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Commercial
APPLICATIONS/MARKETS
SPECTROSCOPY AND BIOTECHNOLOGY APPLICATIONSREPRESENTATIVE BARR FILTER TYPES
Capillary ElectrophoresisBandpass (UV/Vis)
Fluorescence-based Instruments (DNA Sequencer, Flow Cytometer, Micro-Plate Reader)Bandpass (EX, EM)
 Dichroic and Polychroic Beam Splitters
 Multi-Notch
 Single-Notch
Raman InstrumentsBandpass
 Dichroic
 

Steep Edge

OPTICAL DETECTORS 
Filters for Photodiode, CCD, Thermopile, Pyroelectric, Lead Salt, InGaAsArray
 Bandpass
 Edge
 

Linear Variable

SEMICONDUCTOR PROCESSING-RELATED APPLICATIONS 
Lithographic SteppersBandpass (I-line, g-line)
 Correction
 Dichroic
 Mirror
MetrologyOrder-sorting (Linear Variable, Patterned Edge)
Optical-based Pyrometry

Bandpass

MEDICAL APPLICATIONS 
Clinical AnalyzersBandpass
OphthalmicRugate Notch
Respiratory Gas Monitors, Glucose Monitors

Bandpass (Mid-wave and Longwave IR)

ENVIRONMENTAL/SAFETY APPLICATIONS 
Chemical AnalyzersBandpass (UV, Vis, IR)
Explosive and Toxic Gas DetectionBandpass (MWIR)
Fire and Flame DetectionBandpass (MWIR)
 Edge Filter (MWIR)
Gas Analysis Instruments and LIDARBandpass
 Narrow Bandpass (UV, Vis, IR)
Monitoring Lamp Aging - water purificationBandpass (UV)
Tailpipe Emissions Analyzers

Bandpass (MWIR)

COLOR MEASUREMENT APPLICATIONS 
Precision Color/Light Measurement SystemsBandpass
 Color Correction
 Filter Array
 

Photopic

THERMAL IMAGING APPLICATIONS 
Thermal Imaging Cameras, Night Vision SystemsBandpass
 Long Wave Pass (MWIR and LWIR)
 

Wideband







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Barr Associates, Inc. Precision Thin Film Coatings and Optical Filter Solutions