Beam splitters, also known as prisms, are optical components used to divide a beam of light into two or more separate beams. They are typically made from glass or plastic and can be used for a variety of applications, such as spectroscopy, imaging, and laser beam splitting. Prisms are often used in optical systems to create multiple images of the same object. They can also be used to create a rainbow effect when light passes through them. Beam splitters are an essential component of many optical systems and are used in a wide range of industries.