Portable lighting device with light-emitting diode

Details Portable lighting device with light-emitting diode Portable lighting device with light-emitting diode

2007-03-20

2007-03-20

Husar, Stephen F (Department: 2875)

Illumination

Light modifier

Adjustable or positionable

C362S157000, C362S231000, C362S282000, C362S187000

Reexamination Certificate

active

10532812

ABSTRACT:
A portable lighting lamp comprises an emitting module equipped with at least one light-emitting diode for emitting a light beam, a fixing and connecting element of said diode, and an optical focusing device able to be moved in front of the diode to make the visualization angle of the light beam vary. The optical focusing device is advantageously constituted by one or more Fresnel lenses mounted on a swiveling support or a rotary knob designed to occupy either an inactive position situated outside the light emission field of the diode or an active position wherein said light beam passes through the lens so as to obtain either broad lighting with a short range or narrow lighting with a long range.

REFERENCES:
patent: 3705983 (1972-12-01), Yamada
patent: 6474837 (2002-11-01), Belliveau
patent: 283 441 (1915-04-01), None
patent: U1 85 15 726.0 (1985-08-01), None
patent: 0 111 818 (1984-06-01), None
patent: 2 745 627 (1997-09-01), None
patent: 2 264 164 (1993-08-01), None
patent: WO 01/57431 (2001-08-01), None

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