Abstract: An operating room light fixture with a light fixture housing, in which at least one lighting unit with at least one light source is arranged, with a handle, which is arranged on a side of the light fixture housing facing the operating area, wherein the handle comprises a control element for setting and/or adjusting the luminous intensity of the light source.

Abstract: An operating room light fixture having a first lighting unit including a first light source and an external reflector, a second lighting unit including a second light source and an internal reflector, and a control unit. The second lighting unit is positioned in front of the first lighting unit with respect to the direction in which the light emerges from the light fixture. The control unit may be actuated by a rotary element located in a handle of the light fixture. A heat reflection filter may be provided for adjusting the color temperature of the light fixture to a desired value.

Abstract: An operating room light fixture is provided with two lighting units (3, 4) in a light fixture housing. The first lighting unit (3) is used to generate a surface light and the second lighting unit (4), which is arranged after the first lighting unit (3) in the direction (7) in which the light emerges, generates an in-depth illumination.

Abstract: The present invention pertains to an operating room light fixture with a light fixture housing, in which at least one lighting unit with at least one light source is arranged, with a handle, which is arranged on a side of the light fixture housing facing the operating area, wherein the handle comprises a control element for setting and/or adjusting the luminous intensity of the light source.

Abstract: A device and a process for mixing at least a first gas component with a second gas component is suitable for mixing gases in a portable respirator. The gas mixer device makes it possible to bring about the particularly necessary concentration of the first gas component at different volume flows of the gas mixture generated. The gas mixer device has a plurality of ejectors (1, 2) of different sizes, which are designed according to the principle of a venturi nozzle. The ejectors have respective propellant gas connections (3, 9) for feeding the first gas component from a propellant gas container (4) and suction channels (5, 10) for feeding the second gas component from a mixing chamber (6), as well as gas outlets (8, 11) to a respiration connection (7). An evaluating and control unit (17) evaluates the signals of two volume flow sensors (15, 16) and correspondingly actuates proportional valves (13, 14) arranged in the propellant gas connections (3, 9) for feeding the first gas component.

Abstract: A device and a process for mixing at least a first gas component with a second gas component is suitable for mixing gases in a portable respirator. The gas mixer device makes it possible to bring about the particularly necessary concentration of the first gas component at different volume flows of the gas mixture generated. The gas mixer device has a plurality of ejectors (1, 2) of different sizes, which are designed according to the principle of a venturi nozzle. The ejectors have respective propellant gas connections (3, 9) for feeding the first gas component from a propellant gas container (4) and suction channels (5, 10) for feeding the second gas component from a mixing chamber (6), as well as gas outlets (8, 11) to a respiration connection (7). An evaluating and control unit (17) evaluates the signals of two volume flow sensors (15, 16) and correspondingly actuates proportional valves (13, 14) arranged in the propellant gas connections (3, 9) for feeding the first gas component.