85mm F1.4, 35mm F1.8 and 35mm F2.4 for 35mm full-frame DSLR from TAMRON

TAMRON filed a patent containing 85mm F1.4 and 35mm F2.4 for 35mm full-frame DSLR.

【公開番号】特開2019-109539(P2019-109539A) click here
【公開日】令和1年7月4日(2019.7.4)
【発明の名称】光学系及び撮像装置

Specification and lens arrangement of embodiment 1
Focal length: 87.5187 mm
FNo.: 1.4578
ω: 13.8585


Specification and lens arrangement of embodiment 4
Focal length: 35.3524 mm
FNo.: 1.8354
ω: 31.7450


Specification and lens arrangement of embodiment 6
Focal length: 35.8750 mm
FNo.: 2.3779
ω: 31.8711

コメント 2

Hi there,

Thank you for your work. This appears to be the patent of the Tamron SP 35mm f/1.8 Di VC USD, just compare example 4 in the patent request:

https://www.j-platpat.inpit.go.jp/gazette_work/domestic/A/501109000/501109500/501109530/501109539/A5C16B078B89E416150EC7C49B82CC704E6162A00D76BA911BAE52B9C3DB49B2/text/JPA%20501109539_i_000023.jpg

with the optical formula of the Tamron SP lens:

https://www.lenstip.com/upload2/146932_nbigmini_tam35_f.jpg

Kind regards,
Mistral75。
by Mistral75 (2019-07-07 19:27) 

Hi Mistral75,

Thanks for your suggestions。
I agree with you!

by hi-low (2019-07-25 22:32)