Infrared Bandpass Filter, Φ20mm, FWHM: 0.04±0.02μm, CWL: 2.35±0.03μm, United Optical Technology Co., Ltd (CAT#: STEM-OP-4293-YJL)

Infrared Bandpass Filter, Φ20mm, FWHM: 0.04±0.02μm, CWL: 2.35±0.03μm, model 200024, is manufactured by United Optical Technology Co., Ltd.
Mid- and far-infrared filters can transmit light with a specific absorption spectrum of a substance while blocking other unnecessary interfering light, so they are widely used in environmental monitoring, safety detection, FLIR, etc. For example: detection of carbon dioxide (CO₂), methane (CH₄), carbon monoxide (CO), ammonia (NH₃), moisture (H₂O), ethanol (CH₃CH₂OH), sulfur dioxide (SO₂), nitrous oxide (N₂O) and other substances.

Base Material: infrared quartz
Diameter: 20mm
Thickness: 2mm
Center Wavelength: 2.35±0.03μm
Peak Transmittance: ≥80
Half Bandwidth: 0.04±0.02μm
Blocking Range: 200-3000nm
Linear Error: +0 / -0.2mm
Thickness Tolerance: ±0.2 mm
Surface Quality: 80/50
Clear Aperture: 0.9
Blocking Depth: Tmax <1%;Tavg <0.1%

Mid- and far-infrared filters can transmit light with a specific absorption spectrum of a substance while blocking other unnecessary interfering light

Infrared Bandpass Filter, Φ10mm, FWHM: 0.14±0.02μm, CWL: 2.42±0.03μm, United Optical Technology Co., Ltd (CAT#: STEM-OP-4294-YJL)
Infrared Bandpass Filter, Φ10mm, FWHM: 0.14±0.02μm, CWL: 3.33±0.03μm, United Optical Technology Co., Ltd (CAT#: STEM-OP-4295-YJL)
Infrared Bandpass Filter, Φ10mm, FWHM: 0.20±0.02μm, CWL: 3.33±0.05μm, United Optical Technology Co., Ltd (CAT#: STEM-OP-4296-YJL)
Infrared Bandpass Filter, Φ25mm, FWHM: 0.14±0.02μm, CWL: 3.33±0.03μm, United Optical Technology Co., Ltd (CAT#: STEM-OP-4297-YJL)
Infrared Bandpass Filter, Φ10mm, FWHM: 0.22±0.02μm, CWL: 3.43±0.03μm, United Optical Technology Co., Ltd (CAT#: STEM-OP-4298-YJL)
Infrared Bandpass Filter, Φ25mm, FWHM: 0.20 ± 0.02μm, CWL: 3.33±0.05μm, United Optical Technology Co., Ltd (CAT#: STEM-OP-4299-YJL)