Abstract: A method for simultaneously achieving circular and diminishing effects of optical defects and deviations during real time use of optical devices, and, a corresponding device and system for implementing the method thereof. The method features rotating an entire optical device (78), rotating at least one optical part (90) of an entire optical device such as an optical assembly or an optical element (92) during real time viewing or projecting by the optical device, in order to spread and blur the optical defects and deviations present in the at least one optical part of the optical device. In a first embodiment of the method, an optical rotation device is activated and controlled for rotating at least one optical part of an optical device during real time use of a viewing or projecting optical device. In a second embodiment of the method, there is included a step for aligning the optical axis of the at least one optical part of the optical device with respect to the rotation axis.