Patent ID: 8462318

Claim:
A distance-measuring system with a correction function, comprising: a calibrating object; a transflective plate; and a distance-measuring device, respectively having a first known distance and a second known distance between the calibrating object and the transflective plate, the transflective plate disposed between the calibrating object and the distance-measuring device, the distance-measuring device comprising: a light emitting device, for emitting a detecting light having a lighting-error angle; an image sensor, having a sensing-error angle; wherein the detecting light passing through the transflective plate is reflected by the calibrating object and then is transferred into a first reflecting light transmitting to a first imaging location of the image sensor, the detecting light reflected by the transflective plate is transferred into a second reflecting light transmitting to a second imaging location of the image sensor; and a parameter-calculating circuit, for calculating the lighting-error angle and the sensing-error angle according to the first and second known distances, and the first and second imaging locations.