US Patent Issued to NIKON on Dec. 16 for "Microscope objective lens, microscope optical system, and microscope device" (Japanese Inventors)

ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,498,553, issued on Dec. 16, was assigned to NIKON Corp. (Tokyo).

"Microscope objective lens, microscope optical system, and microscope device" was invented by Hidetsugu Takagi (Yokohama, Japan) and Hitoshi Hatada (Sagamihara, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A microscope objective lens (OL) is constituted by a first lens group (G1), a second lens group (G2) having a positive refractive power, a third lens group (G3) having a concave surface facing the image side, and a fourth lens group (G4) having a concave surface facing the object side. The first lens group (G1) is constituted by a plano-convex positive lens (L101) having a flat s...