Beam splitter as mirror
Neutral beam splitters divide light radiation without altering its spectral distribution, resulting for example in a semi-transparent mirror. This type of mirror finds application in optical measurement technology to produce two corresponding signals or images at distinct locations. A beam splitter (or beamsplitter, power splitter) is an optical device which can split an incident light beam (e. a laser beam) into two (or sometimes more) beams, which may or may not have the same optical power (radiant flux). Cut and ground to specific tolerances and exact angles, prisms are polished blocks of glass or other transparent materials that can be.
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