Abstract: Lens holding device holding an optical lens at its edge during a dip coating in a dip coating bath. First elastic lens holder having first lens edge holder holds the optical lens at a right edge of the optical lens, second elastic lens holder with second lens edge holder holds the optical lens at a left edge of the optical lens, and a circumferential frame with a third lens edge holder holds the optical lens at a lower edge of the optical lens. The circumferential frame has first and second lateral frame portions such that when the lens holder is raised out of the dip coating bath, waves caused at a surface of the dip coating bath are damped by the right or left lens edge holder, respectively.

Abstract: The invention relates to a compensating coupling comprising a coupling element arranged between a first machine element and a second machine element as a torque-transmitting component. The coupling element has an annular body and on each of the end faces of which a coupling section for torque-transmitting interaction with one of the machine parts is formed, wherein each coupling section has two coupling surfaces parallel to each other. All coupling surfaces of both coupling sections are parallel to each other, and at least one of the coupling sections is designed as a pair of lugs.

Abstract: Lens holding device holding an optical lens at its edge during a dip coating in a dip coating bath. First elastic lens holder having first lens edge holder holds the optical lens at a right edge of the optical lens, second elastic lens holder with second lens edge holder holds the optical lens at a left edge of the optical lens, and a circumferential frame with a third lens edge holder holds the optical lens at a lower edge of the optical lens. The circumferential frame has first and second lateral frame portions such that when the lens holder is raised out of the dip coating bath, waves caused at a surface of the dip coating bath are damped by the right or left lens edge holder, respectively.

Abstract: The invention relates to a compensating coupling comprising a coupling element arranged between a first machine element and a second machine element as a torque-transmitting component. The coupling element has an annular body and on each of the end faces of which a coupling section for torque-transmitting interaction with one of the machine parts is formed, wherein each coupling section has two coupling surfaces parallel to each other. All coupling surfaces of both coupling sections are parallel to each other, and at least one of the coupling sections is designed as a pair of lugs.