Solid state light source

• US 6,957,905 B1
• Filed: 10/03/2002
• Issued: 10/25/2005
• Est. Priority Date: 10/03/2001
• Status: Expired due to Fees

• Current Assignee: LED Pipe, Inc.
• Original Assignee: LED Pipe, Inc.
• Inventors: Magiske, William J., Pritchard, Donald V.
• Primary Examiner(s): Alavi, Ali
• Application Number:
  US10/263,922
• Time in Patent Office: 1,118 Days
• Field of Search: 362/202, 362/204, 362/231, 362/184, 362/267, 362/158, 362554-556, 362/578, 315/194, 315/185.R
• US Class Current: 362/554
• CPC Class Codes: B62J 6/029 characterised by the structure, e.g. casings
• CPC Class Codes: F21L 4/027 the light sources being a LED
• CPC Class Codes: F21V 21/06 Bases for movable standing lamps; Fixing standards to the bases F21V21/08 takes precedence
• CPC Class Codes: F21V 21/0885 for portable lighting devices
• CPC Class Codes: F21V 2200/17 characterised by the admission of light into the guide
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A light source includes a housing, an LED array of individual LED elements mounted in the housing, and a controller mounted in the housing and coupled to the LED array. The controller sequentially, intermittently pulses the LED elements of the LED array. The controller over drives the LED elements of the LED array with a current in excess of several times the continuous forward rating for the individual LED elements. The housing is a substantially closed, waterproof, tubular member and may include a power source in the housing. The light source may form a portable light source. The light source may include a fiber optic bundle coupling in the housing and a fresnel lens between the LED array and the fiber optic bundle coupling.

Claims

1. An illumination light source comprising:

a housing formed of a tube with a pair end caps removably attached at opposed ends of the tube;

an LED light member having at least one individual LED element mounted in the housing, wherein each individual LED element is at least 1-candela;

a replaceable fiber optic bundle coupling removably mounted directly onto one end cap of the housing with the fiber optic bundle coupling adapted to removably receive the end of a fiber optic bundle therein, wherein the replaceable fiber optic bundle coupling is separate from the end cap; and

a mechanism within the housing between the LED light member and the fiber optic bundle coupling for concentrating light from the LED light member onto the fiber optic bundle coupling.

4. The light source as claimed in claim 1 wherein the housing is a substantially closed, waterproof, tubular member with the end caps threaded to an aluminum tube, and the fiber optic bundle coupling threaded onto one end cap.

5. The light source as claimed in claim 1 further including a power source in the housing.

6. The light source as claimed in claim 5 wherein the power source includes at least one battery and the housing is a substantially closed, waterproof, aluminum tubular member with threaded end caps forming a portable light source, and wherein the fiber optic bundle coupling is threaded onto one end cap.

7. The light source as claimed in claim 1 wherein the housing is a substantially closed anodized aluminum tubular member with threaded end caps, and wherein the fiber optic bundle coupling is threaded onto one end cap.

8. The light source as claimed in claim 7 wherein the mechanism for concentrating light from the LED light member includes a fresnel lens in the housing between the LED light member and the fiber optic bundle coupling.

9. The light source as claimed in claim 8 wherein the mechanism for concentrating light from the LED light member further includes a collector mirror between the lens and the fiber optic bundle coupling.

10. The light source as claimed in claim 9 wherein the housing is a substantially closed, waterproof, anodized aluminum tubular member having a power source coupling threaded onto one end thereof.

11. The light source as claimed in claim 9 further including an adjustment mechanism in the housing for adjusting the intensity of the LED light member.

12. The light source as claimed in claim 1 wherein the LED light member includes a plurality of colors of LED elements.

13. The light source as claimed in claim 1 wherein the LED light member is divided into channels of LED element pairs operated simultaneously.

14. The light source as claimed in claim 1 wherein the LED light member is formed as an array that uses one of 5 mm LED elements and chip style surface mount elements.

15. The light source as claimed in claim 1 further including a controller intermittently pulsing the LED elements of the LED light member, and wherein the controller accepts a variety of input voltages and accepts external strobe signals.

2. A light source comprising:

a housing;

an LED light member mounted in the housing, wherein the LED light member is an array of individual LED elements;

a fiber optic bundle coupling mounted in the housing; and

a controller intermittently pulsing the LED elements of the LED array, and wherein the controller sequentially pulses the LED elements and over drives the LED elements of the LED array with a current in excess of the continuous forward rating for the individual LED elements.

3. The light source as claimed in claim 2 wherein controller over drives the LED elements of the LED array with a current in excess of three times the continuous forward rating for the individual LED elements.

16. An illuminating fiber optic light source comprising:

a light-weight housing formed of an aluminum tube with a pair of threaded end caps removably attached to opposed ends of the tube;

an LED light member including at least one LED element mounted in the tube of the housing, wherein each LED element is at least 1 candela;

a lens mounted in the housing adjacent the LED light member; and

a replaceable fiber optic bundle coupling threaded directly in one end cap of the housing, wherein the fiber optic bundle coupling is configured to removably receive the end of a fiber optic bundle therein, wherein the replaceable fiber optic bundle coupling is separate from the end cap; and

a mechanism within the housing between the LED light member and the fiber optic bundle coupling for concentrating light from the LED light member onto the fiber optic bundle coupling.

17. The light source as claimed in claim 16 wherein the mechanism for concentrating light from the LED light member includes a collector mirror between the lens and the fiber optic bundle coupling.

18. The light source as claimed in claim 16 wherein the housing is a substantially closed, waterproof, tubular member having a power source coupling.

19. The light source as claimed in claim 16 further including an adjustment mechanism in the housing for adjusting the intensity of the LED light member.

20. The light source as claimed in claim 16 wherein the LED light member is divided into channels of LED element pairs operated simultaneously.

21. A portable LED light source comprising:

a ridged, substantially closed housing formed of an aluminum tube with opposed threaded end caps;

a LED light member formed of at least one individual LED element mounted in the housing; and

a power source coupled to the LED light member;

a replaceable fiber optic bundle coupling threaded directly in one end cap of the housing, wherein the fiber optic bundle coupling is configured to removably receive the end of a fiber optic bundle therein, wherein the replaceable fiber optic bundle coupling is separate from the end cap;

a mechanism within the housing between the LED light member and the fiber optic bundle coupling for concentrating light from the LED light member onto the fiber optic bundle coupling and

a controller mounted in the housing and coupled to the LED light member, wherein the controller evaluates the power source and controls the LED light member providing a light source output that is substantially constant over a range of input voltages from the power source, and wherein the controller over drives the LED elements of the LED light member with a current in excess of the continuous forward rating for the individual LED elements.

22. The light source as claimed in claim 21 wherein the LED light member uses 5 mm LED elements and wherein the controller accepts external strobe signals.

23. The light source as claimed in claim 21 wherein the controller sequentially, intermittently pulses the LED elements of the LED light member.

24. The light source as claimed in claim 21 wherein the light source is a machine vision light source and the housing is a substantially waterproof member.

25. The light source as claimed in claim 21 wherein the power source is in the housing.

26. The light source as claimed in claim 25 wherein the power source includes at least one battery and the housing is a substantially closed, waterproof, tubular member forming a portable light source.

27. The light source as claimed in claim 21 wherein the mechanism for concentrating light from the LED light member includes a fresnel lens in the housing between the LED light member and the fiber optic bundle coupling.

28. The light source as claimed in claim 27 wherein the mechanism for concentrating light from the LED light member further includes a collector mirror between the lens and the fiber optic bundle coupling.

29. The light source as claimed in claim 28 further including an adjustment mechanism in the housing for adjusting the intensity of the LED light member.

30. The light source as claimed in claim 21 wherein the LED light member includes a plurality of colors of LED elements.

31. The light source as claimed in claim 21 wherein the LED light member is divided into channels of LED element pairs operated simultaneously.