An approach using the fringe projection technique to perform the 3D profile measurement for a plano-convex lens is
proposed. A fringe pattern is illuminated onto the lens object, and a CCD camera is employed to record the transmitted
fringes on the screen. Fringes on the obtained image are deformed both by the refractive index and the topography of the
object, and are analyzable to retrieve the 3D shape.
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