Illumination – Light source and modifier – Including reflector
Patent
1989-04-14
1990-07-17
Lazarus, Ira S.
Illumination
Light source and modifier
Including reflector
362347, 362348, 362804, F21V 709
Patent
active
049425072
ABSTRACT:
A reflector for dental and surgical operating room light fixtures exhibits, in a first cutting plane, an elliptic contour. A parabolic contour is exhibited in a second cutting plane vertical to this first cutting plane. The center of the lamp filament is in the common focal point of the ellipse and parabola. A fine light-diffusing structure overlies the light-reflecting surface to improve the uniformity of the light field.
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Holmes, J. G., "Para-Ellipsoid Mirrors and Fan shaped Beams," Lighting Research & Technology, vol. 11, No. 2, pp. 95-98 (1979).
AUER-SOG Glaswerke GmbH
Cole Richard R.
Lazarus Ira S.
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