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Crystals Compensate for Birefringence in Polymer

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Daniel S. Burgess

The processing of optical polymers in the production of liquid crystal displays (LCDs) and lenses tends to produce birefringence in the materials. Manufacturers may compensate for this phenomenon by using alternative fabrication techniques, such as solvent casting or long-cycle-time injection molding, but these carry added expense and slower production times that can lead to higher costs. Now researchers at Keio University in Yokohama, Japan, and at Japan Science and Technology Corp. in Kawasaki have developed an approach that introduces inorganic crystals with the opposite birefringence to...Read full article

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    Published: October 2003
    Glossary
    injection molding
    Injection molding is a manufacturing process used to produce parts by injecting molten material into a mold. It is widely used for creating a variety of plastic products, but it can also be used with metals, glass, elastomers, and confections. The process involves several key steps: Clamping: The two halves of the mold are securely closed using a clamping unit. Injection: Molten material (usually plastic) is injected into the mold cavity through a nozzle by an injection unit. The...
    Consumercrystalsinjection moldingLaser Beamlensesliquid crystal displaysoptical polymersOpticsResearch & TechnologyLasers

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