LED module

• US 20050052378A1
• Filed: 07/29/2004
• Published: 03/10/2005
• 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
• Granted Patent: US 7,125,143 B2
• Time in Patent Office: Days
• US Class Current: 345/84
• 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

The invention relates to an LED module having a plurality of LEDs, comprising mixed-light LEDs (1) and additional LEDs (2), 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. LED module having a plurality of LEDs, comprising mixed-light LEDs (1) and additional LEDs (2),

characterized in that

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 (9).

2. LED module according to claim 1,

characterized in that

the mixed-light LEDs (1) have an LED chip (4) and a conversion element (5), which converts the radiation emitted by the LED chip (4) into radiation of a different wavelength.

3. LED module according to claim 2,

characterized in that

the conversion element (5) surrounds the LED chip.

4. LED module according to claim 2,

characterized in that

the conversion element (5) contains at least one luminous substance that is distributed in a casting mass.

5. LED module according to claim 1,

characterized in that

the LED chips (6, 7, 8) of the additional LEDs (2) can be controlled separately.

6. LED module according to claim 1,

characterized in that

the mixed-light LEDs (1) are white-light LEDs.

7. LED module according to claim 6,

characterized in that

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 (2).

8. LED module according to claim 6 or 7,

characterized in that

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 (2).

9. LED module according to claim 1,

characterized in that

at least one LED chip of the additional LEDs (2) emits in the red spectral range.

10. LED module according to claim 1,

characterized in that

at least one LED chip (6) of the additional LEDs (2) emits in the orange or yellow spectral range.

11. LED module according to claim 1,

characterized in that

at least one LED chip (7) of the additional LEDs (2) emits in the green or blue-green spectral range.

12. LED module according to claim 1,

characterized in that

at least one LED chip (8) of the additional LEDs (2) emits in the blue spectral range.

13. LED module according to claim 1,

characterized in that

the LED module emits light having a predetermined spectrum, wherein the additional LEDs (2) supplement the spectral components missing in the spectrum of the mixed-light LEDs (1).

14. LED module according to claim 1,

characterized in that the predetermined spectrum corresponds to the spectrum of a Planck radiator at a predetermined temperature.