MULTI-BANDPASS FILTER FOR PROJECTION ARRANGEMENTS
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United States of America Patent
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Issued Date -
Feb 8, 2007
app pub date -
Jun 6, 2006
filing date -
Jun 7, 2005
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An optical filter for manipulating the spectrum of a light source is comprised of a transparent substrate and a first layer system applied to only one side, preferably an interference layer system. The substrate and the first layer system form a combined UV and IR filter (UV-IR filter) such that radiation portions both below a wavelength of 420 nm, particularly in the UV range, and above a wavelength of 690 nm, particularly in the IR range, are not fully transmitted via the first layer system.
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