Plate Beamsplitters are part-mirrors that reflect part of incident energy and transmit the rest

General Specifications 

Material                            N-BK7

Dimension tolerance      ±0.1mm

Parallelism                       3 arc min

Surface quality               60-40 S/D

Surface flatness             λ/4@632.8nm

Clear aperture              >90%

Bevel                              Protective bevel

Front surface (S1)        Partial reflective coating

Back surface (S2)         AR coating

Reflectance/Transmittance         R/T=50/50% ±5%         Other ratio is available

( R,T are the average of S- and P-pol)

Incident of angle: 45°±2°