Nikon Patents: NIKKOR Z 22-70mm f/2.8, 70-300mm f/4.7-5.8, 24-220mm f/3.7-6.4 Lenses

Nikon has filde several new Z-mount lens patents for NIKKOR Z 22-70mm f/2.8, 70-300mm f/4.7-5.8 and 24-220mm f/3.7-6.4 Lenses for Nikon full frame mirrorless cameras.

[Publication number] P 2019553669
[Publication date] May 9, 2022
[Patent application title] Variable-magnification optical system , Optical equipment, and method of manufacturing variable magnification optical system

Example 1 (22-70mm F2.8)

Variable magnification ratio 2.99 
Focal length 22.7 50.0 67.9 
F number 2.92 2.92 2.92 
Angle of view 91.10 45.68 33.64 
Image height 19.32 21.60 21.60 
Overall length 188.45 157.95 163.95 
Back focus 11.75 20.19 25.26

Example 6 (70-300mm F4.7-5.8)

Variable magnification ratio 4.05 
Focal length 72.1 100.0 292.0 
F number 4.74 4.81 5.88 
Angle of view 34.32 24.20 8.28 
Image height 21.60 21.60 21.60 
Overall length 193.32 211.66 248.32 
Back focus 38.32 39.78 62.52

Example 7 (24-210mm F3.5-6.5)

Focal length 24.7 70.0 210.0 
F number 3.47 5.31 6.52 
Angle of view 85.94 32.52 11.08 
Image height 19.90 21.60 21.60 
Overall length 141.66 173.63 194.45 
Back focus 23.35 32.36 13.26

Example 9 (24-220mm F3.7-6.4)

Variable magnification ratio 8.97 
Focal length 24.8 70.0 222.0 
F number 3.69 5.39 6.42 
Angle of view 85.32 33.28 10.80 
Image height 20.30 21.60 21.60 
Overall length 152.38 168.67 204.50 
Back focus 13.25 40.90 75.50

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