anti-reflection coatings; anti-reflection coatings in the infrared antireflection coatings sold as a part of optical elements; bandpass filters; beam splitter filters; beam splitters; beam splitters and beam splitters in the visible spectrum; coatings for filters; coatings for laser optics; coatings sold as a part of laser optics; coatings sold as a part of optical elements; color separation filters; dichroic filters; dual band filters; fluorescence filters; gas chromatograph identifiers; hyperspectral filter arrays; infrared filters; infrared long wavepass filters; infrared narrow wavepass filters; infrared short wavepass filters; infrared wide wavepass filters; laser optics; linear variable filters; low angle-shift bandpass filters; magnetic coatings sold as a part of magnetic media; miniature near infrared spectrometer; microwave reflectors for weather satellites; multi-colored reticles; multilayer antireflection coatings; multispectral filter array; narrow bandpass filters; narrow bandpass filters in the ultraviolet; near infrared spectrometer; neutral density filters; optical and laser coatings; optical elements; patterned optical coatings; patterned optical coatings on active device wafers; square band filters; transparent conductive coatings; transparent mirrors; ultraviolet filters; visible filters; wide bandpass filters