US Patent Issued to Dragerwerk on Oct. 14 for "Illumination device and illumination process with contrast variation" (German Inventor)

ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,446,137, issued on Oct. 14, was assigned to Dragerwerk AG & Co. KGaA (Lubeck, Germany).

"Illumination device and illumination process with contrast variation" was invented by Hanno Kretschmann (Lubeck, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "An illumination device (100) with a main illumination unit (1) and an auxiliary illumination unit (2). Each illumination unit (1, 2) includes a plurality of light source groups, respectively, which can be controlled individually. The maximum illuminance achieved by the main illumination unit (1) on an illuminated surface (Ob) is several times greater than the maximum illuminance achieved by the auxili...