Dichroic Color Changers
Introduced as an alternative to a color scroller, High End System's Colormerge unit was an add-on dichroic color changer. It was a color mixing unit made to be used with the ETC Source Four ellipsoidal fixture. Unlike a traditional color scroller, it was installed inside the unit between the reflector assembly and shutters. It provided CMY color mixing via dichroic glass plates. "Colormerge" was a relatively expensive device which lacked reliability - these problem ultimately caused it to fail in the marketplace. It was discontinued in 2004.
More recently, the SeaChanger line by Ocean Thin Films accomplishes much the same thing but features a wide range of patented dichroic color wheels in an array of saturation levels, for added color possibilities. The SeaChanger unit is also much larger than the Colormerge and completely replaces the shutter assembly of a Source Four fixture. The SeaChanger has achieved a much higher level of commercial success.
In 2009, Morpheus Lights introduced the PacificFader line of dichroic color changers, which were specifically developed for use with the modular Selecon Pacific ellipsoidal fixtures manufactured by Philips Entertainment. PacificFader units are available with either 3, 4, or 5 control parameters: PacificFader3 provides C,Y,M color mixing for use with tungsten fixtures. PacificFader4 adds a smooth optical dimmer/douser to the C,Y,M control, for use with energy efficient arc sources (CDM, MSR, MSD). The top-of-the-line PacificFader5 adds Morpheus' extended range CTO filter, which can either be used to color-correct daylight sources to match tungsten units or to "bend" the CYM color mix for additional subtle color control.
Read more about this topic: Color Scroller
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