WitrynaImproved vertical-scanning interferometry. We describe a method that combines phase-shifting and coherence-peak-sensing techniques to permit measurements with the height resolution of phase-shifting interferometry without the interval-slope limitation of lambda/4 per data sample of phase-shifting interferometry. WitrynaWhite-light vertical scanning interferometry (VSI) is a widely used and powerful technique for measuring surface characteristics such as topography or transparent film structure. It is best suited for measuring smooth to moderately rough surfaces, and provides nanometer vertical resolution regardless of the objective’s NA or magnification.
(PDF) Improved Vertical-Scanning Interferometry - ResearchGate
Witrynaadshelp[at]cfa.harvard.edu The ADS is operated by the Smithsonian Astrophysical Observatory under NASA Cooperative Agreement NNX16AC86A Witryna29 gru 2024 · Surface reconstruction for micro-samples with large discontinuities using digital holography is a challenge. To overcome this problem, multi-incidence digital holographic profilometry (MIDHP) has been proposed. MIDHP relies on the numerical generation of the longitudinal scanning function (LSF) for reconstructing the … bixby haircut pictures
United States Patent US 6,989,905 B2 De Groot - ResearchGate
Witryna1 sie 2024 · A novel surface recovery algorithm for dual wavelength white led in vertical scanning interferometry (Vsi) 2024, Sensors (Switzerland) Dual differential confocal method for surface profile measurement with a large sensing measurement range 2024, Applied Optics Profilometry with Enhanced Accuracy Using Differential Structured … Witryna23 lis 2024 · Direct laser lithography is one of the typical methods used to manufacture such diffraction optical elements. By using a high magnification objective lens, it generates a laser beam with a spot size of less than 1 μm at the focal point. WitrynaVertical scanning interferometers are routinely used for the measurement of optical fiber connectors. There are increasing needs for measurements of such items as … datel powersaves 3ds download