Method for producing and/or controlling chromatic luminous beams

Details Method for producing and/or controlling chromatic luminous beams Method for producing and/or controlling chromatic luminous beams

1996-02-02

1998-10-20

Henry, Jon W.

Optical: systems and elements

Absorption filter

Movable in or out of optical path

359891, 355 32, G02B 522, G03B 732

Patent

active

058255664

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.

REFERENCES:
patent: 4758075 (1988-07-01), Hatano
patent: 5283697 (1994-02-01), Tutt et al.
patent: 5345340 (1994-09-01), Goedert
patent: 5633737 (1997-05-01), Tanaka et al.
patent: 5640226 (1997-06-01), Zoggia

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