UV/blue LED-phosphor device with short wave pass, long wave...
UV/blue LED-phosphor device with short wave pass, long wave pass band pass and peroit filters
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Color wheel assembly for lighting equipment
The cutoff wavelengths for the dichoric filters are selected to be different at the long and short wavelengths of the filter set, such that there is
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Color wheel assembly for lighting equipment
The cutoff wavelengths for the dichoric filters are selected to be different at the long and short wavelengths of the filter set, such that there is
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SPECTRAL FILTER FOR GREEN AND LONGER WAVELENGTHS
spectral filters are mechanically and optically stable, do not degrade over time, and offer superior transmittance for use as band pass, narrow band
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System and method for filtering output of a cathode ray tube
The filters may be short pass, long pass, or band pass to achieve the required adjustments to the light so that the print media is properly exposed.
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Infrared imager forming two narrow waveband images of the same...
This choice permits the patterned filters to be quite thin, and more readily formed into smaller elements allowing increased image resolution.
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Coarse wave division multiplexer
Long-pass or short-pass optical filters are used to reflect certain wavelengths while passing others.
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Method and apparatus for ply discontinuity detection
A difference circuit compares output signals from the two filters to create a difference signal.
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