An optical assembly includes a plurality of polarizing beamsplitters (PBS) including a first PBS and a second PBS. Each PBS includes a similar splitting optical coating. The splitting optical coating on the second PBS is oriented as rotated 90° relative to the splitting optical coating on the first PBS. There may be a third PBS offset to another side of the first PBS. The splitting optical coating on the third PBS, which is similar to the splitting optical coating on the first PBS and the second PBS, is oriented as rotated 90° relative to the splitting optical coating on the first PBS. The splitting optical coatings on the second PBS and the third PBS may be oriented in the same direction. A beamsplitting assembly may be formed from the optical assembly by coupling image sensors to major surfaces of the second PBS and the third PBS.