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OPTICAL PLASTIC PRODUCT, AND PLASTIC SPECTACLE LENS AND SPECTACLES

  • US 20200132886A1
  • Filed: 12/23/2019
  • Published: 04/30/2020
  • Est. Priority Date: 07/03/2017
  • Status: Active Grant
First Claim
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1. An optical plastic product having an optical multilayer film disposed on one or both surfaces of a base made of plastic, directly or via an intermediate film, whereinthe optical multilayer film includes a tensile-stress high-refractive-index layer having tensile stress as internal stress and made of a high refractive index material, and a low refractive index layer made of a low refractive index material, andthe tensile-stress high-refractive-index layer is disposed with a physical film thickness of not greater than 10 nm, in a first layer as counted from the base side in the optical multilayer film.

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