Imaging difference judgment method, device and equipment of optical system

The invention discloses an imaging difference judgment method, device and equipment for an optical system, and the method comprises the steps: determining a plurality of actual optical performance parameters matched with the optical system according to the incidence relation between different pupil diameters D and different eye distances L and the optical system; taking a value, which has the maximum difference with the theoretical optical performance parameter of the optical system, in the plurality of actual optical performance parameters as a target optical performance parameter of the optical system; determining a user use error parameter of the optical system according to the target optical performance parameter of the optical system and the theoretical optical performance parameter of the optical system; according to the user use error parameters of the optical system, the imaging difference of the optical system for different users is judged. The user use error parameter of the optical system is design