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Other Vintage Household Electrical or Electromechanical Items For discussions about other vintage (over 25 years old) electrical and electromechanical household items. See the sticky thread for details. |
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17th Apr 2020, 9:59 pm | #1 |
Hexode
Join Date: Jun 2005
Location: Buntingford, Hertfordshire, UK.
Posts: 362
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Quad lens - what's it for?
Hi all,
Bit of an oddball item and not exactly electrical, but can anyone tell me if this lens is from anything potentially important? I'm assuming its missing 1 lens assembly! more pics available if required. Very best in these difficult times, Chris
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17th Apr 2020, 10:01 pm | #2 |
Dekatron
Join Date: May 2010
Location: Greater Manchester, UK.
Posts: 18,675
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Re: Quad lens - what's it for?
I would hazard a guess it's from a microscope.
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17th Apr 2020, 10:05 pm | #3 |
Nonode
Join Date: Jun 2016
Location: Bognor Regis, West Sussex, UK.
Posts: 2,287
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Re: Quad lens - what's it for?
Or the lens turret from an old 8mm cine camera
Peter |
17th Apr 2020, 10:31 pm | #4 |
Hexode
Join Date: Jun 2005
Location: Buntingford, Hertfordshire, UK.
Posts: 362
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Re: Quad lens - what's it for?
Thanks Chaps,
Obviously not much use unless you have the rest of it, but does anyone have it? Very Best
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BVWS, VMARS, RSGB, DEHS, RAOTA Nothings too big or too heavy, otherwise it wouldn't be where it is! |
18th Apr 2020, 10:26 am | #5 |
Pentode
Join Date: Nov 2011
Location: Wigan, Greater Manchester, UK.
Posts: 147
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Re: Quad lens - what's it for?
It does look like a lens from an old 8mm cine camera, probably 1950's or 1960's vintage.
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18th Apr 2020, 7:26 pm | #6 |
Nonode
Join Date: Jan 2016
Location: Stafford, Staffs. UK.
Posts: 2,529
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Re: Quad lens - what's it for?
From the white crackle finish, my feeling is a microscope, too. I'd have expected cine cameras to be more grey.
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18th Apr 2020, 7:31 pm | #7 |
Moderator
Join Date: Mar 2012
Location: Fife, Scotland, UK.
Posts: 22,799
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Re: Quad lens - what's it for?
Cine cameras, getting used outside, would likely have had lens hoods. Microscopes don't need them.
David
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18th Apr 2020, 8:03 pm | #8 |
Hexode
Join Date: Oct 2014
Location: Wiltshire, UK.
Posts: 378
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Re: Quad lens - what's it for?
Don't microscopes normally have the rotating plate at an angle to the main barrel and the individual objectives splayed outwards to give better clearance for the unused objective lenses away from the slide? This wouldn't apply if you only had very low magnification objectives with relatively large working distances.
I have a vague memory that you could get security cameras with multiple images on a single camera including simultaneous telephoto and wide angle of the same scene. Roger |
18th Apr 2020, 8:33 pm | #9 |
Dekatron
Join Date: Jan 2012
Location: Brentwood, Essex, UK.
Posts: 5,316
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Re: Quad lens - what's it for?
I would expect camera lenses to have adjustable aperture and focus, unless they were supplementary wide angle /telephoto adaptors. I don't recall cine camera turrets with more than three positions.
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19th Apr 2020, 12:59 am | #10 |
Dekatron
Join Date: Nov 2003
Location: Heckmondwike, West Yorkshire, UK.
Posts: 9,637
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Re: Quad lens - what's it for?
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19th Apr 2020, 10:23 am | #11 |
Heptode
Join Date: Mar 2008
Location: Camberley, Surrey, UK.
Posts: 800
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Re: Quad lens - what's it for?
My first thoughts were " TV Camera Turret" but on closer examination, I don't recognise it! and its not very big. Looking at the perforated metal for scale the lenses are small.
Perhaps it is part of some photo beam detector where the leases are selected for distance. As was said more pictures might help? |
19th Apr 2020, 12:19 pm | #12 |
Nonode
Join Date: Jan 2016
Location: Stafford, Staffs. UK.
Posts: 2,529
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Re: Quad lens - what's it for?
If not a microscope, pehaps some other instrument that needs variable magnification / focal length? How about something like a thermal camera?
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19th Apr 2020, 1:06 pm | #13 |
Guest
Posts: n/a
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Re: Quad lens - what's it for?
I bet it is from a low power (5x to 40x as a guess) inspection microscope, the empty hole for minimum magnification.
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19th Apr 2020, 1:07 pm | #14 |
Nonode
Join Date: Jun 2016
Location: Bognor Regis, West Sussex, UK.
Posts: 2,287
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Re: Quad lens - what's it for?
My money is still on an 8mm cine camera lens.
One question however, are we looking at the front or back? More pictures would be helpful. Peter |
19th Apr 2020, 2:15 pm | #15 |
Nonode
Join Date: Oct 2010
Location: Gloucester, Glos. UK.
Posts: 2,149
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Re: Quad lens - what's it for?
It could be off a Vintage Avant Quad lens Polaroid 100 camera ,or something similar.
Looks a bit like this https://www.worthpoint.com/worthoped...mm-6-524646935
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19th Apr 2020, 3:17 pm | #16 |
Guest
Posts: n/a
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Re: Quad lens - what's it for?
Not pretty enough for a consumer camera, no focus, no iris (f stop) and the lens curvatures look far to small for any large image (like a Polaroid). The cream flecked finish is tops for microscopes too.
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19th Apr 2020, 3:23 pm | #17 |
Guest
Posts: n/a
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Re: Quad lens - what's it for?
The Quad Polaroid also has two pairs of lenses, not three (four if you include the blank one) different ones as in the object under discussion. Two for a wide view and two for closeup. They took front and profile views at the same time, it was all done by mirrors (well one mirror).
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19th Apr 2020, 4:49 pm | #18 |
Hexode
Join Date: Jun 2005
Location: Buntingford, Hertfordshire, UK.
Posts: 362
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Re: Quad lens - what's it for?
Hi All,
More pics.
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BVWS, VMARS, RSGB, DEHS, RAOTA Nothings too big or too heavy, otherwise it wouldn't be where it is! |
19th Apr 2020, 5:18 pm | #19 |
Dekatron
Join Date: Feb 2007
Location: Leominster, Herefordshire, UK.
Posts: 16,526
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Re: Quad lens - what's it for?
The numbers (magnification?) suggest a missing lens. The most interesting one (highest magnification?).
Why 6 and 6.5 I wonder? The inspection 'scope idea sounds promising.
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19th Apr 2020, 5:30 pm | #20 |
Moderator
Join Date: Mar 2012
Location: Fife, Scotland, UK.
Posts: 22,799
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Re: Quad lens - what's it for?
The numbers around the grip ring look more like magnification factors than the focal lengths you'd expect on a camera. Also the empty hole gets 17.5 which may be the factor for the rest of the 'scope.
My stereo microscope here on the bench needs twin lenses for every mag factor, of course, so the turret is arranged as a barrel with the light path radially through it. Each lens set gets used forwards and backwards, giving two different magnifications, though the empty position causes the same factor to appear in two places on the turret knobs. This looks like a lens turret from a mono microscope. The advantage of fixed lenses over zooms is that they can be accurately calibrated to use with measuring graticule eyepieces. David
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