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Interferometry

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  • How to Acquire High-Resolution Anatomic Ocular Tissue Information with Optical Coherence Tomography (OCT)

    Optical Coherence Tomography (OCT) is a non-invasive, non-contact imaging modality used to visualize and monitor changes to the morphology of biological tissue. OCT employs low-coherence interferometry to create cross-sectional images that reveal sub-surface details of the tissues of interest. In the most common ophthalmic applications OCT systems use near-infrared light to generate high-resolution, volumetric images of tissue microstructures including the cornea, iris, crystalline lens, vitreous and retina. These images can enhance insight into pathological conditions such as glaucoma, age-related macular degeneration or diabetic retinopathy.
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  • How Digital Microscopy can Contribute to Efficient Workflows for Microelectronics and Electronics

    This report explains how users can benefit from the digital microscope portfolio of Leica Microsystems to attain cost-effectiveness over entire workflows in research and development (R&D), product innovation, process engineering, production, quality control and assurance (QC/QA), and failure analysis (FA).
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  • A Healthy Dose of Interferometry

    Although interferometry may once have been dismissed by the medical community because of its inability to see inside the human body, its application within the wider biomedical arena is continuing to grow and evolve; so much so that the technique is now used in the production of prosthetic limbs, research in dentistry and even for cultivating stem cells.
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  • Characterization of Thin Films Using High Definition Confocal Microscopy

    Thin film characterization technologies are in high demand, given the wide-spread use of coatings in all engineering and science fields. The properties of thin films can vary dramatically, i.e. thickness, optical and electrical properties, hardness, etc., that is difficult to find a general purpose characterization technique.
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  • Automated Digital 3D Topography Measurement with the Leica DCM 3D Dual Core Measuring Microscope

    The precise measurement of surface structures and topography is the key thing during the production, control and development in many sectors of industry or research. Because very often there is not possible to use some contact methods for performing this task new optical methods based on interferometry and confocal technology started to be available for non-contact surface metrology in the recent years.
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  • 3D Surface Measurement: Characterization of Solar Cells

    Solar energy is becoming more and more important all around the globe. Not only is it available in unlimited supply, it also offers key advantages for protecting the climate and the environment. Every year, many thousands of solar cells are produced worldwide for new photovoltaic plants. An important criterion for quality control is 3D characterization of the light-absorbing surface. In the past, this required time-consuming SEM analysis. A Dual-Core 3D Measuring Microscope that combines confocal and interferometry technology offers non-contact, high-precision analysis of the surface texture of solar cells in a matter of seconds.
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  • 3D Measuring Microscope Combines Confocal and Interferometry Techniques

    In recent years, interferometers and optical imaging profilers based on confocal technology have been competing fiercely to conquer the non-contact surface metrology market. They are both capable of accurately and reliably measuring surface topographies on a millimeter to nanometer scale. Leica Microsystems presents a complete solution which combines both confocal and interferometry techniques: the Leica DCM 3D Dual-Core 3D Measuring Microscope.
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