shadowgraph inspection of glass


  • Visual Precision Introduction Page

    Visual Precision is a manufacturer of precision optical devices, mostly used in dimensional gaging applications. Our standard products are designed to support the Optical Comparator (also known as a Shadowgraph) with Glass Replacement Screens, Vinyl and Mylar Overlays, and Fixture Bases.

  • US20120147178A1 - Heatable glazing inspection - …

    A method of inspecting a heatable glazing is disclosed. A heatable glazing comprises a heater array having at least one heater wire. The method comprises the steps of (i) illuminating the heatable glazing with a light source to produce a shadowgraph image of the heatable glazing; (ii) passing a sufficiently high electrical current through the ...

  • US20120147178A1 - Heatable glazing inspection - …

    A method of inspecting a heatable glazing is disclosed. A heatable glazing comprises a heater array having at least one heater wire. The method comprises the steps of (i) illuminating the heatable glazing with a light source to produce a shadowgraph image of the heatable glazing; (ii) passing a sufficiently high electrical current through the …

  • EP2005146B1 - Glazing inspection - Google Patents

    The shadowgraph of a glazing is characterised by illumination variations that are related to the transmitted distortion of the glazing, caused by thickness variations in the glass. These thickness variations result in an effect known as "wedge", where shallow, wedge-shaped sections of glass are seen, causing deflection of light resulting in ...

  • Module 5: Schlieren and Shadowgraph Lecture 26 ...

    As will be seen in the text of this module, schlieren and shadowgraph methods require simpler optics than interferometry. Shadowgraph is the simplest of all. The price to be paid is in terms Shadowgraph is the simplest of all. The price to be paid is in terms

  • Patents Assigned to Pilkington PLC - Justia Patents Search

    Abstract: A vehicle glazing is disclosed comprising a pane of tinted glass, tinted by at least 1.0 to 1.8 % wt. of total iron, having a low emissivity coating on its interior surface. The coating has an emissivity from 0.05 to 0.4 and may include a transparent conductive oxide (and optionally a ...

  • Measurement and Simulation of Striae in Optical …

    of striae shadowgraph pictures is a faster and more frequently used method. The evaluation and quantitative The evaluation and quantitative reconstruction of the inhomogeneities in glass based on the stri ae technique are the …

  • TIE-43 Optical properties of Zerodur - …

    TIE-43: Optical Properties of ZERODUR ... shadowgraph measurement that is used to characterize the striae quality in optical glass. Nevertheless the striae inspection ...

  • SonicEquipment.com | Shadowgraph

    This equipment was designed expressly for Shadowgraph inspection of plate glass and is used by the world’s leading glass manufacturers. Shining the brilliant white light, which approximates sunlight, directly through a glass sheet causes striae, or ‘seeds’, and other imperfections to cast shadows on a back drop.

  • Shadowgraph - Revolvy

    Shadowgraph is an optical method that reveals non-uniformities in transparent media like air, water, or glass. It is related to, but simpler than, the schlieren and schlieren photography methods that perform a similar function. Shadowgraph is a type of flow visualisation . In principle, we cannot directly see a difference in temperature, a …

  • SHADOWGRAPH TECHNIQUE - Thermopedia

    It is evident that the shadowgraph is not a method suitable for quantitative measurement of the fluid density. Owing to its simplicity, however, the shadowgraph is a convenient method of obtaining a quick survey of a flow in which the density changes in …

  • Hollow glass finishing Neck finish in glass hollowware

    Neck finish in glass hollowware N. Sesha Prakash* outlines the processes involved in hollow glass making. Parts of a glass container Finish - This is the top of the container above the neck ring parting line. It includes the sealing surface, bore and bead or collar. The sealing device (closure) can be in the finish or in the bore or mouth. The finish also …

  • Shadowgraph - Wikipedia

    Shadowgraph is an optical method that reveals non-uniformities in transparent media like air, water, or glass. It is related to, but simpler than, ...

  • shadowgraph - SupaPrice.co.uk

    shadowgraph - compare prices ... Shadowgraphs or Optical Comparators; Ideal for inspection of - dyes, molds, screws, gears, plastic, glass, electronic ...

  • Working at AMC - Inspection

    The inspection department (or view room as it was also called) was a glass panelled area situated on the ground floor, close to the factory entrance (later moved to make space for the semi-auto machines), and was responsible for checking samples from each batch of components of manufactured components.

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