Dichroic Beamsplitter Plates allow NIR light to pass through and reflect visible light at 45 incident angle. They have a very steep transition between the region of transmission and reflection. They have a hard and dielectric coating using interference ranther than absorption to isolate the spectral bands. Unlike colored glass filters the cut-off wavelength will shift to shorter wavelengths with an increase in angle of incidence.

• Material: BK7 fine annealed
• Diameter Tolerance: +0/-0.2
• Thickness Tolerance: 5+/-0.1
• Incident Angle: 45°
• Flatness: 5 fringes
• Surface Quality: 60-40 scratch-dig
• Parallelism: <3’