ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,442,686, issued on Oct. 14, was assigned to SEIKO EPSON Corp. (Japan).
"Optical device and spectroscopy apparatus" was invented by Kohei Yamada (Shiojiri, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An optical device includes: a first optical system; and a second optical system. The first optical system includes a first light splitting device configured to split measurement light emitted from a first light source into a first measurement light and a second measurement light and then mix the split measurement light, a first mirror configured to add a first modulation signal by being moved in an entering direction of the first measurement light a...