An intraocular lens (IOL) injector for releasing an IOL to be injected into a capsular bag of an eye, the IOL injector having a proximal end and a distal end , the IOL injector comprising: an injector body defining a longitudinal axis and including a hollow shaft ; a spring arranged in the hollow shaft ; a cartridge arranged on the injector body and defining a cavity for holding the IOL ; an injection nozzle arranged on the cartridge at the distal end of the IOL injector; a channel extending through the injector body , the cavity , the cartridge , and the injection nozzle in an axial direction along the longitudinal axis (P); a mechanical speed regulator system configured to control a speed of the releasing of the IOL; a pusher rod engaged via the hollow shaft with the mechanical speed regulator system and arranged in the channel movably in the axial direction by a force generated by the spring to advance the IOL in the axial direction (P) towards the distal end of the IOL injector out of the cavity through the cartridge and the injection nozzle ; a control lever arranged on the injector body in communication with the mechanical speed regulator system ; the mechanical speed regulator system being responsive to an actuation of the control lever ; the mechanical speed regulator system includes a first compound gear , a second compound gear , and a third compound gear , the first compound gear includes a first pinion and the hollow shaft includes a rack ; the first pinion and the rack form a rack and pinion mechanism to mechanically couple the mechanical speed regulator system with the hollow shaft , the first, second, and third compound gears form a gear train , and the gear train has a speed multiplying configuration; characterised in that the mechanical speed regulator system further includes an anchor mechanism with an anchor , and the third compound gear includes an escapement wheel mechanically engaging with the anchor . an injector body defining a longitudinal axis and including a hollow shaft ; a spring arranged in the hollow shaft ; a cartridge arranged on the injector body and defining a cavity for holding the IOL ; an injection nozzle arranged on the cartridge at the distal end of the IOL injector; a channel extending through the injector body , the cavity , the cartridge , and the injection nozzle in an axial direction along the longitudinal axis (P); a mechanical speed regulator system configured to control a speed of the releasing of the IOL; a pusher rod engaged via the hollow shaft with the mechanical speed regulator system and arranged in the channel movably in the axial direction by a force generated by the spring to advance the IOL in the axial direction (P) towards the distal end of the IOL injector out of the cavity through the cartridge and the injection nozzle ; a control lever arranged on the injector body in communication with the mechanical speed regulator system ; the mechanical speed regulator system being responsive to an actuation of the control lever ; the mechanical speed regulator system includes a first compound gear , a second compound gear , and a third compound gear , the first compound gear includes a first pinion and the hollow shaft includes a rack ; the first pinion and the rack form a rack and pinion mechanism to mechanically couple the mechanical speed regulator system with the hollow shaft , the first, second, and third compound gears form a gear train , and the gear train has a speed multiplying configuration; characterised in that the mechanical speed regulator system further includes an anchor mechanism with an anchor , and the third compound gear includes an escapement wheel mechanically engaging with the anchor . <EOS>