Beam expander: Difference between revisions

}}</ref> The resulting plane illumination, with a near one-dimensional (or line) cross section, eliminates the need of point-by-point scanning and has become important for applications such as [[N-Slit interferometer|N-slit interferometry]], [[microdensitometer|microdensitometry]], and [[microscopy]]. This type of illumination can also be known in the literature as light sheet illumination or selective plane illumination.