Does Anybody Recognize this Inverted 'Scope?

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GerryR
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Does Anybody Recognize this Inverted 'Scope?

#1 Post by GerryR » Thu Feb 08, 2024 10:16 pm

I came across this inverted microscope. It's made in China and only has the markings shown in the pictures. I would like to find a manual for it or something close to it in construction. Any ideas will be appreciated. Thanks in advance.
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Scarodactyl
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Re: Does Anybody Recognize this Inverted 'Scope?

#2 Post by Scarodactyl » Fri Feb 09, 2024 12:18 am

That looks like a Union Optical logo. Weird

PeteM
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Re: Does Anybody Recognize this Inverted 'Scope?

#3 Post by PeteM » Fri Feb 09, 2024 3:23 am

Gerry, It looks pretty straightforward and of decent construction. I'm not sure a Chinglish manual will add much to your understanding.

The exception to that would be if the objectives are phase contrast and the condenser annulli are missing -- and you hope to find something that matches. If so, you'd likely have to measure the size rings you need and try to find a match.

Are the engravings on the objective brightfield or phase? Are they the right matching long working distance types? 160mm finite?

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Re: Does Anybody Recognize this Inverted 'Scope?

#4 Post by zzffnn » Fri Feb 09, 2024 6:43 am

Gerry, I almost bought that one for DIY modifications :lol: if all parts work, then it is a good value (especially for its removable trinocular head, mechanical stage and DIY friendly condenser mount).

It looks decent for the price you paid.

Manufacturer (Jiangnan Yongxin / Novel) does not sell that model anymore:
jnoec.com/en/product.html

It has 4x, 10x and 20x inverted semi plan long barrel 160mm tube length objectives. 20x seems to be a phase model with NA of 0.4, though I could not see clearly.

The scope head looks similar to LOMO.

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Re: Does Anybody Recognize this Inverted 'Scope?

#5 Post by GerryR » Fri Feb 09, 2024 11:54 am

zzffnn wrote:
Fri Feb 09, 2024 6:43 am
Gerry, I almost bought that one for DIY modifications :lol: if all parts work, then it is a good value (especially for its removable trinocular head, mechanical stage and DIY friendly condenser mount).

It looks decent for the price you paid.

Manufacturer (Jiangnan Yongxin / Novel) does not sell that model anymore:
jnoec.com/en/product.html

It has 4x, 10x and 20x inverted semi plan long barrel 160mm tube length objectives. 20x seems to be a phase model with NA of 0.4, though I could not see clearly.

The scope head looks similar to LOMO.
I haven't received the unit yet; I expect it Monday or Tuesday next week. I was impressed with its build and it relatively nice construction. (I actually made an offer and was surprised when he accepted it and how fast he responded.) It looks like it is missing a slider, which I assume is for phase operation. That is really why I would like a manual for it, to see what it had for parts and accessories. I have downloaded a number of manuals from other manufacturers assuming they are similar in operation, but am more interested in components. Thank you all for your inputs; I'll update when I receive it.

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Re: Does Anybody Recognize this Inverted 'Scope?

#6 Post by Scoper » Fri Feb 09, 2024 8:16 pm

PeteM wrote:
Fri Feb 09, 2024 3:23 am
Gerry, It looks pretty straightforward and of decent construction. I'm not sure a Chinglish manual will add much to your understanding.

The exception to that would be if the objectives are phase contrast and the condenser annulli are missing -- and you hope to find something that matches. If so, you'd likely have to measure the size rings you need and try to find a match.

Are the engravings on the objective brightfield or phase? Are they the right matching long working distance types? 160mm finite?
Is there a chart that lists various manufacture’s ring sizes?

If so please list the link to it.

Thanks

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Re: Does Anybody Recognize this Inverted 'Scope?

#7 Post by PeteM » Fri Feb 09, 2024 9:58 pm

Scoper wrote:
Fri Feb 09, 2024 8:16 pm
Is there a chart that lists various manufacture’s ring sizes?

If so please list the link to it.

Thanks
Not that I'm aware of.

There's an eBay seller making laser-cut rings out of Delrin to fit various phase setups. He lists the dimensions of his sets. In my limited experience, they are often right but at least once wrong.

The simplest approach is to put a transparent rule (even laser or ink-jet printed) where the phase rings should be placed in the condenser and read directly what size rings the objectives will need. Then, make or buy what you need.

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Re: Does Anybody Recognize this Inverted 'Scope?

#8 Post by apochronaut » Fri Feb 09, 2024 10:42 pm

Your phase diaphragm goes on a slider. The simplest method is to cut a piece of hard transparent plastic the width and length of the slider and put some ruled marks on it to establish your diaphragm size quidelines. You can later cut another piece and black out all but the diaphragm ring.

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Re: Does Anybody Recognize this Inverted 'Scope?

#9 Post by apochronaut » Sat Feb 10, 2024 3:15 pm

That logo is very similar but not quite exact to the logo of NOIF. Ningbo Optical Instrument Factory, in Ningbo. The company goes back to the 1960's. Many such factories function under the Ministry of Engineering and Electronics Industry. Maybe there are similar logos scattered around China. China has thousands of microscope "factories", from small assembly facilities to specialized component fabricators to huge vertically integrated state of the art complete production plants. Some do engineering, some don't.
A few of the microscope types produced at Ningbo are/were a Laser Doppler Microscope, an Infrared Scanning Microscope and Modulation Contrast Microscope, their version of a Hoffman contrast microscope.

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Re: Does Anybody Recognize this Inverted 'Scope?

#10 Post by GerryR » Sun Feb 11, 2024 4:24 pm

Thanks for the inputs. Sorry for my delayed response, but Ive been"down-for-the-count" for the past couple of days, fighting off some weird disease; no such thing as a common cold anymore. I should have the 'scope in-hand today, but I'm not sure I wil feel up to diving into yet. No rush in any case; I have a lot of learning to do on this one.

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Re: Does Anybody Recognize this Inverted 'Scope?

#11 Post by GerryR » Tue Feb 13, 2024 11:54 pm

I received the unit, but unfortunately whoever packaged it had more faith in Fedex than I do. It was well wrapped in bubble wrap but unrestrained in the box and was left to bounce around. The binocular head was torn from its place, along with some other parts. I was able to repair the head and reposition the objective turret, but this is going to be a longer term project than I anticipated. It does look worth fixing though, so I'll be at it and keep you posted as to my progress.

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Re: Does Anybody Recognize this Inverted 'Scope?

#12 Post by apochronaut » Wed Feb 14, 2024 1:56 am

Long ago, I have taken to giving packers instructions on how to pack a microscope. most don't mind but I have been chewed out for thinking they are stupid.no, they just need to know how to pack a microscope if they are shipping one., some have thanked me. it potentially can save a mess.
i hope your damage wasn't too bad. that looks like one that might be hard to track parts down for.

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Re: Does Anybody Recognize this Inverted 'Scope?

#13 Post by GerryR » Fri Feb 16, 2024 1:35 am

Working at it slowly. It is cleaning up pretty well. The objctives are as follows: PH 1 SP4/0.1 160/-; PH SP10/0.25 160/-; PH SPL25/0.40 160/1.00 (Can someone explain the difference between PH1/PH and SP/SPL? Also, 160/- (the meaning of the -) I assume the 160/1.00 is for 1mm glass thickness (?). I have the binocular head to do; then come the real questions. ;)

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Re: Does Anybody Recognize this Inverted 'Scope?

#14 Post by apochronaut » Fri Feb 16, 2024 1:45 am

- is used on objectives that work equally well with or without a cover . It is seen on objectives with N.A.s below .40. A cover glass spec. of 1.0 is pretty ideal for using slides or well slides, where an inverted sees through the slide as though it is a cover.
Ph 1 usually denotes the specific condenser diaphragm used. Some phase instruments use the same diaphragm for more than one objective.
SP and SPL usually both mean the same thing and various mfg. have their own codes. Without a manual it becomes a bit of a guessing game. The L added on to SP could indicate Semi Plan Long working distance in this case, though.

GerryR
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Re: Does Anybody Recognize this Inverted 'Scope?

#15 Post by GerryR » Fri Feb 16, 2024 12:43 pm

Thanks for the clarifacation,Phil. (Did you get my PM on the 1036A illuminator. If not, please visit that subject, as I posted there what I had sent you. I'm having trouble on this website. It will not keep me logged in and it doesn't always semd PM's.) Thanks, again.

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Re: Does Anybody Recognize this Inverted 'Scope?

#16 Post by Macro_Cosmos » Tue Feb 20, 2024 2:30 am

The logo says 上海 which means Shanghai, likely it came from one of the three or four state-run optics enterprises back in the days. It does not indicate which factory, but perhaps a nameplate at the back would say something like 上海光學三廠 (Shanghai optics Co 3rd factory), indicating its origin.

I own a refractometer made by Shanghai Optics Co.
Image
(Speaking of that, I think I will never get around to restoring my PLA field microscope...)

The true origin could be different as well. Someone I know got hold of a "LOMO" microscope that was designed for an ex-state-owned metallurgy lab, it had the serial of literally the number "1". He told me this cannot be LOMO because the mechanics were superb, something LOMO and their unrationed Soviet tank grease was not known for. He stripped the stickers and the scope was revealed to be a Zeiss that was painted over. The objectives were all Zeiss with an extra shell. I bet the revolutionary brothers over at Stalingrad made a nice capitalist white label gain from that bucket of green paint. I wonder how they smuggled that Zeiss in.

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Re: Does Anybody Recognize this Inverted 'Scope?

#17 Post by apochronaut » Fri Feb 23, 2024 5:35 am

These might be the sliders for your microscope.

https://www.ebay.ca/itm/264270038071?it ... BMsLr-xrpj

https://www.ebay.ca/itm/264270038078?it ... BM-rWWx7pj

Silo often will take an offer of half or even less if the item has been sitting for awhile.
Just ignore that shipping price. The link I sent is for Canada.

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