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  • Polarizing Microscopes
    Polarizing microscopes or polarized light microscopes use two polarizers (one on either side of the specimen) that are positioned perpendicular to each other so that only light which passes through the specimen reaches the eyepiece. Light is polarized in one plane as it passes through the first
  • 3D Visualization for Industrial Quality Inspection
    ) Polarized light: is used to supress the reflec-. tions or for documentation of plastic materials. 5) Coaxial illuminator with directed light: In. the applications described above, the directed. light creates a three-dimensional impression. of the specimen. This is helpful in many cases
  • Adaptive wavefront correction in two-photon microscopy using coherence-gated wavefront sensing
    erroneous astigmatism values if linearly polarized light is used. However, these errors can be avoided by the use of circularly polarized light (17). Our setup, therefore, contains a λ/4 wave-plate in the sample arm (Fig. 1), which ensures that the light is circularly polarized in the sample. Furthermore
  • Mie scattering distinguishes the topological charge of an optical vortex: a homage to Gustav Mie
    . on the SLM for converting the Gaussian beam coming from the laser into a. LG beam. The first diffraction order is selected with a pinhole and coupled. into the 60× microscope objective. A 100× objective is used as a condenser to. collect the light scattered by the sphere in the forward direction
  • Principles of Polarization Contrast - A Step-by-Step Guide
    staining. When illuminated with polarized light, birefringent structures can produce specific color effects which can be easily recognized using a microscope. This makes it easy to identify e.g. starch grains in a given biological specimen. In life sciences, polarization microscopy is frequently
  • Measuring Residual Stress In Transparent Plastics
    purposes. For nontransparent plastics, choices are limited to destructive tests such as layer removal, section removal, and stress-corrosion tests. Figure 1. Schematic illustrating the principle of polarized light transmission. S1 and S2 represent the principal stresses at a point, and R
  • Medical Device Link . Identifying and Preventing Contamination from Pharmaceutical Packaging
    to determine the optical properties and physical morphology of contaminants and functional ingredients for elastomers, drug formulations, and, in one case, biopsied tissue samples. The polarizing microscope uses polarized light interaction with an optically active specimen to provide measurements of key
  • Medical Device Link . Medical Plastics Failures from Heterogeneous Contamination
    magnification and a long working distance is invariably the preferred first step for detailed examinations. If the samples are optically transparent, equipment with polarized light capability is also very useful. Many embedded particles are surrounded by molded-in stresses from the modulus mismatch

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