US Patent Issued to Onto Innovation on Oct. 14 for "Interferometer with auxiliary lens for measurement of a transparent test object" (Arizona Inventor)

ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,442,717, issued on Oct. 14, was assigned to Onto Innovation Inc. (Wilmington, Mass.).

"Interferometer with auxiliary lens for measurement of a transparent test object" was invented by Michael B. North Morris (Tucson, Ariz.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A Mach-Zehnder interferometer is configured for measuring a transparent test object, such as measuring the power of a lens. The test object, for example, may be an interocular lens. The interferometer splits an illumination beam into a reference beam and test beam. The test beam is transmitted through the test object and one or more auxiliary lenses. The configuration and respective posit...