A beamsplitter is a common optical component that partially transmits and partially reflects an incident light beam; this splitting usually occurs in unequal proportions. This chapter explains the basic principles that govern light passing through a beamsplitter. Various types of beamsplitters and their applications are presented. In addition to the function of dividing light, beamsplitters can be employed to recombine two separate light beams or images into a single path. The concept of light passing through beamsplitters is applicable to image formation and building optic/optical devices. Three experimental ...

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