Method for producing and/or controlling chromatic luminous beams applicable on light projectors and/or observing and measuring instruments or the like
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United States of America Patent
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Oct 20, 1998
Grant Date -
N/A
app pub date -
Feb 2, 1996
filing date -
Feb 7, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for producing a luminous beam uses a chromatic element which can be shifted with respect to the beam axis. The chromatic element is arranged in a precise point inside the optical equipment for which the element is designed. The chromatic element or filter is arranged in an optical zone called the 'pupil' and consists of plurality of circular sectors which are equal to each other, for instance each sector may occupy 120 degrees. The sectors each have different colors. The so-obtained filter is thus positioned in the pupil zone in such a way that the filter may be shifted orthogonally to the optical axis in order to choose and/or use or select an infinite range of colors or chromatic or luminous intensities.
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