Illumination – Light modifier – Reflector
Patent
1996-10-10
1998-09-01
Lazarus, Ira S.
Illumination
Light modifier
Reflector
362347, 362226, 362247, 362440, F21V 700
Patent
active
058000518
ABSTRACT:
A medical lamp having a reflector in the shape of an ellipsoid of rotation containing on its interior side a plurality of facets which provide for a largely shadow-free illumination of the area to be lit. An opening is provided in the reflector, which is surrounded by a ring flange. A lamp having a spiral-wound filament therein is inserted into the ring flange so that its bulb is oriented towards the surface of the reflector where the light exits, whereby the spiral-wound filament in the bulb is positioned along the reflector axis. The bulb has a base with a cylindrical portion which is adjacent to a plate flange. The cylindrical portion of the base is encircled by the ring flange of the reflector opening in such a manner that the bulb is secured against shifting in the radial direction of the reflector axis. A clip attached to opposite ends of the reflector contacts the plate flange located at the rear end of the lamp in a locking manner to secure the base to the outer edge of the ring flange and, as a result, the lamp is set in its correct spiral-wound filament position. A major advantage of the present invention is its simple construction and the speed with which the lamp can be changed.
REFERENCES:
patent: 1333182 (1920-03-01), Minor et al.
patent: 3511983 (1970-05-01), Dorman
patent: 5072348 (1991-12-01), Tsukada
patent: 5121309 (1992-06-01), Ewing et al.
patent: 5186535 (1993-02-01), Yokoyama
patent: 5513082 (1996-04-01), Asano
patent: 5544030 (1996-08-01), Wijibenga
Gampe Uwe
Greif Stefan
Hartge Jorg Eduard
Marka Rudolf
Heraeus Med GmbH
Lam Nhat-Hang H.
Lazarus Ira S.
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