Technical infos on projection lenses

[Aspera]

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Dear friends:

 

hello everybody as this is my first contribution to the Forum!

 

For a brief while, I have been collecting projection lenses - including but not limited to Leitz lenses. Unfortunately, I have not been able to find much information on the optical design even of the most common lenses such as the Hektor or the Elmaron. Apparently there are not really any web-availabe resources, aren't there?

 

Finally, I dissected a fungus-affected Hektor. So I have a certain idea now of which shapes the included lenses are in this case (see http://www.l-camera-forum.com/leica-wiki.de/index.php/Bild:SCHEMA_H.jpg). But not being an optics expert, this is not much help without further explanation.

 

I'd appreciate any hint - also to printed material.

 

Best regrads, jan