Coded disc precision processing method in photoelectric encoder, photoelectric encoder and correction equipment

The invention discloses a code disc precision processing method in a photoelectric encoder, the photoelectric encoder and correction equipment, and the method comprises the steps: determining that a first code disc rotates from a first scribed line to a second scribed line, enabling the first code disc and the second code disc to coaxially rotate under the driving of the same motor, and enabling the resolution of the second code disc to be higher than the resolution of the first code disc; the rotation angle of the second code disc is measured, and the angle is the angle measured through the scribed line on the second code disc under the condition that the first code disc rotates from the first scribed line to the second scribed line; and the angle value between the first scribed line and the second scribed line is adjusted according to the rotation angle of the second code disc. According to the invention, the problem that the actual application of the optical code disc is affected due to insufficient precis