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glass circular polarizer

Circular Polarizers

API’s circular polarizing filters are optimal for display, camera, and sensor applications where sensitivity to linearly polarized light is an issue, but glare reduction is required. Circular polarization is also used in passive 3D applications as an alternative to a linear polarizer filter.

API circular polarizers combine a linear polarizer and a quarter wave retarder. We offer standard products or custom laminations to meet your design needs.  Our 50+ years of experience allow us to produce a filter that has excellent glare reduction, high resolution, and very good environmental stability for all your display and imaging requirements.

  • Various thicknesses available
  • Acrylic and glass laminated circular polarized options available
  • Various colors and transmissions available
  • Laser and waterjet cutting services for custom requirements
  • Replacements for Polaroid and 3M HNCP10, HNCP37, HNCP37NG, HNCP42

Want to learn more about circular polarization? See how it works.

Optimal Glare Reduction for Emissive Displays

Electroluminescent (EL), field emissive displays (FED), light emitting diode (LED), and organic light emitting diode (OLED) applications benefit greatly in bright light environments from API’s circular polarizing filters.

  • glass circular polarizer

    Circular Polarizer Film

    API circular polarized film is an excellent solution in applications that require glare reduction due to reflected light. Browse API’s polarizing film products and specifications below.

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  • acrylic linear and circular

    Acrylic Circular Polarizer Filters

    Choose from a broad range of acrylic circularly polarized filters, available in multiple transmissions, colors, finishes and thicknesses.  In-stock and custom sizes.

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  • acrylic circular polarizers

    Glass Circular Polarizers

    API glass circular polarizers are an excellent solution in applications that require glare reduction due to reflected light. Browse API circular polarizer glass products and specifications below.

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  • glass circular polarizer

    Stock Filters

    We carry a variety of already cut to size circular polarizer filters for your evaluation and design application needs.  If you don’t see the size you require, just ask!  API can help with our in-house custom laser and waterjet cutting.

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The Clear Choice for Polarized Products

Turn your product ideas into successful solutions by partnering with API, a global leader in the field of optical technology. Our expertise in polarization is backed by nearly 60 years of experience and industry-leading product development standards, including ISO 9001:2015 certification for quality control.

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