Abstract: An optical arrangement of an imaging device for microlithography, particularly for using light in the extreme UV range, includes an optical element and a holding device for holding the optical element. The optical element includes an optical surface and defines a plane of main extension, in which the optical element defines a radial direction and a circumferential direction. The holding device includes a base element and more than three separate holding units. The holding units are connected to the base element and arranged in a manner distributed along the circumferential direction and spaced apart from one another. The holding units hold the optical element with respect to the base element. Each of the holding units establishes a clamping connection between the optical element and the base element. The clamping connection for each holding unit is separate from the clamping connections of the other holding units.

Abstract: An optical arrangement of an imaging device for microlithography, particularly for using light in the extreme UV range, includes an optical element and a holding device for holding the optical element. The optical element includes an optical surface and defines a plane of main extension, in which the optical element defines a radial direction and a circumferential direction. The holding device includes a base element and more than three separate holding units. The holding units are connected to the base element and arranged in a manner distributed along the circumferential direction and spaced apart from one another. The holding units hold the optical element with respect to the base element. Each of the holding units establishes a clamping connection between the optical element and the base element. The clamping connection for each holding unit is separate from the clamping connections of the other holding units.

Abstract: A guide arrangement for elevators, particularly for vertical elevators. The guide arrangement is arranged in a shaft having a shaft wall. The guide arrangement includes a self-contained inherently stiff rail frame with at least two parallel guide rails which are rigidly connected to each other, the guide arrangement further includes fastening members for connecting the rail frame to the shaft wall, wherein the fastening members are springs.

Abstract: The invention deals with a cable tensioning system for elevators with separate drive cable and support cable lines 10, 11, which both engage at an elevator cabin 12 and also at a counterweight 13, characterized in that the cable tensioning system comprises a rocker 20 configured as a lever and supported at the counterweight 13 or the elevator cad 12, at which rocker the support cable 11 and the drive cable 10 are fastened to be spaced from each other, that the spacing ratio a: b of the attachment points 31, 32 of the cable lines 10, 12 at the rocker 20 from the support point 21 of the rocker 20 at the counterweight 13 or the elevator cab 12 define the cable tension or pull ratio required for the driving capacity.

Abstract: The invention deals with a cable tensioning system for elevators with separate drive cable and support cable lines 10, 11, which both engage at an elevator cabin 12 and also at a counterweight 13, characterized in that the cable tensioning system comprises a rocker 20 configured as a lever and supported at the counterweight 13 or the elevator cab 12, at which rocker the support cable 11 and the drive cable 10 are fastened to be spaced from each other, that the spacing ratio a:b of the attachment points 31, 32 of the cable lines 10, 12 at the rocker 20 from the support point 21 of the rocker 20 at the counterweight 13 or the elevator cab 12 define the cable tension or pull ratio required for the driving capacity.

Abstract: A safety catch device for elevator cars guided on at least one guide rail includes a braking device acting on the at least one guide rail for braking the elevator car and a control device for controlling the braking force of the braking device in dependence on the load and/or deceleration. The control device includes a control mass which is influenced by the acceleration of the elevator car and a brake spring which is deflected in accordance with the position of the control mass. The brake spring is coupled to the control mass and the braking device in such a way that a reduced braking force is applied by the braking device on the at least one guide rail in the case of a high deceleration of the elevator car and an increased braking force is applied by the braking device on the at least one guide rail in the case of a lower deceleration of the elevator car.