US Patent Issued to Tokai Optical on April 21 for "Performance evaluation method for spectacle lens and non-transitory computer-readable storage medium" (Japanese Inventors)

ALEXANDRIA, Va., April 21 -- United States Patent no. 12,607,879, issued on April 21, was assigned to Tokai Optical Co. Ltd. (Okazaki, Japan).

"Performance evaluation method for spectacle lens and non-transitory computer-readable storage medium" was invented by Keisuke Ota (Okazaki, Japan) and Hitoshi Miura (Okazaki, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A performance evaluation method for a spectacle lens comprising calculating a change rate of a first component and a change rate of a second component with a computer to calculate at least one of a distortion evaluation value and a shaking evaluation value, the first component being a component in a first direction of a prism refractive index,...