Nikon Lens Patents

Started Sep 21, 2019 | Discussions thread
OP Dibyendu Majumdar Contributing Member • Posts: 758
Re: Nikon Lens Patents

bclaff wrote:

Dibyendu Majumdar wrote:

...

This looks like Tale 72 (which I think you wrongly identify as the AF-D lens).
I have this already as a different (perhaps identical) patent.

Nikon AI AF Micro-Nikkor 105mm f/2.8S

OK, yours looks like the AI-S that's not AF.
Looking for an authoritative diagram.

The AIS version and the AF-D version seem to be very similar.

https://www.kenrockwell.com/nikon/105mm-f28.htm - manual focus

The tale 72 is about the AF-D version.

I think the patents I list look correct at least visually and from inventor/timeline perspective.

Really?

Tale 72 specifically says "Tale 72 will cover the go-to lens for flower and other types of outdoor macro photography, the AI AF Micro-Nikkor 105mm f/2.8S."
It mentions the 2.8S 17 times and only mentions the 2.8D once near the end.

I am not sure I understand your point. There is no difference between AF and AF-D - both refer to the AF version of the lens - except for the distance chip. You can see from the pictures in the tale that it is not about the manual focus version.

The 2.8S was released in 1990 and the 2.8D in 1993.
The patent I have for the 2.8S was published in 1991.

You are talking about the AF version.

I list two patents.

First the manual AIS version that is still in production:

Micro-NIKKOR 105mm f/2.8 AIS US 4392724A Yoshinari Hamanishi 1981

Second the AF version that is referred to in tale 72.

AF-D Micro Nikkor 105mm f2.8 US 4986643A Keiji Moriyama 1988 Subject of Tale 72

Here is the scan of the manual lens.

Post (hide subjects) Posted by
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow