25.4mm Sq 50R/50T, VIS-NIR Polka-Dot Beamsplitters

Product Details 50/50 and 30/70 Reflection/Transmission Ratios Available B270 Substrates for High Performance from 400 – 2000nm UV-NIR Versions Available VIS-NIR Polka-Dot Beamsplitters feature a constant reflection/transmission ratio over the VIS to NIR spectrum. A vacuum deposited enhanced aluminum coating on SCHOTT B270 substrates, with fixed square apertures guarantees 30/70, 50/50 reflection/transmission ratios from 400 to 2000nm. Incident light is reflected by the coated area and is transmitted through the surrounding uncoated substrate. VIS-NIR Polka-Dot Beamsplitters are not angle sensitive, therefore they are ideal for splitting energy from a radiant light source with a beam diameter of at least 2mm. These beamsplitters are especially useful with broadband, extended sources, such as tungsten, halogen, and xenon lamps, and for use in monochromators, spectrophotometers, and other optical systems. Note: The surface of these beamsplitters is very sensitive and should never be touched when handling the optic. If cleaning is required to remove dust particles, non-contact cleaning using clean compressed air is recommended. Specifications General Type: Standard Beamsplitter Physical & Mechanical Properties Center to Center Spacing (mm): 0.15 Clear Aperture (%): 90 Construction: Polka-Dot Dimensions (mm): 25.4 x 25.4 +0.0/-0.5 Parallelism (arcmin): <3 Thickness (mm): 1.65 ±0.1 Optical Properties Angle of Incidence (°): 0 - 45 Coating: Square Aluminum (AlMgF 2 ) Apertures Minimum Aperture (mm): 2.00 Reflection/Transmission Ratio (R/T): 50/50 Reflection/Transmission Tolerance (%): ±5 @ 45° Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More B270 Surface Quality: 80-50 Wavelength Range (nm): 400 - 2000 Environmental & Durability Factors Operating Temperature (°C): 150 Maximum Regulatory Compliance RoHS 2015: Compliant × Certificate of Conformance: View × Reach 247: Compliant ×