Fluorescence Bandpass Filter, Φ25mm (Mounted), FWHM=319.2nm, United Optical Technology Co., Ltd (CAT#: STEM-OP-3559-YJL)

Fluorescence Bandpass Filter, Φ25mm (Mounted), FWHM=319.2nm, model 199882, is manufactured by United Optical Technology Co., Ltd.
Fluorescence Bandpass Filters are ideal for fluorescence imaging applications. The transmission band of a bandpass filter is surrounded by two cutoff bands. It allows only part of the wavelengths in the spectrum to pass. It is often used to transmit a part of the spectrum while cutting off all other wavelengths.
Bandpass filters are suitable for a variety of applications such as spectroscopy, clinical chemistry or imaging. United Optical Technology has launched two standard fluorescent bandpass filters with diameters of 12.5mm and 25mm, packaged and unpackaged, and wavelengths of 340nm-850nm.

Diameter: Φ25mm (Mounted)
Center Wavelength(CWL): 850nm
Filter Thickness: 3.5mm
Clear Aperture: ≥21mm
Transmission Band: Tavg＞93%@695-1005nm
Minimum Bandwidth: 310nm
FWHM (Nominal): 319.2nm
Blocking Band 1: ODavg＞6@300-680nm
Blocking Band 2: ODavg＞6@1027.5-1064nm
Blocking Band 3: ODavg＞7@1064nm
Blocking Band 4: ODavg＞6@1064-1700nm
Blocking Band 5: -
Blocking Band 6: -
Blocking Band 7: -
Blocking Band 8: -
Blocking Band 9: -
Blocking Band 10: -
Material: UV Fused Silica
Diameter Tolerance: +0.0/-0.1mm
Mount Thickness: 3.5mm
Substrate Thickness: 2.0mm
Substrate Thickness Tolerance: ±0.1mm
Surface Quality: 60-40
AOI: 0±5°
Note: Arrow on ring indicates preferred direction of propagation of light.

This filter has the characteristics of high transmittance and deep cut-off depth. It is widely used in fluorescence microscopy imaging, fluorescence optical instruments, life sciences, education and scientific research and other related fields.

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