Lamp

• US 20060193133A1
• Filed: 07/25/2005
• Published: 08/31/2006
• Est. Priority Date: 02/25/2005
• Status: Abandoned Application

• Current Assignee: ERCO Leuchten GmbH
• Original Assignee: ERCO Leuchten GmbH
• Inventors: Von Der Brelie, Jens
• Application Number:
  US11/189,104
• Publication Number:
  US 20060193133A1
• Time in Patent Office: Days
• US Class Current: 362/276
• CPC Class Codes: H05B 45/00 Circuit arrangements for operating light-emitting diodes [LED]
• CPC Class Codes: H05B 45/20 Controlling the colour of the light
• CPC Class Codes: H05B 45/22 using optical feedback
• CPC Class Codes: H05B 45/28 using temperature feedback
• CPC Class Codes: H05B 45/40 Details of LED load circuits
• CPC Class Codes: H05B 47/18 via data-bus transmission
• CPC Class Codes: H05B 47/20 Responsive to malfunctions or to light source life; for protection

Abstract

A lamp, luminaire, lamp system or the like containing at least one light source which is associated with a memory individual thereto and in which a data set is recorded that describes at least one characteristic of this light source, preferably the color value or spectrum or the maximum light current or lumen output or a temperature dependency or aging dependency thereof.

Claims

1. A lamp comprising at least one light source controllably addressable through a signal line;

and a memory containing a data set describing at least one characteristic of said light source.

2. The lamp defined in claim 1 wherein the data set contains a measured value of a parameter of said light source.

3. The lamp defined in claim 2 wherein the data set includes information as to a maximum measured light current of said light source.

4. The lamp defined in claim 3 wherein the data set includes information as to an exact light color and/o wavelength and/or spectrum of said light source.

5. The lamp defined in claim 2 wherein said data set includes information as to a temperature dependent property of said light source.

6. The lamp defined in claim 5, further comprising a sensor for detecting a temperature affecting the operation of said light source.

7. The lamp defined in claim 2 wherein said data set includes information as to an aging-dependent characteristic of the light source.

8. The lamp defined in claim 7 wherein said memory is connected with a device for detecting an operating duration of the light source.

9. The lamp defined in claim 2 wherein said data set is written into the memory upon manufacture.

10. The lamp defined in claim 2, further comprising a controller is connected with said signal line.

11. The lamp defined in claim 10 wherein said lamp is connected to a current supply line.

12. The lamp defined in claim 10 wherein said controller communicates with the lamp with control signals in accordance with the DALI protocol.

13. The lamp defined in claim 10 wherein the lamp is provided with a DALI electronic control unit addressable by said controller.

14. The lamp defined in claim 13 wherein said electronic control unit is connected with the voltage supply line and the signal line.

15. The lamp defined in claim 14 wherein said light source is connected with the electronic control unit.

16. The lamp defined in claim 15 wherein said memory is located in said electronic control unit.

17. The lamp defined in claim 16 wherein said memory is readable by the controller.

18. The lamp defined in claim 17 wherein the data set is transmissible over the control line.

19. The lamp defined in claim 18 wherein the controller transmits control signals to said lamp upon reset of the data set based upon properties of said light source.

20. The lamp defined in claim 10 wherein the controller uses the data set for a correction to control signals transmitted by said controller.

21. The lamp defined in claim 20 wherein the memory can be overwritten upon readout of said data set.

22. The lamp defined in claim 16 wherein the memory is a light scene memory of a DALI electronic control device.

23. The lamp defined in claim 15 wherein said memory is a component of a separate electronic circuit element which is connected with the electronic control device and the signal line.

24. The lamp defined in claim 23 wherein the component is located in a housing of the lamp.

25. The lamp defined in claim 24 wherein said component is connected ahead of the electric control device.

26. The lamp defined in claim 25 wherein the component corrects or matches control signals received from the controller based upon the data set and transmits the corrected or matched control signals to the electronic control device.

27. The lamp defined in claim 12 which has at least two light sources of different colors individually addressable by said controller for producing a mixed color illumination.

28. The lamp defined in claim 27 wherein the data set written into the memory includes at least one characteristic of each of the at least two light sources.

29. The lamp defined in claim 26 wherein said component is connected with a plurality of said electronic control devices.

30. The lamp defined in claim 29 wherein said memory includes different data sets containing characteristics of different light sources.

31. The lamp defined in claim 30 wherein the component corrects or matches control signals received from the controller based upon the different data sets and the corrected control signals are transmitted to the plurality of electronic control devices.

32. A lamp having at least two light sources of different colors, especially at least one red at least one green and at least one blue light source, addressable with control signals supplied to the lamp through a signal line from a controller, the lamp having a memory containing a data set with information as to an exact color value of the individual light sources and/or containing information as to maximum light currents of the individual light sources, whereby a correction device is provided which corrects the control signals based upon the exact color values and/or the maximum light currents and operates the individual light sources with corrected control signals.

33. The lamp according to claim 32 characterized in that the correction device is associated with the lamp as a component thereof.

34. The lamp according to claim 33 wherein the correction device is a component of the electronic control element of the lamp.

35. The lamp defined in claim 32 wherein the correction device is a component of an electronic control device of at least one lamp.

36. The lamp defined in claim 32 wherein the correction device is located in the controller.

37. A lamp having at least two differently colored light sources and especially at least one red, at least one green and at least one blue light source individually addressable by control signals, the lamp having a memory in which a data set containing information as to an exact color value of each individual light source is maintained and/or containing information as to maximum light currents for the individual light sources, whereby a device for producing color mixed light patterns is provided in which specific exact color mixing is effected by controlled operation of the individual light sources taking into consideration the exact color values and/or maximum light currents.

38. The lamp defined in claim 37 wherein the lamp has a memory in which a mixed data set with information as to a plurality of colors to be mixed can be stored.

39. The lamp according to claim 38 which is provided with a device for adjusting the exact colors to be mixed based upon the mixed data set.

40. A device for controlling at least one lamp having at least two differently colored light sources, especially at least one red, at least one green and at least one blue light source, for generating a mixed color illumination from the lamp and wherein the light sources are individually addressable, said device responding to information as to exact color values and/or maximum light currents of the individual light sources for signalling a color space attainable by the lamp.

41. The device according to claim 40 wherein the device contains information as to a subcolor space which can represent a true partial quantity of the attainable color space.

42. The device according to claim 41 wherein the device indicates a subcolor space.

43. The device according to claim 42 wherein the subcolor space is projected on the attainable color space as a kind of template.

44. The device according to claim 43 wherein the device comprises a memory which encompasses a group of several subcolor spaces.

45. The device according to claim 44 wherein the device enables a selection of a subcolor space from the group.

46. A light source for a lamp which has a memory associated with it into which a data set can be registered.

47. The light source defined in claim 46 wherein the data set describes a characteristic of the light source.

48. The light source according to claim 47 wherein the data set contains information as to a maximum measured light current of the light source.

49. The light source defined in claim 48 wherein the data set includes information as to an exact measured light color and a wavelength and an exact spectrum as measured of the light source.

50. The light source defined in claim 49 wherein the data set includes information with respect to a temperature dependent property of the light source.

51. The light source defined in claim 50 wherein the data set includes information as to an aging property of the light source.

52. The light source according to claim 51 in which the data set is inscribed in the memory as a factory setting upon manufacture.

53. A light source according to claim 52 wherein the light source upon mounting in a lamp is directly or indirectly addressable by a controller via a signal line.

54. The light source according to claim 53 wherein the memory is readable by a component of the lamp and/or by the controller.

55. The light source according to claim 54 which is formed by an LED affixed to a circuit board, mounting plate or light fixture and the memory is provided on a circuit board, mounting plate or light fixture.

56. The light source according to claim 55 wherein a correcting unit is provided which corrects control signals received by the light source based upon the data set including an exact color value of the light source and/or a maximum light current thereof and controls the light source with the corrected control signals.

57. The light source according to claim 56 wherein after mounting of the light source in or on the lamp the data set is transmitted to another electronic component of the lamp.

58. A method of operating a lamp comprising the steps of:

(a) providing at least one light source in a lamp housing;

(b) at a time of manufacture storing in a memory assigned to the lamp at least one data set including information specific to the light source, said information comprising of at least one item selected from the group which consists of;

(i) an exact color value of the light source,

(ii) a maximum light current of the light source,

(iii) an aging-dependent property of the light source,

(iv) a temperature-dependent property of the light source,

(v) the wavelength of the light source, and

(vi) a spectrum of the light source;

(c) downloading said data set to a controller; and

(d) addressing said light source selectively through a control line connected to said lamp with signals corrected with reference to said data set downloaded from said memory.

59. The method defined in claim 58 wherein said memory and said controller are provided in a relationship to the lamp selected from:

i) said memory and said controller are both located in the lamp;

ii) said memory is lcoated into the lamp and said controller is located in a central control system connected to the lamp by said line; and

iii) said memory is a data carrier separable from said lamp and marketed therewith and said controller is located in a central control system connected to the lamp by said line or is in said lamp.

60. The method defined in claim 59, further comprising the step of measuring at least one item of said group for the light source of said lamp.