Each of the center and flanking legs have respective first and second longitudinal ends.

The beam 20 has a longitudinal length 21, a longitudinal first end 22, and a longitudinal second end 23.

Each of the horn-type waveguides has a first longitudinal end and a second longitudinal end.

The second longitudinal end of the horn waveguide is arranged on the third longitudinal end of the hollow waveguide.

The second longitudinal end of the horn waveguide is arranged on the third longitudinal end of the hollow waveguide.

Disclosed is a rotational lamp head comprising a housing (1) having a first longitudinal end and a second longitudinal end, with the first longitudinal end of the housing (1) having an opening.

Each longitudinal end has a port.

The second longitudinal end of each horn-type waveguide is arranged at the third longitudinal end of the hollow conductor.

The envelope former partially forms the envelope blanks with a sealed longitudinal end (38) and an open longitudinal end (40).

In at least one example, a mobile cart may include a frame with a first longitudinal end and an opposing second longitudinal end.

A female thread (20) is formed on the inner surface and extends from one longitudinal end to an opposite longitudinal end of the opening (14).

The helically shaped optical path (36) advances about the longitudinal end (16) of the first prism toward a second longitudinal end (18) of the first prism.

The hollow conductor has a third longitudinal end.

A longitudinal end (62) of the longitudinal section (6) is sealed in liquid-tight manner, and the other end is open or can be opened.

The force-generating body has a closed first longitudinal end and is suspended relative to the housing in the area of an opposite second longitudinal end.