Illumination – Curvilinear light source
Patent
1998-04-03
2000-12-12
Sember, Thomas M.
Illumination
Curvilinear light source
362311, 362135, F21V 3300
Patent
active
061588776
ABSTRACT:
A mirror device includes a frame comprising a circular ring-shaped light transmissive body which supports a concave magnifying mirror plate. The body has a front beveled annular light exit surface which angles inwardly and rearwardly from the outer side wall of the body to the inner side wall of the body, which has an annular shoulder flange which supports the peripheral edge of the mirror plate. The outer and inner side walls of the body curve longitudinally rearwardly and inwardly, terminating in an annular-shaped rear leg portion located behind the mirror plate. The rear leg portion has an inner, longitudinally disposed, cylindrical light entrance surface within which is located a ring-shaped lamp. Light rays entering the cylindrical light entrance surface are piped forward by total internal reflection within the support body to exit from the beveled front annular light exit surface, which is beveled at an angle which causes an annular cone of light to be focused near the focal point of the mirror plate, thereby effectively illuminating a face or other object placed close to the mirror.
REFERENCES:
patent: 1774331 (1930-08-01), Koller
patent: 1786420 (1930-12-01), Braly
patent: 3266016 (1966-08-01), Maryama et al.
patent: 5442488 (1995-08-01), Pastorino
Chapin William L.
Sember Thomas M.
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