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Spectrogon manufactures and develops optical filters, optical coatings and holographic diffraction gratings
al mirrors  aluminium mirrors  au mirrors  bbar coatings  broad bandpass filters  longwave pass filters  mulitlayer filters  shortwave pass filters  Spectrogon  stock filters  surface mirrors  vcoating  vis filters  wide bandpass filters 
www.spectrogon.com - 2009-02-06
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Brysen Optical Corporation provides quality service for vacuum coatings, thin film coatings, patterned substrates and reticles found in many applications ...
circular variable filter 
www.brysenoptical.com - 2009-02-07
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optical filters
first surface mirrors
front surface mirror
optical coatings
air
amplifiers
diplexers
filters
attenuators
interference filters
filter
first surface mirror
filtration
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