Optical Beamsplitter

Beamsplitters are optical components which is used to split incident light at a defined ratio (10:90, 30:70, 50:50,70:30 or 90:10) into two separate beams. 

Beamsplitters are classified into two types as Cube Beamsplitters and Plate Beamsplitters depending on their construction. 

Cube Beamsplitters are constructed using two typically right-angle prisms. Cube Beamsplitters are easy to integrate. They have equal transmission and reflected optical path lengths. The advantage of Cube Beamsplitter is that it has no beam shift. 

Plate Beamsplitters consist of a thin, flat glass plate that has been coated on the first surface of the substrate and an anti-reflection coating on the second surface to remove unwanted reflections. They are light in weight and less in cost.