Semiconductor radiation source and light curing device

Patent 7595513 Issued on September 29, 2009. Estimated Expiration Date:

March 23, 2027. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

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Inventors

Assignee

Ivoctar Vivadent AG

Application

No. 11728252 filed on 03/23/2007

US Classes:

257/98With reflector, opaque mask, or optical element (e.g., lens, optical fiber, index of refraction matching layer, luminescent material layer, filter) integral with device or device enclosure or package

Examiners

Primary: Lee, Calvin

Attorney, Agent or Firm

Foreign Patent References

89 07 530 DE 09/01/1989
100 37 420 DE 01/01/2002
10 2005 028 176 DE 02/01/2006
0 509 389 EP 10/01/1992
0 802 572 EP 10/01/1997
0 879 582 EP 11/01/1998
2 197 126 GB 05/01/1988
WO 2005/067063 WO 07/01/2005

International Class

H01L 33/00

Abstract

Provision is made of a semiconductor radiation source having a base body on which at least two LED chips are mounted, at least one chip of which is connected to a series resistor which can be adjusted. The LED chips (12, 14) are fitted to the base body (24) using a thermally conductive connection and at least one printed circuit board (30) which bears the series resistor (40, 42) is also mounted on the base body (24).