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Our wave retarders are optimized at 560nm (140nm OPD) More cost effective than traditional wave plates, our wave retarders feature uniform birefringence, low haze, good dimensional stability, and excellent optical quality

API offers two versions of quarter wave retarder: medium temperature (65ºC) and high temperature, low haze (80ºC). Both are diacetate (CDA) based with protective masking on both sides.

API can laminate our quarter wave retarder films to both acrylic and glass for added durability and improved optics.

• 1/4 Wave in Medium & High Temperature Versions
• High Clarity
• Uniform Birefringence
• Polymer Based Cellulose Diacetate (CDA)
• Can be Laminated Between Glass or Acrylic for Increased Durabilty