Shortpass DichroicFilter 12.5x17.5mm Reflection Wavelength:910~1110nm Transmission Wavelength:400~820nm | GU OPTICS
Shortpass DichroicFilter 12.5x17.5mm Reflection Wavelength:910~1110nm Transmission Wavelength:400~820nm

Shortpass DichroicFilter 12.5x17.5mm Reflection Wavelength:910~1110nm Transmission Wavelength:400~820nm

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Product No. 238557

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Dia 12.5x17.5mm
CWL 850nm
Reflection Wavelength 910~1110nm
Transmission Wavelength 400~820nm
Material Optical Grade Float Glass (B270)
Transmitted Wavefront error λ/4 @ 633 nm
Parallelism <30arcsec
Surface Quality 40/20-60/40
Diameter Tolerance +0.0/-0.2mm
Thickness 2mm ±0.2mm
Central Wavelength Tolerance ±10nm
T Tavg>90%
Reflection Ravg>98%
CA >90%
Angle of Incidence 45°
Dichroic filters are used to transmit wavelengths that longer than the cut-on wavelength or shorter than the cut-off wavelength. Depending on the wavelength range of reflection or transmission, they are divided into long pass filter and short pass filter. Dichroic filters are ideal for applications of fluorescence excitation spectrum measurement, beam splitting or beam combination. Compared with the traditional design of long pass filter and short pass filter (0° angle of incidence) , Dichroic filters are designed for a 45° angle of incidence, which separate the reflection and transmission bands in space, and make it widely used in various optical systems and laboratory optical path.
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