Leitz UV objectives - anybody else use them?

[jmc]

For my UV imaging work I usually use Ultrafluar objectives, but when I was looking for suitable objective lenses for my research, the first one I came across was actually a Leitz 16x UV objective. I started looking around and found 2 others - a 40x and 100x. Attached are what they look like.

These have good optical transmission in the UV - they show no drop in transmission between 280nm and 420nm like the Ultrafluar lenses.

I've not been able to find out much about these, and was wondering if anyone else has any or uses them?

The only reference I could find was in a 1985 Leitz catalogue, which shows 3 UV objectives with correct magnification, but the coverslip thickness is wrong (0,35mm on the objectives, and 0,17mm in the catalogue), so either these are not exactly the same, or the catalogue is not correct.