Focus-adjustable LED flashlight

Details Focus-adjustable LED flashlight Focus-adjustable LED flashlight

2006-12-06

2008-12-09

Sawhney, Hargobind S (Department: 2885)

Illumination

Self powered lamp

With movable focusing element

C362S174000

Reexamination Certificate

active

07461945

ABSTRACT:
A focus-adjustable LED flashlight includes: a tubular housing; an LED light-emitting unit coupled to the tubular housing; a sleeve unit coupled movably to the tubular housing; and a positive lens mounted in the sleeve unit and spaced apart from and aligned with the LED light-emitting unit along an axis of the tubular housing. The sleeve unit is movable relative to the tubular housing and the LED light-emitting unit along the axis of the tubular housing so as to adjust a distance between the positive lens and the LED light-emitting unit.

REFERENCES:
patent: 1478282 (1923-12-01), Hunter
patent: 7083299 (2006-08-01), Chapman
patent: 7147343 (2006-12-01), Chapman
patent: 2005/0099805 (2005-05-01), Chapman
patent: 2005/0254233 (2005-11-01), Alessio

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