Illumination – Light source and modifier – Laser type
Patent
1998-03-06
2000-11-07
O'Shea, Sandra
Illumination
Light source and modifier
Laser type
362542, F21K 2700
Patent
active
061426490
ABSTRACT:
An emergency lighting fixture, particularly suited for industrial environments, includes a central body, at least one source of light constituted by an incandescent halogen lamp held inside a parabolic reflector and a transparent shell covering the fixture's central body. The reflector is adjustable by an operator from outside the emergency lighting fixture, after lifting the transparent shell, so as to regulate the direction of the light beam. Each reflector is further associated with a laser light source, capable of providing an emergency lighting system, for instance in the presence of smoke in the surrounding environment as detected by a smoke sensor. A regulating device of the laser light beam includes a ring nut swiveling in a horizontal plane and a plate for vertical adjustments, so as to make it possible to position the laser beam within pre-established angles.
REFERENCES:
patent: 3710098 (1973-01-01), Walden
patent: 4353110 (1982-10-01), Ellis
patent: 4617561 (1986-10-01), Brown
patent: 5565839 (1996-10-01), Poss
patent: 5629105 (1997-05-01), Matthews
patent: 5871272 (1999-02-01), Sharrah
Beghelli S.p.A.
O'shea Sandra
Sawhney Hargobind S.
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