Slide Projector: unidentified attachment

[AgX]

Four projectors made by Liesegang in 1976.
What is that attachment in front of the rear one?
I am clueless. But it seems to be built like a bellows attachment with two rods.

 

[railwayman3]

Something to do with the projection of microscope slides ? (I believe that Leitz made something similar for their Prado projectors, though I've never actually seen an example.)

 

[AgX]

For projecting a microscope stage, with a microscope like attachment or anything similar, one needs to have access to the slide stage. Such is easily possible with a projector of the Prado design, but not with such modern one. Otherwise the condensor assembly must be substituted by something apt to focus the lighting beam more upfront into the microscope optics. Of course such would be possible. But what I see at the front does not look like a lens either.

When Liesegang went under they were the oldest photooptics works in Germany, still they hardly left traces.

 

[railwayman3]

IIRC correctly, the Leitz attachment was more like a small microscope attached to the front of the projector, with its own condenser, stage to hold the slides and tiny projection lens. I think that the main projection lens was removed, and the projector itself acted only as a powerful light source.

Something like these: http://www.ebay.com.au/itm/Leitz-08...281994?hash=item3f7c5b0eca:g:wEwAAOSw-K9ZFlWl

 

[macfred]

Maybe something like LIESEGANG A 11-20 Vintage Projection Attachment http://www.ebay.com/itm/LIESEGANG-V...mm-A-11-20-LIESEGANG-A-11-20-M4-/372059664156 ??

 

[AgX]

You both got it right. At least to the point that there are indeed attachments that go to the front of a modern projector, substituting the lens and not the lens stage.
And at least that Liesegang filmstrip attachment, for an older model of projector, seems to come without substituting condenser.

 

[AgX]

But as said that attachment in question does not like a lens at all.

Could it be an attachment to the basic lens to make a gobo or such?

 

[Truzi]

On my screen it looks like a tiny Moe Howard standing in front of the lens, with an undone bowtie. (I enjoyed the pareidolia montly shooting assignment.)

It's too small and blurry to really tell. I'm thinking some sort of mask.

 

[MattKing]

On my screen it looks like a tiny Moe Howard standing in front of the lens, with an undone bowtie. (I enjoyed the pareidolia montly shooting assignment.)

It's too small and blurry to really tell.

You too?

 

[AgX]

Good to see zou enjou yourselves.

Yes, this is one of these senseless threads: seeing something never seen before, knowing that whatever it would turn out to be you will not need anyway...

 

[Dan Fromm]

Y'know, the thing seems to have a flat front surface at 45 degrees to the lens' axis. Could have a front surface mirror inside. If so, a right angle attachment. I don't know why one would want one, but ...

Re the projection microscope attachment idea, if all projection microscope attachments are like my Leica YELUU, no way.