Actuating device for operating lamps
AssigneeDräger Medical GmbH
InventorHanno Kretschmann
Life of this patent
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Abstract
An actuating device for operating lamps (1) includes an actuator provided for actuating a number of first light-emitting diodes (6) for generating white light, on the one hand, and a number of second light-emitting diodes (7) for generating single-color light, on the other hand. A control is provided such that only the first light-emitting diodes (6) are switched on in a first operating state of the operating lamp (1) and such that the first light-emitting diodes (6) and the second light-emitting diodes (7) are switched on in a second operating state. The second light-emitting diodes (7) are designed such that a preset color rendering index is greater in the second operating state than in the first operating state of the operating lamp (1).
Claims14
An actuating device for operating lamps, the device comprising:
- light emitting diodes including actuatable first light-emitting diodes for generating a first white light and actuatable second light-emitting diodes for generating a blue light;
- an actuator for actuating the first light-emitting diodes to generate said first white light, and also for actuating the second light-emitting diodes to generate said blue light such that only the first light-emitting diodes are switched on in a first operating state of the operating lamp and that the first light-emitting diodes and the second light-emitting diodes are switched on in a second operating state to generate a second white light, wherein the second light-emitting diodes are designed such that a general color rendering index Ra and a color rendering index R9 is greater than 70, and a color temperature in the second operating state is greater than a color temperature in the first operating state of the operating lamp.
An operating lamp comprising:
- light emitting diodes comprising an actuatable first set of light-emitting diodes for generating a first white light and an actuatable second set of light-emitting diodes for generating a blue light;
- a light module accommodating the first set of light-emitting diodes and the second set of light-emitting diodes, and having a light exit area, said second light-emitting diodes being arranged distributed in an area of a circumferential edge of said light exit area;
- an actuator means for actuating the first set of light-emitting diodes, and also for actuating the second set of light-emitting diodes such that only the first light-emitting diodes are switched on in a first operating state of the operating lamp and that the first light-emitting diodes and the second light-emitting diodes are switched on in a second operating state to generate a second white light, wherein the second light-emitting diodes are such that a general color rendering index Ra and a color rendering index R9 is greater than 70, and a color temperature in the second operating state is greater than a color temperature in the first operating state of the operating lamp.
An operating lamp comprising:
- a plurality of first light-emitting diodes for generating a first white light with a first general color rendering index;
- a plurality of second light-emitting diodes generating a blue light, a combination of said first white light and said blue light creating a second white light, said first and second light emitting diodes being arranged to have said second white light have a second general color rendering index Ra and a color rendering index R9 that is greater than 70, said second white light having a color temperature greater than a color temperature of said first white light;
- a light module accommodating said first light-emitting diodes and said second light-emitting diodes to emit the respective light in a similar direction;
- an actuator for actuating said first light-emitting diodes, and also for actuating said second light-emitting diodes, said actuator selectively switching between a first operating state of the operating lamp with said first light-emitting diodes on and said second light-emitting diodes off, and a second operating state with said first light-emitting diodes and said second light-emitting diodes on.
Dependencies are inferred from the claim text.