Apparatus for the uniform illumination of a surface
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United States of America Patent
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-
May 17, 1994
Grant Date -
N/A
app pub date -
Nov 25, 1992
filing date -
Nov 25, 1992
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An apparatus for providing uniform illumination to a surface includes a chamber defined by a wall, the wall having an opaque wall portion and a partially transparent wall portion. A light source such as a flash lamp, is mounted in the chamber. The interior surface of the chamber wall is light-reflective. The partially transparent wall portion has transparent apertures which permit light to exit the light chamber. The partially transparent wall portion has a first section with a first average transparency and a second section with a second average transparency. In operation, the apparatus completely covers a target surface while light generated by the light source either directly exits the light chamber through the transparent apertures or is reflected off the reflective interior surfaces of the light chamber before exiting the light chamber through the transparent apertures, uniformly illuminating the target surface.
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