Obscure lens identification needed

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dorcasmallorcus

dorcasmallorcus

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Hi there, can somebody help me identify what these two lenses are for?

View media item 106954
View media item 106953

One of them has a focusing ring, but the other has no focusing ring.

I don't believe they can be screwed onto other lenses nor onto each other.

No body markings save for a few digits visible on one of them, but not even any letters.
 
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Projector lenses maybe.
 
I'm going with the projector lens idea.
The not focus ring one may be a condenser lens.
 
They look like old photocopier lenses from the 80's 90's
If so they would be noted for a very flat field and little distortion rather than great sharpness.
 
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Thank you all for your replies. I am tempted to go with projector lenses though l do wonder if a big departmental photocopier (now that Terry mentions it) might have a similar lens assembly, with one focusing lens, one condenser, to project the image onto photocopier paper. So anyway, the disappointment is on a par with the time l found the handle from a glass teacup in the playground and thought it was a diamond. Might make good telescope material though. The zoomable lens has multiple elements, but behaves like just one objective lens, similar light path, focusing to a point, giving an inverted image, magnified by about 2x
 
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dorcasmallorcus said:
Thank you all for your replies. I am tempted to go with projector lenses though l do wonder if a big departmental photocopier (now that Terry mentions it) might have a similar lens assembly, with one focusing lens, one condenser, to project the image onto photocopier paper. So anyway, the disappointment is on a par with the time l found the handle from a glass teacup in the playground and thought it was a diamond. Might make good telescope material though. The zoomable lens has multiple elements, but behaves like just one objective lens, similar light path, focusing to a point, giving an inverted image, magnified by about 2x
Click to expand...

No idea about the lens shown but during the 70's the photocopier we had in the hospital department where I worked was huge compared to the modern ones.........about the size of 4 or 5 off three drawer filing cabinets and it could only copy A4 ! As I recall rather than a flat bed for the prime documents it was slightly curved and the lid to hold it in place was like heavy weight rubber. So, the mechanism must have quite some moving parts in it with optics to match :)
 
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