Dichroic Longpass Filter, Φ25mm, Reflection Wavelength: 370~400nm, Transmission Wavelength: 440~1200nm, United Optical Technology Co., Ltd (CAT#: STEM-OP-3959-YJL)

Dichroic Longpass Filter, Φ25mm, Reflection Wavelength: 370~400nm, Transmission Wavelength: 440~1200nm, model 238520, is manufactured by United Optical Technology Co., Ltd.
Ordinary Dichroic Filters Longpass can be used to transmit light longer than the starting wavelength.
Please wear finger cots when using it, and do not touch the surface of the short-pass filter directly with your fingers to avoid residual fingerprints affecting the light-passing effect of the short-pass filter. If the surface of the shortwave filter is dirty, use dust-free lens cleaning paper dipped in alcohol to wipe the lens surface. Do not wipe with cloth or paper with a very rough surface or water, otherwise the surface of the shortwave filter will be damaged.

Diameter: Φ25mm
Center Wavelength(CWL): 425nm
Reflection Wavelength: 370~400nm
Transmission Wavelength: 440~1200nm
Material: Optical Grade Float Glass (B270)
Transmitted Wavefront Error: λ/4@633nm
Parallelism: ＜30arcsec
Surface Quality: 40/20-60/40
Diameter Tolerance: +0.0/-0.2mm
Thickness: 2mm±0.2mm
Central Wavelength Tolerance: ±10nm
Transmission(T): Tavg＞80%
Reflection: Ravg＞98%
Clear Aperture: ＞90%
Angle of Incidence: 45°

The dichroic beam splitter is made of optical grade float glass and can be used for fluorescence excitation spectrum analysis, beam separation, and beam combination. The reflectivity Ravg of the reflective band is >98%. The incident angle of the dichroic splitting filter is 45°.

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