Why do they call the Nikon camera lens NIKKOR?

Just wondering why. XP

Nikkor is the brand of lenses produced by Nikon Corporation, including camera lenses for the Nikon F-mount.

The Nikkor brand was introduced in 1932, a Westernised rendering of an earlier version an abbreviation of the company's original full name Nippon ("Japan Optics"; also means "sunlight" and is the name of a Japanese town.) In 1933, Nikon marketed its first camera lens under the Nikkor brand name, the "Aero-NIKKOR," for aerial photography[1].

Nikon originally reserved the Nikkor designation for its highest-quality imaging optics, but in recent history almost all Nikon lenses are so branded.