Patents related to photo lenses

Started 6 months ago | Discussions thread
DaveR43 Senior Member • Posts: 1,486
Re: Nikon f/2.8-4 lens patents for FF, DX crop, 'Nikon 2' crop and CX crop

This document can be searched

http://www.freepatentsonline.com/y2020/0049963.html

This document has the images

http://www.freepatentsonline.com/20200049963.pdf

There are many designs, some with many examples.  A couple are f/2.8-4.5:

FF

24-70 f/2.8 – 4 FF (Example 19)

24-85 f/2.8 – 4 FF (Example 1)

24-85 f/2.8 – 4.5 FF (Example 13)

24-105 f/2.8 – 4 FF (Example 15)

DX Crop

16-50 f/2.8 – 4 DX Crop (Example 26)

16-55 f/2.8 – 4 DX Crop (Example 30)

16-60 f/2.8 – 4 DX Crop (Example 8)

16-60 f/2.8 – 4.5 DX Crop (Example 12)

16-70 f/2.8-4 DX Crop (Example 20)

‘Nikon 2’ Crop
(Ref Beatboxa, https://www.dpreview.com/forums/post/64133007 , https://www.dpreview.com/forums/post/61726415 )

12-42 f/2.8 – 4 ‘Nikon 2’ Crop (Example 33)

CX Crop

9-35 f/2.8 – 4 CX Crop (Example 35)

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DaveR

 DaveR43's gear list:DaveR43's gear list
Canon PowerShot G7 X Nikon D300S Nikon 1 V1 Nikon D600 Nikon AF-S Nikkor 24-120mm F4G ED VR +13 more
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