Led lighting device

• US 20060087842A1
• Filed: 06/20/2003
• Published: 04/27/2006
• Est. Priority Date: 06/20/2002
• Status: Active Grant

• Current Assignee: Energizer Brands, LLC (Energizer Holdings, Inc.)
• Original Assignee: Eveready Battery Company Incorporated (Energizer Holdings, Inc.)
• Inventors: Alessio, David J.
• Granted Patent: US 7,461,944 B2
• Time in Patent Office: Days
• US Class Current: 362/235
• CPC Class Codes: F21L 14/00 Electric lighting devices without a self-contained power source, e.g. for mains connection
• CPC Class Codes: F21L 4/027 the light sources being a LED
• CPC Class Codes: F21V 14/065 in portable lighting devices
• CPC Class Codes: F21V 21/084 Head fittings
• CPC Class Codes: F21V 5/006 applied to portable lighting devices
• CPC Class Codes: F21V 5/04 of lens shape
• CPC Class Codes: F21Y 2101/00 Point-like light sources
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: Y10S 362/80 Light emitting diode

Abstract

A lighting device (10) is provided which uses multiple LEDs to illuminate a target area. The lighting device includes first and second light emitting diodes (24, 26) spaced apart from each other. A first convex magnifier lens (34) is arranged in a light path of the first light emitting diode (24) for focusing light onto a target area. A second convex magnifier lens (36) is arranged in a light path of the second light emitting diode (26) for focusing light onto the same target area. The first and second magnifier lenses (34, 36) are supported relative to the first and second light emitting diodes (24, 26) , respectively, by a cover (32).

Claims

1. A lighting device comprising:

a housing;

a first light emitting diode located on the housing;

a second light emitting diode located on the housing and spaced from the first light emitting diode;

a first magnifier lens arranged in a light path of the first light emitting diode for focusing a first light beam onto a target area;

a second magnifier lens arranged in a light path of the second light emitting diode for focusing a second light beam onto the target area; and

a support member for supporting the first and second magnifier lenses relative to the first and second light emitting diodes, respectively.

2. The lighting device as defined in claim 1, wherein the support member comprises a non-reflective inner wall.

3. The lighting device as defined in claim 1, wherein the support member comprises a cover of the housing.

4. The lighting device as defined in claim 3, wherein the cover comprises a substantially transparent material.

5. The lighting device as defined in claim 1, wherein the first and second magnifier lenses each comprise a convex magnifier lens.

6. The lighting device as defined in claim 1, wherein the first and second magnifier lenses each comprise a piano convex magnifier lens.

7. The lighting device as defined in claim 1, wherein the first and second magnifier lenses are arranged substantially orthogonal to the light path of the corresponding first and second light emitting diodes.

8. The lighting device as defined in claim 1, wherein the device is employed on a flashlight.

9. The lighting device as defined in claim 1 further comprising a circuit board fixed to the housing, wherein the first and second light emitting diodes are connected to the circuit board.

10. A lighting device comprising:

a housing;

a first light emitting diode located on the housing;

a second light emitting diode located on the housing and spaced from the first light emitting diode;

a first magnifier lens comprising a convex surface and arranged in a light path of the first light emitting diode for focusing a first light beam onto a target area;

a second magnifier lens comprising a convex surface and arranged in a light path of the second light emitting diode for focusing a second light beam onto the target area, wherein the second magnifier lens is spaced from the first magnifier lens; and

a cover disposed over a front of the housing, said cover supporting the first and second magnifier lenses relative to the first and second light emitting diodes, respectively.

11. The lighting device as defined in claim 10, wherein the cover comprises a substantially transparent material.

12. The lighting device as defined in claim 10, wherein the cover comprises a non-reflective inner wall.

13. The lighting device as defined in claim 10, wherein the first and second magnifier lenses each comprise a convex magnifier lens.

14. The lighting device as defined in claim 10, wherein the first and second magnifier lenses each comprise a plano convex magnifier lens.

15. The lighting device as defined in claim 10, wherein the first and second magnifier lenses are arranged substantially orthogonal to the light path of the corresponding first and second light emitting diodes.

16. The lighting device as defined in claim 10, wherein the device is employed on a flashlight.