ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,411,323, issued on Sept. 9, was assigned to NITTOH INC. (Suwa, Japan).
"Optical system having intermediate image formed therein" was invented by Takahiko Matsuo (Suwa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An optical system includes a first optical subsystem disposed on an enlargement side and a second optical subsystem disposed on a reduction side with an intermediate image in between. The first optical subsystem includes: a first lens group that is disposed on the enlargement side of a first stop with a first distance, in which other lenses could be disposed but no other lenses are disposed, and is provided on the enlargement side with...