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stawastawa
15-Aug-2016, 09:23
I have this condenser lens, don't know what it is from.

But I thought it would be fun to think up a few ideas of what could be done with it.

https://c2.staticflickr.com/8/7510/28386298873_2dc95b81a1_z.jpg (https://flic.kr/p/KfpcG6)

https://c4.staticflickr.com/9/8694/28386298843_160afa5386_z.jpg (https://flic.kr/p/KfpcFz)

https://c7.staticflickr.com/9/8805/28383792614_31b93546c6_z.jpg (https://flic.kr/p/KfbmEJ)

LF camera? Telescope? periscope?

I'll try and get some details on the lens's parameters sometime (just moved though so have to go digging again). wish I had measured the distance to that bolt on the wheel barrow...

https://c7.staticflickr.com/9/8895/28383792734_2f12e08728_z.jpg (https://flic.kr/p/KfbmGN)

~n

Luis-F-S
15-Aug-2016, 09:25
Paperweight?

Jim Jones
15-Aug-2016, 10:45
It looks more like a telescope objective than a condenser lens. What are its focal length and diameter? Does it consist of two or more elements, either air spaced or cemented together?

Peter Gomena
15-Aug-2016, 10:55
Careful where you leave it, you might start a fire if the sun hits it at the right angle!

Jac@stafford.net
15-Aug-2016, 11:58
Can it burn ants?

David Lobato
15-Aug-2016, 17:11
It may be a good light intensifier with artificial lighting. It might be fun to experiment with its effects on a light source. That was its original purpose, now just add a few twists of creativity. Try shining light into one side, then the other to see what difference there is. If you happen upon something interesting, post pictures for us.

LabRat
15-Aug-2016, 17:35
I have also used these for a intense backlight for an even light stage for duping film or macro work... Try getting an even light out of these, testing with a single LED bright flashlight...

Steve K

stawastawa
15-Aug-2016, 23:45
thanks dave and Steve those sound like fun investigations!