Lighting device

Patent metadata

Field	Value
Publication number	US-9423082-B2
Application number	US-201214130681-A
Country	US
Kind code	B2
Filing date	Jun 25, 2012
Priority date	Jul 4, 2011
Publication date	Aug 23, 2016
Grant date	Aug 23, 2016

Abstract

A lighting device may include: a carrier having a mounting surface, at least one luminescence diode chip having, at its side facing away from the carrier, a radiation exit surface, through which electromagnetic radiation generated in the luminescence diode chip during operation emerges at least partly, at least one optical body designed in a radiation-transmissive fashion, and a shaped body including a phosphor, wherein each luminescence diode chip is fixed to the mounting surface on the carrier, each optical body is fixed to the radiation exit surface of an assigned luminescence diode chip, the shaped body encloses each optical body in a positively locking manner at a side surface of the optical body, and the phosphor converts at least part of the electromagnetic radiation generated in at least one of the luminescence diode chips during operation.

First claim

The invention claimed is:

1. A lighting device comprising:
a carrier having a mounting surface,
at least one luminescence diode chip having, at its side facing away from the carrier, a radiation exit surface, through which electromagnetic radiation generated in the luminescence diode chip during operation emerges at least partly,
at least one optical body designed in a radiation-transmissive fashion, and
a shaped body comprising a phosphor, wherein
each luminescence diode chip is fixed to the mounting surface on the carrier,
each of said at least one optical body is fixed to the radiation exit surface of an assigned luminescence diode chip,
the shaped body encloses each optical body in a positively locking manner at a side surface of the optical body, and
the phosphor converts at least part of the electromagnetic radiation generated in at least one of the luminescence diode chips during operation, wherein at least one of the at least one optical body is free of the shaped body at its top surface facing away from the assigned luminescence diode chip.

2. The lighting device as claimed in claim 1 ,
wherein the shaped body encloses each luminescence diode chip in a positively locking manner at a side surface of the luminescence diode chip.

3. The lighting device as claimed in claim 1 ,
wherein an optical body of said at least one optical body is assigned one-to-one to each luminescence diode chip.

4. The lighting device as claimed in claim 1 ,
further comprising at least two optical bodies which differ from one another in terms of form and/or material composition.

5. The lighting device as claimed in claim 1 ,
wherein at least one of the at least one optical body is designed in a transparent fashion at least in places.

6. The lighting device as claimed in claim 1 ,
wherein at least one of the at least one optical body is designed in a radiation-scattering fashion at least in places.

7. The lighting device as claimed in claim 1 ,
wherein at least one of the at least one optical body is designed in a hemispherical, lens-shaped, pyramidal or prismatic fashion.

8. The lighting device as claimed in claim 1 ,
wherein at least one of the at least one optical body terminates flush with an outer surface of the shaped body at its top surface facing away from the assigned luminescence diode chip.

9. The lighting device as claimed in claim 1 ,
wherein at least one of the at least one optical body contains a further phosphor, which differs from the phosphor of the shaped body.

10. The lighting device as claimed in claim 1 ,
wherein each of the at least one optical body has exclusively planar boundary surfaces that terminate the optical body toward the outside.

11. The lighting device as claimed in claim 1 ,
further comprising a radiation-transmissive cover plate, which completely covers the shaped body at its side facing away from the carrier.

12. The lighting device as claimed in claim 1 ,
further comprising a reflective element, which completely covers the shaped body at its exposed outer surface.

13. The lighting device as claimed in claim 1 ,
wherein the at least one optical body has a higher optical refractive index than the surrounding material of the shaped body.

14. The lighting device as claimed in claim 1 ,
wherein a reflective enclosure encloses each luminescence diode chip in a positively locking manner at a side surface of the luminescence diode chip.

15. A lighting device comprising:
a carrier having a mounting surface,
at least one luminescence diode chip having, at its side facing away from the carrier, a radiation exit surface, through which electromagnetic radiation generated in the luminescence diode chip during operation emerges at least partly,
at least one optical body designed in a radiation-transmissive fashion, and
a shaped body comprising a phosphor, wherein
each luminescence diode chip is fixed to the mounting surface on the carrier,
each of said at least one optical body is fixed to the radiation exit surface of an assigned luminescence diode chip,
the shaped body encloses each optical body in a positively locking manner at a side surface of the optical body, and
the phosphor converts at least part of the electromagnetic radiation generated in at least one of the luminescence diode chips during operation,
wherein at least one of the at least one optical body contains a further phosphor, which differs from the phosphor of the shaped body.

16. A lighting device comprising:
a carrier having a mounting surface,
at least one luminescence diode chip having, at its side facing away from the carrier, a radiation exit surface, through which electromagnetic radiation generated in the luminescence diode chip during operation emerges at least partly,
at least one optical body designed in a radiation-transmissive fashion, and
a shaped body comprising a phosphor, wherein
each luminescence diode chip is fixed to the mounting surface on the carrier,
each of said at least one optical body is fixed to the radiation exit surface of an assigned luminescence diode chip,
the shaped body encloses each optical body in a positively locking manner at a side surface of the optical body, and
the phosphor converts at least part of the electromagnetic radiation generated in at least one of the luminescence diode chips during operation,
wherein the at least one optical body has a higher optical refractive index than the surrounding material of the shaped body.

17. The lighting device as claimed in claim 16 ,
wherein the shaped body encloses each luminescence diode chip in a positively locking manner at a side surface of the luminescence diode chip.

18. The lighting device as claimed in claim 16 ,
wherein an optical body of said at least one optical body is assigned one-to-one to each luminescence diode chip.

19. The lighting device as claimed in claim 16 ,
further comprising at least two optical bodies which differ from one another in terms of form and/or material composition.

20. The lighting device as claimed in claim 16 ,
wherein at least one of the at least one optical body is designed in a transparent fashion at least in places.

Assignees

• Biebersdorf Andreas
• Windisch Reiner
• Bergenek Krister
• Osram Gmbh

Inventors

• Biebersdorf Andreas
• Windisch Reiner
• Bergenek Krister

Classifications

• H10W90/00 Primary

  Package configurations · CPC title

• F21K9/64 Primary

  using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer · CPC title

• H10H20/8515

  not being in contact with the bodies · CPC title

• H10H20/855

  Optical field-shaping means, e.g. lenses · CPC title

• H01L25/0753

  Electricity · mapped topic