US Patent Issued to Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO on Nov. 4 for "Optical element exchange unit" (Dutch Inventors)

ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,463,519, issued on Nov. 4, was assigned to Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO ('s-Gravenhage, Netherlands).

"Optical element exchange unit" was invented by Stefan Kuiper ('s-Gravenhage, Netherlands) and Martin Paul Alfred Kooper (Rotterdam, Netherlands).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical element exchange unit, has a rotatable wheel e.g. with different filters. The wheel has first soft magnetic teeth protruding from a soft magnetic part of the wheel at even angular offset along at least part of a ring around a rotation axis of the wheel. The optical element exchange unit has a stator comprisin...