Nikon has just filed a new patent of 70-300mm f/4.5-6 VR CX lens. It is a new Nikon 1 NIKKOR lens with Phase Fresnel (PF) element.
From NR :”Therefore in the zoom lens ZL according to this embodiment, a diffraction optical surface that has a function to deflect a ray, utilizing the diffracting phenomena of diffraction grating or Fresnel’s zone plate, is created on the surface of an optical member, such as glass or plastic, so that good optical performance is acquired by this function.”
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