The Tamron 90mm f/2.8 was first spotted here, but asobinet is reporting a more updated filing that was applied for April 16th, 2020, and published October 28, 2021. It’s increasingly looking like this lens is real and coming with a compact design that will suit mirrorless cameras well.
- Focal length: 88.500
- F value: 2.9200
- Half angle of view: 13.3561
- Image height: 21633
- Overall length: 91.192
- Back focus: 33.0167
Overview
- [Publication Number] Japanese Patent Application Laid-Open No. 2021-170078 (P2021-170078A)
- [Publication date] October 28, 2021
- [Title of the invention] An image pickup lens and an image pickup device.
- [Application date] April 16, 2020
- [Applicant]
[Identification number] 000133227
[Name or name] Tamron Co., Ltd. - PROBLEM TO BE SOLVED: To provide an image pickup lens and an image pickup device having high optical performance while aiming at miniaturization and cost reduction in an image pickup lens capable of taking an image in close proximity to a subject.
- [0002]
Conventionally, an image pickup device using various solid-state image pickup elements such as a video camera, a digital still camera, a single-lens reflex camera, and a mirrorless single-lens camera has become widespread. With the progress of miniaturization of these image pickup devices, further miniaturization of the image pickup lens (optical system) is required, and macro lenses are no exception. The macro lens generally refers to an image pickup lens having a maximum image pickup magnification of 0.5 to 1 times, and some have a maximum image pickup magnification of 1 time or more. The macro lens has a shorter shortest imaging distance than other lenses such as a zoom lens, and can image images from infinity to short-distance subjects, and can express an imaging expression different from that of other lenses. - [0007]
However, in the image pickup lens disclosed in Patent Document 1, since the refractive power of the first lens group for focusing is weak, the amount of movement during focusing is large with respect to the optical total length, which is not sufficient in terms of miniaturization. .. Further, the maximum image pickup magnification of the image pickup lens is 0.5 times, and a macro lens having a higher maximum image pickup magnification is required. - [0009]
Further, in these image pickup lenses, in addition to high performance and miniaturization, it is also required to reduce the cost.
Therefore, an object of the present invention is to provide an image pickup lens and an image pickup device having high optical performance while reducing the size and cost of an image pickup lens capable of taking an image in close proximity to a subject.
via asobinet
