Cartesian positioning device and laser-machining head having same

A Cartesian positioning device for positioning an optics for a laser machining head, comprising:

• a support element;
• an optics socket for holding the optics;
• a y slider arranged on the support element, the y slider being movable in a y direction;
• an x slider arranged next to the y slider on the support element, the x slider being movable in the y direction;
• a single linear guide unit extending in the x direction and directly interconnecting the optics socket to the y slider such that the optics socket is movable in the x direction relative to the y slider by the linear guide unit;
• a L-shaped element with one or more guide slots or guide pins for translating y movement to x movement, the element interconnecting the optics socket with the x slider such that movement of the x slider in the y direction is translated into movement of the optics socket in the x direction;
• wherein the optics socket is connected to the x slider only by the element for translating y movement to x movement and the optics socket is connected to the y slider only by the single linear guide unit.