System for frontal illumination
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United States of America Patent
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Nov 22, 1994
Grant Date -
N/A
app pub date -
Dec 24, 1992
filing date -
Dec 24, 1992
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A frontal illumination system includes a light source and a finite plurality of reflecting surfaces. The reflecting surfaces can be characterized as the inner surfaces of a set of conical frustums arranged to approximate the illumination coming from the inner surface of a hemisphere. The light source is located within or adjacent to at least one of the reflecting surfaces. It emits light that is reflected off opposing portions of at least one, and preferably all, of the surfaces. The system is capable of illuminating the object from a very large solid angle, even though it is disposed in a substantially short axial space.
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Cited Art Landscape
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