Operating table lamp

• US 7,614,763 B2
• Filed: 02/28/2005
• Issued: 11/10/2009
• Est. Priority Date: 02/28/2004
• Status: Active Grant

• Current Assignee: Trumpf Medizin Systeme GmbH & Co. KG (Baxter International Inc.)
• Original Assignee: Trumpf Medizin Systeme GmbH & Co. KG (Baxter International Inc.)
• Inventors: Tahbazian, Kamran, Hiemer, Willibald, Leibinger, Berthold, Marka, Rudolf, Bartenbach, Christian, Vogl, Markus
• Primary Examiner(s): Truong; Bao Q
• Application Number:
  US11/067,580
• Publication Number:
  US 20050231945A1
• Time in Patent Office: 1,716 Days
• Field of Search: 362/231, 362/235, 362/552, 362/572, 362/293, 362/804, 362/351, 362/295, 362/394, 362/251, 362/181
• US Class Current: 362/235
• CPC Class Codes: F21V 21/403 for operation or dentist lamps
• CPC Class Codes: F21W 2131/205 for operating theatres
• CPC Class Codes: F21Y 2113/13 comprising an assembly of point-like light sources
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: H05B 45/20 Controlling the colour of the light

Abstract

An operating lamp includes at least one white light source for illuminating an operating area, a plurality of colored light sources for illuminating the operating area, and a controller adapted for dimming a light intensity and controlling a spectrum of a combined illumination from the white light source and the colored light sources on the operating area.

Claims

1. An operating lamp comprising:

at least one white light source for illuminating an operating area;

a plurality of colored light sources for illuminating the operating area; and

a controller for dimming a light intensity and controlling a spectrum of a combined illumination from the white light source and the colored light sources on the operating area,

wherein the controller is configured to enable an operator to control the white and colored light sources in two independent control modes, including

a first mode in which the controller changes an overall intensity of light produced by the operating lamp while maintaining an overall color temperature of the produced light, and

a second mode in which the controller maintains a constant overall intensity of light produced by the operating lamp while changing an overall color temperature of the produced light.

2. The operating lamp of claim 1, wherein the white light source is a light source selected from the group consisting of an LED, a halogen lamp, and a gas discharge lamp.

3. The operating lamp of claim 1, wherein the colored light sources are light sources selected from the group consisting of LEDs, a halogen lamps and color filters, and gas discharge lamps and color filters.

4. The operating lamp of claim 1, further comprising lenses between the light sources and the operating area, wherein the lenses are adapted to provide uniform emission of light from the lamp and focus the light onto the operating area.

5. The operating lamp of claim 1, wherein the controller is configured to store suitable control parameters as characteristic parameters.

6. The operating lamp of claim 1 wherein the controller is configured to preset a basic setting of the color temperature to 4500 K so that this color temperature is automatically generated when the operating lamp is switched on.

7. An operating lamp comprising:

a means for illuminating an operating area with white light;

means for illuminating the operating area with colored light;

a dimming means for dimming a light intensity from the illumination means at the operating area; and

a control means for controlling a spectrum of light from the illumination means at the operating area

wherein the dimming means is configured to dim the intensity of the light by controlling an amount of electrical power that powers the illumination means and wherein the dimming means and the control means are configured to, in a first mode, maintain a color temperature of the light on the operating area while dimming the intensity of the light when dimming the intensity via controlling the amount of electrical power and to, in a second mode, maintain an intensity of the light on the operating area while changing the color temperature of the light on the operating area.

8. The operating lamp of claim 7, further comprising lenses between the illumination means and the operating area, wherein the lenses are adapted to provide uniform emission of light from the lamp and focus the light onto the operating area.

9. A method of controlling an operating lamp for illuminating an operating area, the method comprising:

providing light from a white light source of the lamp to the operating area;

providing light from a plurality of colored light sources of the lamp to the operating area;

controlling an intensity of light at the operating area provided from the white light source and the colored light sources by controlling an amount of electrical power that powers the light sources;

controlling a spectrum of the light at the operating area provided from a combination of the white light source and the colored light sources;

in a first operating mode, maintaining a color temperature of the light at the operating area while changing the intensity of the light by controlling an amount of electrical power that powers the light sources;

switching to a second operating mode; and

,

in the second operating mode, maintaining the intensity of the light at the operating are while changing the color temperature of the light.

10. The method of claim 9, further comprising focusing light from each of the light sources with a lens, wherein the lenses are adapted to provide uniform emission of light from the lamp and focus the light onto the operating area.

11. An operating lamp comprising:

at least one white light source for illuminating an operating area;

a plurality of colored light sources for illuminating the operating area; and

a controller for dimming a light intensity and controlling a spectrum of a combined illumination from the white light source and the colored light sources on the operating area,

wherein the controller is configured to enable an operator to control the white and colored light sources in two independent modes, including

a first mode in which the controller changes an overall intensity of light produced by the operating lamp while maintaining an overall color reproduction of the produced light, and

a second mode in which the controller maintains a constant overall intensity of light produced by the operating lamp while changing an overall color reproduction of the produced light.

12. The operating lamp of claim 11, wherein the white light source is a light source selected from the group consisting of an LED, a halogen lamp, and a gas discharge lamp.

13. The operating lamp of claim 11, wherein the colored light sources are light sources selected from the group consisting of LEDs, a halogen lamps and color filters, and gas discharge lamps and color filters.

14. The operating lamp of claim 11, further comprising lenses between the light sources and the operating area, wherein the lenses are adapted to provide uniform emission of light from the lamp and focus the light onto the operating area.

15. The operating lamp of claim 11, wherein the controller is configured to store suitable control parameters as characteristic parameters.

16. The operating lamp of claim 11, wherein the controller is configured to preset a basic setting of the color temperature to 4500 K so that this color temperature is automatically generated when the operating lamp is switched on.

17. An operating lamp comprising:

a means for illuminating an operating area with white light;

means for illuminating the operating area with colored light;

a dimming means for dimming a light intensity from the illumination means at the operating area; and

a control means for controlling a spectrum of light from the illumination means at the operating area

wherein the dimming means is configured to dim the intensity of the light by controlling an amount of electrical power that powers the illumination means and wherein the dimming means and the control means are configured, in a first mode, to maintain a color reproduction of the light on the operating area while dimming the intensity of the light when dimming the intensity via controlling the amount of electrical power and, in a second mode, to maintain an intensity of the light on the operating area while changing the color reproduction of the light on the operating area.

18. The operating lamp of claim 17, further comprising lenses between the illumination means and the operating area, wherein the lenses are adapted to provide uniform emission of light from the lamp and focus the light onto the operating area.

19. A method of controlling an operating lamp for illuminating an operating area, the method comprising:

providing light from a white light source of the lamp to the operating area;

providing light from a plurality of colored light sources of the lamp to the operating area;

controlling an intensity of light at the operating area provided from the white light source and the colored light sources by controlling an amount of electrical power that powers the light sources;

controlling a spectrum of the light at the operating area provided from a combination of the white light source and the colored light sources;

in a first operating mode, maintaining a color reproduction of the light at the operating area while changing the intensity of the light by controlling an amount of electrical power that powers the light sources;

switching to a second operating mode; and

,

in the second operating mode, maintaining the intensity of the light at the operating are while changing the color reproduction of the light.

20. The method of claim 19, further comprising focusing light from each of the light sources with a lens, wherein the lenses are adapted to provide uniform emission of light from the lamp and focus the light onto the operating area.