Abstract: The invention relates to a system comprising at least two medical devices and to a method for controlling a system comprising at least two medical devices, the at least two medical devices each comprising at least one near-field wireless communication interface, which near-field wireless communication interfaces are arranged in or on the medical devices in such a way that, when the medical devices are arranged in at least one particular arrangement relative to one another, a near-field wireless communication interface of one device is arranged within the communication range of a near-field wireless communication interface of another device.

Abstract: An optical sensor having a light source (3) and a structured front plate (11), which expands the focused light beam (9) of the light source (3) at least in one direction. In one advantageous construction, the structure includes an array with several cylindrical lenses (11). They are preferably constructed by hot stamping the surface the front plate (11). The expanded light beam (9) is suitable, in particular, for detecting narrow objects (1) or edges. The light source (3) and the front plate (11) are each aligned relative to the sensor housing (12).

Abstract: An optical sensor (1) having a light source (3) and a device for homogenizing the light beam (9) generated by the light source (3) is provided. Several optical elements with different focal distances cause a homogenization of the light beam (9) in its propagation direction. For homogenizing the light beam (9) perpendicular to its propagation direction, several optical elements are used with alternating focal lengths or widths arranged one next to the other. These are preferably constructed as an array on a front plate.

Abstract: An optical sensor having a light source (3) and a structured front plate (11), which expands the focused light beam (9) of the light source (3) at least in one direction. In one advantageous construction, the structure includes an array with several cylindrical lenses (11). They are preferably constructed by hot stamping the surface the front plate (11). The expanded light beam (9) is suitable, in particular, for detecting narrow objects (1) or edges. The light source (3) and the front plate (11) are each aligned relative to the sensor housing (12).