SSブログ

RF 28-70mm F2.8 and 28-86mm F2.8-5.6 [Patent]

CANON filed a patent discussing 28-70mm F2.8 and 28-86mm F2.8-5.6 for 35mm full-frame mirrorless cameras.

【公開番号】特開2021-156963(P2021-156963A) click here
【公開日】令和3年10月7日(2021.10.7)
【発明の名称】ズームレンズおよび撮像装置

Embodiment 1
Zoom ratio: 2.35
Focal length (mm): 28.84 36.81 67.90
F number: 2.91 2.91 2.91
Half angle of view (degree): 32.68 29.23 17.67
Image height (mm): 18.50 20.60 21.64
Lens length (mm): 117.09 109.31 101.58
Back focus (mm): 9.99 13.47 21.59
JPA 503156963_i_000004.jpg

Embodiment 2
Zoom ratio: 2.35
Focal length (mm): 28.84 37.17 67.90
F number: 2.91 2.91 2.91
Half angle of view (degree): 32.65 28.90 17.67
Image height (mm): 21.64 21.64 21.64
Lens length (mm): 132.62 122.81 111.18
Back focus (mm): 21.92 26.79 39.84
JPA 503156963_i_000006.jpg

Embodiment 3
Zoom ratio: 2.35
Focal length (mm): 28.84 37.76 67.90
F number: 2.91 2.91 2.91
Half angle of view (degree): 32.65 28.52 17.67
Image height (mm): 21.64 21.64 21.64
Lens length (mm): 145.96 132.92 114.12
Back focus (mm): 24.12 30.24 43.27
JPA 503156963_i_000008.jpg

Embodiment 4
Zoom ratio: 2.35
Focal length (mm): 28.84 38.11 67.90
F number: 2.91 2.91 2.91
Half angle of view (degree): 32.64 27.97 17.59
Image height (mm): 21.64 21.64 21.64
Lens length (mm): 158.97 140.28 124.83
Back focus (mm): 11.36 16.01 33.05
JPA 503156963_i_000010.jpg

Embodiment 5
Zoom ratio: 2.99
Focal length (mm): 28.84 36.43 86.18
F number: 2.91 3.50 5.60
Half angle of view (degree): 32.64 28.55 14.09
Image height (mm): 21.64 21.64 21.64
Lens length (mm): 156.45 143.53 123.40
Back focus (mm): 7.83 12.26 26.55
JPA 503156963_i_000012.jpg

For comment: hi-low@twitter
nice!(1) 
共通テーマ:趣味・カルチャー

この広告は前回の更新から一定期間経過したブログに表示されています。更新すると自動で解除されます。