Quarz LF lenses?

[Dr Klaus Schmitt]

Has anyone heard about LF lenses made of quartz? I heard rumours about that (not the Gotar, that is a myth btw.), but would like to learn about that...

Thanks,

Klaus

[Bruce Watson]

Has anyone heard about LF lenses made of quartz? I heard rumours about that (not the Gotar, that is a myth btw.), but would like to learn about that...

I seem to recall reading something in the fuzzy past about quartz in photographic lenses. Something about extended ultraviolet response maybe?

[Dr Klaus Schmitt]

Thanks Bruce,

this is actually what I would like to find out, if there has been photography in the ultraviolet domain once...

Klaus

[Marko]

Hi Klaus,

Perhaps you'll find some of these links interesting:

http://www.sciencephoto.com/html_tec...ve/ultrav.html

http://www.rit.edu/~andpph/text-infr...traviolet.html

http://www.naturfotograf.com/uvstart.html

Marko

[Dr Klaus Schmitt]

Thanks Marko,

these sources actually also led to my question. I'm more interested in the historical aspect of UV photography. What currently is and can be done is known to me.

Klaus

[Ed Richards]

There has been some quartz stuff done for the military. As I understand it, this is more often done with mirror lenses than conventional lenses. Mostly they are interested in telephoto so they can keep better watch on us.:-)

[Dr Klaus Schmitt]

Thanks Ed,

I know some catoptric (mirror only) lenses which perform 200....14.000nm actually (UV to deep IR) wit Zeiss Zerodur front surface mirrors and special UV enhanced coating, but of not much use actually (I have those).

[Ole Tjugen]

I came across an old recommendation to use thin lenses with few elements for UV photography; a 100 years old book recommended using nothing more complex than a Periskop.

[Ed Richards]

Are you interested in collecting them or having one built? There are custom optics firms that can do quartz, again, they usually work for military and industrial contractors.

[Dr Klaus Schmitt]

Are you interested in collecting them or having one built? There are custom optics firms that can do quartz, again, they usually work for military and industrial contractors.

Ed,

I use them. Having one made is a $$$$$ job, so not really an option. I know some companies which do that (in the US and in Europe).

Thanks!