SEAL FOR OPTICAL ELEMENTS

原文（中文）

The present disclosure relates to a holder and a method of using an optical element, where the holder comprises a drawer having a base plate having an opening above which a seat is arranged in which an optical element is arranged, wherein a seal is arranged between a lower edge of the optical element and an inner lower end of the opening of the base plate of the drawer and a pressure ring is arranged around the seat, which has at least one projection on its underside which engages in at least one recess on the upper side of the base plate, and where the bottom of the at least one recess has a ramp with a seamlessly changing height in relation to an underside of the base plate. A laser processing head for laser material processing comprises at least one holder as described above.