US Patent Issued to SEIKO EPSON on March 17 for "Laser interferometer" (Japanese Inventor)

ALEXANDRIA, Va., March 17 -- United States Patent no. 12,578,179, issued on March 17, was assigned to SEIKO EPSON Corp. (Tokyo).

"Laser interferometer" was invented by Kohei Yamada (Shiojiri, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A laser interferometer includes: a laser light source configured to emit first laser light; an optical modulator including a vibration element that generates a vibration component in a direction intersecting an incident surface of the first laser light, and configured to modulate the first laser light by using the vibration element to generate second laser light including a modulation signal; a photodetector configured to receive the second laser light and third laser...