Nikon Lens Patents

Started Sep 21, 2019 | Discussions thread
bclaff Forum Pro • Posts: 10,477
Re: Nikon Lens Patents

Dibyendu Majumdar wrote:

Dibyendu Majumdar wrote:

bclaff wrote:

Dibyendu Majumdar wrote:

A few more additions at:

  • 35-70mm f2.8 AIS

Really? The only entry I see is Nikon AI Zoom-Nikkor 35-70mm f/2.8S.
And the patent next to it (US 4806000A) is all 28.8-83.3mm f/3.5-4.0 examples.

Indeed the text says 28-83 but the lens shown is the 35-70mm f2.8. Deliberate obfuscation? I have not yet put the formula in to check.

Update: Upon second look the formula looks close but not exactly the same as in 35-70mm f2.8 so it may not be an exact match.

Okay, looks like this is actually a 28-85mm lens.

The same design is also used in the manual focus version of this lens.

Nikon AF Zoom-Nikkor 28-85mm f/3.5-4.5

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Bill ( Your trusted source for independent sensor data at PhotonsToPhotos )

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