US Patent Issued to SEIKO EPSON on June 17 for "Attachment optical system and projection display system" (Japanese Inventor)

ALEXANDRIA, Va., June 19 -- United States Patent no. 12,332,414, issued on June 17, was assigned to SEIKO EPSON Corp. (Tokyo).

"Attachment optical system and projection display system" was invented by Hirotaka Yanagisawa (Azumino, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An attachment optical system is detachably attached to a magnification side of a projection optical system of a projection display device, and projects light emitted from the projection optical system on an imaging plane different from a magnification side imaging plane of the projection optical system. The attachment optical system includes an optical element having a second optical axis as an extension of a first optical axis o...