US Patent Issued on Oct. 20 for "Method and apparatus for determination of pupil function for a double pass optical system whereby the image surface is diffusive" (Canadian, American Inventors)

ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,765,767, issued on Oct. 20.

"Method and apparatus for determination of pupil function for a double pass optical system whereby the image surface is diffusive" was invented by Ellis Israel Betensky (Halifax, Canada) and Daniel Jeremy Betensky (Providence, R.I.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An apparatus for determining the refractive characteristics of an imaging system having an inaccessible and diffusive image surface, such as the human eye. Refractive characteristics of the entire wavefront are ascertained by measuring the refractive power of a representative sample of segments of the pupil. By illuminating only a selected segment, the...