, also known as just Nikon, is a Japanese multinational corporation headquartered in Tokyo, Japan, specializing in optics and imaging products. Its products include cameras, camera lenses, binoculars, microscopes, ophthalmic lenses, measurement instruments, and the steppers used in the photolithography steps of semiconductor fabrication, of which it is the world’s second-largest manufacturer. The companies held by Nikon form the Nikon Group.