Detailed Product Description f-theta lensesmostly used in laser marking ,cutting, engraving machinekinds of ... could get marking area to 600*600MMLense including expand-lease, F-thetha, reflection mirrors (X,Y) expand-leanse X2 X2.5 ... X3 x4 and so on F-theta 200*200; 250*250mm; 300*300mm; 350*350mm and ...