70-130mm F2 and 200-400mm F4 from TAMRON

TAMRON fied a patent containing 70-130mm F2 and 200-400mm F4.

【公開番号】特開2020-52338(P2020-52338A) click here
【公開日】令和2年4月2日(2020.4.2)
【発明の名称】ズームレンズ及び撮像装置

Embodiment 5: 200-400mm F4
f 203.875 290.974 388.046
Fno 4.120
ω 5.854 4.108 3.087
Y 21.633
TL 310.000
BF 34.952


Embodiment 6: 70-130mm F2
f 72.110 97.006 130.941
Fno 2.060
ω 16.823 12.307 9.071
Y 21.633
TL 205.680
BF 20.170

RF 85mm F1.8 and 100mm F2.8

CANON filed a patent of various optical formulas for RF85mm F1.8 and RF100mm F2.8.

【公開番号】特開2020-52118(P2020-52118A) click here
(43)【公開日】令和2年4月2日(2020.4.2)
(54)【発明の名称】光学系及びそれを有する撮像装置

Embodiment 1: RF85mm F1.8
Focal length: 84.05 mm
F number: 1.86
Half angle of view: 14.44
Image height: 21.64 mm
Lens length: 100.02 mm
Back focus: 14.64 mm


Embodiment 4: RF100mm F2.8
Focal length: 101.03 mm
F number: 2.88
Half angle of view: 12.09
Image height: 21.64 mm
Lens length: 130.45 mm
Back focus: 18.70 mm