Patent ID: 9524058
Filing Date: 2016-12-20
CPC Classification: G01B,G06F

Claim Text:
1. A calibration method, suitable for calibrating a light transceiver module and comprising: disposing a plurality of reflective regions, a plurality of light-absorbing regions and a feature region beside the light transceiver module, wherein the reflective regions and the light-absorbing regions are alternately arranged, the feature region is a region for reflection or a region for absorbing light, wherein when the feature region is the region for reflection, a width of the region for reflection is different from a width of each of the reflective regions, and when the feature region is the region for absorbing light, a width of the region for absorbing light is different from a width of each of the light-absorbing regions; making the light transceiver module emit light toward the reflective regions, the light-absorbing regions and the feature region and sensing images of the reflective regions, the light-absorbing regions and the feature region; and comparing actual orientations of the reflective regions, the light-absorbing regions and the feature region with positions of images formed by the reflective regions, the light-absorbing regions and the feature region on an image sensing surface of the light transceiver module so as to calibrate the actual orientations corresponding to the positions on the image sensing surface.