The present invention relates to an optoelectronic angle sensor (1a) used for confirming the rotation angle around a shaft (6), wherein the optoelectronic angle sensor comprises a disc (2a) which can rotate round the shaft. The disc comprises the following components: codes which basically cover the whole surface; a planar light-sensitive detector (3a); a device used for generating the codes on the detector; and a storing and evaluating component (4a) for confirming the rotation angle. The code generated on the detector is basically whole, in particular the whole image. Through applying a parameter-changing statistical comparison method, the rotation angle is confirmed according to the parameterized electronic reference pattern and the image, wherein, the parameterized electronic reference pattern is provided by the storing and evaluating component.