Wider than GRIII [Patent]
RICOH filed a patent of several candidates for the GRIII optical system containing 15.7mm F3.27.
【公開番号】特開2019-79033(P2019-79033A) click here
【公開日】令和1年5月23日(2019.5.23)
【発明の名称】結像光学系、撮像装置および携帯情報端末装置
Specification and lens arrangement of embodiment 7
Focal length: 15.70 mm
Ｆ: 3.27
ω: 42.3
Image height: 14.2 mm
【公開番号】特開2019-79033(P2019-79033A) click here
【公開日】令和1年5月23日(2019.5.23)
【発明の名称】結像光学系、撮像装置および携帯情報端末装置
Specification and lens arrangement of embodiment 7
Focal length: 15.70 mm
Ｆ: 3.27
ω: 42.3
Image height: 14.2 mm
With all 8 examples in the patent request having 6 elements in 4 groups (including 2 aspherical lens elements) and examples 4 and 5 being 18.28mm / 18.29mm f/2.87 lenses, this patent request looks very much like the one pertaining to the new lens in Ricoh GR III, which is a 18.3mm f/2.8 having 6 elements in 4 groups, including 2 aspherical lens elements。
by Mistral75 (2019-05-25 08:31)
Dear Mistral75
Thank you for the information!
The aberration charts in the patent application show that all lenses have a high-performance. Thus it is difficult for me to select one for the product。
by hi-low (2019-05-26 19:45)