Nikon patents a camera hand grip strap and two zoom lenses with Diffractive Optical (DO) element inside
Nikon filed a paten 2013-134682t in Japan for a new 3-point camera hand grip strap. Similar products already exists from various manufacturers, including the Nikon AH-4.
New patents were also filed for a 18-300mm (APS-C) and 28-300mm (full frame) lenses, both with a Diffractive Optical (DO) element inside. Canon has a good article on their website describing the advantages of Diffractive Optical elements in lens design. The 18-300mm lens contains 16 elements in 13 groups and 3 aspherical elements. The 28-300mm lens has 19 elements in 14 groups and 3 aspherical elements.
This entry was posted in Nikon Lenses, Nikon Patents and tagged Diffractive Optical (DO) element
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