optical sensors and the processor, and the control unit includes a phase-locked loop connected to the optical sensors for actuating the optical sensors, a frequency generator connected with the optical sensors for providing a work frequency thereto, a parallel-to-serial converter connected with the optical sensors for receiving image signals of the calibrating device and the object sensed by the optical sensors and then transmitting the image signals to the processor, and a buffer connected with the parallel-to-serial converter for temporarily memorizing the image signals received by the parallel-to-serial converter.