Polka Dot Beamspliter / PDBS

The polka dot beamsplitter is a beamsplitter that has aluminum coating of halftone dots (polka dots) on the glass substrate.
It has a low dependence on the incident angle and can be used in a wide range of wavelengths from ultraviolet region to the infrared region.

Common Specifications

Material Synthetic fused silica
Parallelism <3′
Coating Front surface: Al+MgF2
Rear suftace: Uncoated
Recommnnded Angle of Incidence 0 - 45°
Wavelength Range 250 - 2200nm
Surface Quality (Scratch-Dig) 80 - 50
Dot Pitch 0.3mm
Clear Aperture Circle except surrounding 1.5mm

 

Schematic Outline Drawing

 

Part Number Reflectance : Transmittance Diameter
φD
Thickness
t
Transmission
(Wavelength range 555nm, angle of incidence: 0°)
PDBS70-25.4C1.5 70:30 φ25.4mm 1.5mm 30%(+0/-5%)
PDBS70-50.8C1.5 70:30 φ50.8mm 1.5mm 30%(+0/-5%)
PDBSH-25.4C1.5 50:50 φ25.4mm 1.5mm 50%(+0/-5%)
PDBSH-50.8C1.5 50:50 φ50.8mm 1.5mm 50%(+0/-5%)
PDBS30-25.4C1.5 30:70 φ25.4mm 1.5mm 70%(+0/-5%)
PDBS30-50.8C1.5 30:70 φ50.8mm 1.5mm 70%(+0/-5%)
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