LED module

• US 7,125,143 B2
• Filed: 07/29/2004
• Issued: 10/24/2006
• Est. Priority Date: 07/31/2003
• Status: Active Grant

• Current Assignee: Optotronic GmbH (Inventronics (Hangzhou), Inc.)
• Original Assignee: Osram Opto Semiconductors GmbH (Ams-Osram AG)
• Inventors: Hacker, Christian
• Primary Examiner(s): Luebke, Renee
• Assistant Examiner(s): Shallenberger, Julie A.
• Application Number:
  US10/901,770
• Publication Number:
  US 20050052378A1
• Time in Patent Office: 817 Days
• Field of Search: 362/231, 362/251
• US Class Current: 362/231
• CPC Class Codes: F21K 9/00 Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
• CPC Class Codes: F21Y 2113/17 forming a single encapsulated light source
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A LED module having a plurality of LEDs, comprising mixed-light LEDs and additional LEDs, wherein each of the additional LEDs (2) has a plurality of LED chips (6, 7, 8) having different emission wavelengths, which, in each instance, are arranged in a common housing.

Claims

1. A LED module comprising:

a plurality of mixed-light LEDs, each mixed-light LED includes a corresponding LED chip and a conversion element configured to convert at least a portion of the radiation emitted by the corresponding LED chip into radiation of a different wavelength; and

a plurality of additional LEDs,

each of the additional LEDs includes a plurality of LED chips arranged in a common housing, each of the plurality of LED chips having different emission wavelengths.

2. LED module according to claim 1,

wherein the conversion element surrounds the LED chip.

3. LED module according to claim 1,

wherein the conversion element contains at least one luminous substance that is distributed in a casting mass.

4. LED module according to claim 1,

wherein the LED chips of the additional LEDs can be controlled separately.

5. LED module according to claim 1,

wherein the mixed-light LEDs are white-light LEDs.

6. LED module according to claim 5,

wherein the LED module emits light of a predetermined color temperature and that the color temperature is adjustable by means of a control device of the additional LEDs.

7. LED module according to claim 5,

wherein the LED module emits light of a predetermined color reproduction value and that the color temperature is adjustable by means of a control device of the additional LEDs.

8. LED module according to claim 1,

wherein at least one LED chip of the additional LEDs emits in the red spectral range.

9. LED module according to claim 1,

wherein at least one LED chip of the additional LEDs emits in the orange or yellow spectral range.

10. LED module according to claim 1,

wherein at least one LED chip of the additional LEDs emits in the green or blue-green spectral range.

11. LED module according to claim 1,

wherein at least one LED chip of the additional LEDs emits in the blue spectral range.

12. LED module according to claim 1,

wherein the LED module emits light having a predetermined spectrum, wherein the additional LEDs supplement the spectral components missing in the spectrum of the mixed-light LEDs.

13. LED module according to claim 1,

wherein the predetermined spectrum corresponds to the spectrum of a Planck radiator at a predetermined temperature.