Patents related to photo lenses

Started 6 months ago | Discussions thread
OP Dibyendu Majumdar Contributing Member • Posts: 758
Re: Leitz 800mm f6.3

bclaff wrote:

Dibyendu Majumdar wrote:

I think this one is for the Leica 800mm f6.3 which was one of the earliest 35mm lenses to feature ED like glass.

https://patents.google.com/patent/US3536379A/en

FWIW, the patent specifies f/5.9 but they certain could have reduced the element sizes slight for f/6.3

Play with it here . You can change 01 to 01U to see the unscaled version.

Nice - the link may be incorrect?

I am attaching some info that might help fine tune:

Alsop this link:

https://www.l-camera-forum.com/leica-wiki.en/index.php/800mm_f/6.3_Telyt-S

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