US 7,568,816 B2Granted

LED inspection lamp and LED spot light

AssigneesR.J. Doran & Co Ltd., Brasscorp Limited

InventorsJack Brass, Richard J. Doran, Donald L. Klipstein, Thomas M. Lemons, Bjarki Hallgrimson, Sarah Dobbin

Life of this patent

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Abstract

An LED inspection lamp has plurality of LED sources for emitting electromagnetic radiation at different peak wavelengths for causing visible fluorescence in different leak detection dyes. A lens is associated with each LED. Radiation passing through lenses is superimposed in target area at target distance. Another LED inspection lamp has plurality of LEDs emitting electromagnetic radiation at a peak wavelength. A lens adaptor has lens housing for attachment to LED inspection lamp with a single LED for causing visible fluorescence, and a lens. Substantially all of the radiation from the LED passes through the lens and is focused in a target area at a target distance from the lenses. LED spot lights have a similar configuration. The LEDs may produce white light from distinct LEDs or from white LEDs. The light may be a flashlight or fixed spot light.

Claims21

Dependent claims

A spot light, comprising:

a plurality of tight emitting diodes which produce electromagnetic radiation,
a plurality of lenses, and
a head section having an opening at one end,
wherein the plurality of light emitting diodes are within the head section,
wherein the plurality of lenses are within the head section,
wherein each of said lenses forms a beam of said electromagnetic radiation, with each of said lenses being associated with one of said light emitting diodes in a manner that results in said beams being substantially superimposed with each other at a target distance from the lenses outside the head section, and
wherein the optical centers of one or more of the light emitting diodes are offset outwardly, in a direction away from a center of said head, from the optical centers of their associated lenses, to cause the radiation passing through the lenses to be substantially superimposed to a target area at the target distance.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 11/695,894Filed 3 Apr 2007 · continuation
Priority: 31 Dec 2001
Published: US 2007/0247844 A125 Oct 2007
Granted: 4 Aug 2009
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

G01N 21/6428
Fluorescence; Phosphorescence: measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g.…
G01N 21/31
Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands:…
G01N 21/6402
Fluorescence; Phosphorescence: atomic fluorescence; Laser induced fluorescence
G01N 21/6447
Fluorescence; Phosphorescence: by visual observation

Family

Application10/029,803Parent of this continuation-in-part · filed 31 Dec 2001
Application60/359,656Us provisional application · filed 27 Feb 2002
PCT/CA02/02020Parent of this continuation · filed 30 Dec 2002
US 2007/0247844 A1Pre-grant publication · published 25 Oct 2007
Application10/500,500Parent of this continuation
US 7,204,606 B2Parent of this continuation
US 6,979,104 B2Parent of this continuation-in-part
Application10/500,500Parent of this continuation-in-part
US 2003/0123254 A1Published application
US 2005/0083687 A1Published application
US 7,568,816 B2This patent

From the US filing history. Foreign family members aren’t listed.