Information on Eastern Optical Company 11x14 lens

[Lachlan 717]

As you can see in the attached photo, it is a wide angle lens, made for 11x14 coverage. Seems to have 3 f-stops (f18, f32 and f64).

I can't find anything on it. Anyone know of this lens or its type/coverage/FL?

Thanks.

105276

[Mark Sawyer]

The Eastern Optical Company was a small optical company in Brooklyn, New York, that joined with Frederick Kollmorgen to form Kollmorgen Optical Company in 1916. See pages 20 and 21:

http://books.google.com/books?id=Ccx9OM7iph8C&printsec=frontcover&dq=Optical+Engineering+Fundamentals&hl=en&sa=X&ei=9n6SUvL6MI_loASgjYLYCw&ved=0CD0Q6AEwAA#v=onepage&q=Optical%20Engineering%20Fundamentals&f=false

I'd guess your lens is a copy of either as Protar Series V or the Wollensak Extra Wide Angle. But you'll have to check the coverage and focal length yourself!

[Lachlan 717]

The Eastern Optical Company was a small optical company in Brooklyn, New York, that joined with Frederick Kollmorgen to form Kollmorgen Optical Company in 1916.

http://books.google.com/books?id=Ccx9OM7iph8C&pg=PA20&lpg=PA20&dq=eastern+optical+kollmorgen&source=bl&ots=CodqnV-SEF&sig=azcLfo7Te0tMDTL0pkHmkWNHIFg&hl=en&sa=X&ei=m3ySUrqxF9DeoATk9ICwCg&ved=0CDcQ6AEwAQ#v=onepage&q=eastern%20optical%20kollmorgen&f=false

Thanks, Mark.

I was wondering whether this was a re-badged Protar (or similar, as I have little knowledge of lens design)?

[Mark Sawyer]

There were several designs it could be... Protar Series V, Wollensak's EWA (actually, they had two completely different designs, the f/9.5 and the f/12.5), or even a late Wide Angle Rectilinear. You may have to disassemble it to see...

[Lachlan 717]

The f18 might proclude this from being the Wolly EWA.