Angle Tolerant Dichroics

The spectral data of interference filters are by nature very dependent on the angle of incidence. Typically the dichroics are defined for the 45 degrees angle of incidence (AOI). AHF analysentechnik offers dichroics for special geometries like 11 degrees AOI. Small optical systems often require dichroics with non- typical data, such as 31 to 59 degrees angle of incidence (e.g. defined by the optical data of the lenses) AHF analysentechnik offers different versions of angle tolerant dichroics: The spectral shift will just be half as wide as in comparable standard dichroic designs.