RF 18mm F1.8, 20mm F1.4, 21mm F1.8, 24mm F1.8, 28mm F1.8

CANON filed a patent describing wide-angle prime lenses for 35mm full-frame mirrorless cameras.

【公開番号】特開2021-193406(P2021-193406A)　click here
【公開日】令和3年12月23日(2021.12.23)
【発明の名称】光学系およびそれを有する撮像装置

Embodiment 1
Focal length (mm): 18.54
F number: 1.85
Half angle of view (degree): 49.41
Image height (mm): 21.64
Lens length (mm): 107.66
Back focus (mm): 14.09


Embodiment 2
Focal length (mm): 23.83
F number: 1.85
Half angle of view (degree): 42.24
Image height (mm): 21.64
Lens length (mm): 104.66
Back focus (mm): 15.90


Embodiment 3
Focal length (mm): 24.65
F number: 1.85
Half angle of view (degree): 41.27
Image height (mm): 21.64
Lens length (mm): 102.66
Back focus (mm): 14.91


Embodiment 4
Focal length (mm): 20.48
F number: 1.44
Half angle of view (degree): 46.56
Image height (mm): 21.64
Lens length (mm): 124.66
Back focus (mm): 13.16


Embodiment 5
Focal length (mm): 21.36
F number: 1.85
Half angle of view (degree): 45.37
Image height (mm): 21.64
Lens length (mm): 105.66
Back focus (mm): 14.88


Embodiment 6
Focal length (mm): 21.36
F number: 1.85
Half angle of view (degree): 45.37
Image height (mm): 21.64
Lens length (mm): 104.66
Back focus (mm): 13.88


Embodiment 7
Focal length (mm): 21.36
F number: 1.85
Half angle of view (degree): 45.37
Image height (mm): 21.64
Lens length (mm): 104.66
Back focus (mm): 13.82


Embodiment 8
Focal length (mm): 28.08
F number: 1.85
Half angle of view (degree): 37.61
Image height (mm): 21.64
Lens length (mm): 92.66
Back focus (mm): 12.16