HPR Series – HPR-1100BGHHybrid PIN Receiver ModuleFigure 4 : Approximate field of viewNote 1 : For incident radiation at angles ≤ 𝛼/2, the photosensitive surface is totally illuminated. Note 2: For incident radiation at angles > 𝛼/2, but ≤ 𝛼′/2, the photosensitive surface is partially illuminated. www.excelitas.com Page 5 of 7 HPR Series - HPR-1100BGH_Rev.2021.04