When did coating of large format lenses begin?

[DeKlari]

I've seen CZJ Tessar coated lens from January 1939 (before CZJ patent published in Dec 1939)
https://www.flickr.com/photos/126027...posted-public/

[Jim Noel]

Somewhere I have an article on "invisible Glass" which discussed the light transmission of coated lenses. I don't remember the date, but it was written much earlier than any date mentioned so far. I will undergo a search for it and then report back.

[DeKlari]

Sure it was much earlier idea. I guess, most people wondering when it become available for public.

[noface0711]

I have some US Navy binoculars from 1943 that are coated, and a rolleiflex from the late 40's that is coated. I'm sure there can be found a few lenses from the 30's but WWII brought us large scale coating.