Wide-angle zoom lenses for 35mm full-frame mirrorless cameras from CANON

CANON filed a patent describing optical designs of wide-angle zoom lens for 35mm full-frame mirrorless cameras.

【公開番号】特開2021-56320(P2021-56320A) click here
【公開日】令和3年4月8日(2021.4.8)
【発明の名称】ズームレンズ及びそれを有する撮像装置

Embodiment 1
Zoom ration 1.88
Focal length 9.27 15.01 17.46 mm
F number 4.12 4.12 4.12
Half angle of view 66.80 55.25 51.10
Image height 21.64 21.64 21.64 mm
Lens length 137.08 131.94 133.25 mm
BF 13.49 13.49 13.49 mm


Embodiment 2
Zoom ratio 2.00
Focal length 8.00 14.67 16.00 mm
Ｆ number 4.12 4.12 4.12
Half angle of view 69.70 55.87 53.52
Image height 21.64 21.64 21.64 mm
Lens length 132.89 126.29 127.00 mm
BF 10.00 10.00 10.00 mm


Embodiment 3
Zoom ratio 1.75
Focal length 10.00 15.00 17.46 mm
Ｆ number 4.12 4.12 4.12
Half angle of view 65.19 55.27 51.10
Image height 21.64 21.64 21.64 mm
Lens length 135.49 124.63 123.10 mm
BF 14.19 21.45 25.02 mm


Embodiment 4
Zoom ratio 1.88
Focal length 9.27 15.01 17.46 mm
Ｆ number 4.12 4.12 4.12
Half angle of view 66.80 55.24 51.10
Image height 21.64 21.64 21.64 mm
Lens length 137.95 129.32 129.39 mm
BF 13.49 13.49 13.49 mm


Embodiment 5
Zoom ratio 2.66
Focal length 9.01 18.07 24.00 mm
Ｆ number 4.12 4.12 4.12
Half angle of view 67.40 50.13 42.04
Image height 21.64 21.64 21.64 mm
Lens length 146.16 138.36 143.68 mm
BF 11.45 11.45 11.45 mm