Dual head inspection lamp

• US 20090295310A1
• Filed: 05/26/2009
• Published: 12/03/2009
• Est. Priority Date: 05/28/2008
• Status: Abandoned Application

• Current Assignee: Spectronics Corporation
• Original Assignee: Spectronics Corporation
• Inventors: Duerr, John, Garcia, Gustavo
• Application Number:
  US12/455,009
• Publication Number:
  US 20090295310A1
• Time in Patent Office: Days
• US Class Current: 315/297
• CPC Class Codes: F21L 4/025 the light sources being of different shape or type
• CPC Class Codes: F21L 4/027 the light sources being a LED
• CPC Class Codes: F21V 23/0414 specially adapted to be used with portable lighting devices
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: G01N 21/6447 by visual observation

Abstract

A dual head lamp having a housing, a first head removably attached to the first end of the housing, and a second head removably attached to the second end of the housing. The first head includes at least one non-white light emitting diode configured to emit light with a wavelength of between 250 nm and 500 nm for fluorescent inspection. The second head includes at least one light emitting diode the emits light having a wavelength that is different than the wavelength of the light emitted from the non-white light emitting diode in the first head. The second head is preferably arranged to emit light in a direction opposite the direction of the non-white light emitting diode. A removable battery compartment is within the housing and configured to hold one or more batteries. A button in communication with a circuit allows for control of power to the light emitting diodes.

Claims

1. A lamp comprising:

a housing having a first end and a second end;

a first head removably attached to the first end, the first head including at least one primary non-white light emitting diode configured to emit light having a wavelength between about 250 nm to about 500 nm through a window of the first head in a first direction substantially parallel to the length of the housing;

a second head removably attached to the second end, the second head including at least one secondary light emitting diode configured to emit light having a wavelength that is different than the wavelength of light emitted by the primary light emitting diode in the first head, the light from the secondary light emitting diode being emitted through a window in the second head in a direction that is not the same as the first direction;

a removable battery compartment located within the housing and in communication with a circuit within the housing, the battery compartment configured to hold one or more batteries; and

a single button in communication with the circuit;

wherein the button and the circuit control power to the primary non-white light emitting diode and the secondary light emitting diode.

2. A lamp of claim 1, wherein the at least one secondary light emitting diode includes at least one white light emitting diode.

3. A lamp of claim 1, wherein the housing has a longitudinal axis and wherein the second head emits light in a direction substantially parallel to the axis of the housing and in a direction opposite to the direction of the light emitted by the primary non-white light emitting diode.

4. A lamp of claim 1, wherein the housing is substantially cylindrical.

5. A lamp of claim 3, wherein the housing is tapered outwardly at the first end, the second end, or both the first end and the second end.

6. A lamp of claim 1, wherein the one or more batteries are reusable batteries.

7. A lamp of claim 1, wherein the circuit limits the current so that no more than about 4.6 volts of power are delivered to the primary and secondary light emitting diodes.

8. A lamp of claim 1, wherein the button is configured as a switch for the circuit where the one or more batteries provide power to the at least one primary light emitting diode in a first stage of the circuit, the one or more batteries provide power to the at least one secondary emitting diode in a second stage of the circuit, and the one or more batteries provide power to neither the at least one primary non-white light emitting diode nor the at least one secondary light emitting diode in a third stage of the circuit.

9. A lamp of claim 8, wherein the circuit further comprises a fourth stage where the one or more batteries provide power to both the at least primary light emitting diode and the at least one secondary light emitting diode.

10. A lamp of claim 1, wherein light emitted from the primary non-white light emitting diode has a wavelength from about 400 nm to about 480 nm.

11. A lamp of claim 1, wherein light emitted from the primary non-white light emitting diode has a wavelength from about 250 nm to about 400 nm.

12. A lamp of claim 11, wherein light emitted from the primary non-white light emitting diode has a wavelength from about 280 nm to about 320 nm.

13. A lamp of claim 11, wherein light emitted from the primary non-white light emitting diode has a wavelength from about 320 nm to about 400 nm.

14. A lamp of claim 1, wherein the circuit retards voltage to the light emitting diode being powered when voltage from the one or more batteries exceeds a first threshold.

15. A lamp of claim 14, wherein the circuit boosts voltage to the to the light emitting diodes being powered when voltage from the one or more batteries drops below a second threshold, and blocks voltage to the light emitting diodes when voltage from the one or more batteries drops below a third threshold.

16. A lamp of claim 1, wherein the circuit comprises a buck boost control circuit with a cascade connection of a step down converter and a step up converter.

17. A lamp of claim 15, further comprising an indicator light that is lit when the voltage drops below the third threshold.

18. A lamp of claim 1, wherein the at least one primary light emitting diode emits light having a wavelength within the UV spectrum, and the secondary light emitting diode emits light having a wavelength within the blue spectrum.