Illumination – With viewing mirror – Adjustable
Patent
1980-02-01
1982-06-29
Walsh, Donald D.
Illumination
With viewing mirror
Adjustable
362298, 362346, 362410, 362417, F21V 3300
Patent
active
043375065
ABSTRACT:
An adjustable floor or table lamp has a diffuser globe surrounding a light source for providing general diffuse light in a room, and an adjustable reflector above the diffuser for reflecting a portion of the light and thereby intensifying the light in a reading area. The diffuser may be open at its top for directing brighter light to the reflector and thus to the reading area. The reflector may be a two-sided mirror, with one side planar and the other non-planar, with the mirror mounted on a horizontal pivot axis over the diffuser and light source. In other embodiments an adjustable lamp includes multiple mirrors receiving light from a single source and reflecting it in concentrated beams in different directions. A small mirror may be positioned between a larger mirror and the light source, or the mirror closer to the source may be partially transmissive, or both mirrors may be together in a compound gimbaled apparatus, with the mirrors separately adjustable. In any event, the mirrors preferably are mounted for adjustment along two rotational axes so that any desired position can be attained.
REFERENCES:
patent: 976587 (1910-11-01), McNair
patent: 1506727 (1924-08-01), Rampp
patent: 1839146 (1931-12-01), Freer
patent: 2093457 (1937-09-01), Kuklin
patent: 2592962 (1952-04-01), Secrist
patent: 2744192 (1956-05-01), Rosenthal
patent: 3032642 (1962-05-01), Niederman
patent: 3368068 (1968-02-01), Cronheim
patent: 3541326 (1970-11-01), Durr
patent: 3711695 (1973-01-01), Orbach
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