Wearable magnifying glasses for soldering? - Page 1
Forum section: electronics / general

author: e100
author_rank: Frequent Contributor
timestamp: September 12, 2019, 08:07:51 am
content: I'm getting older and wear glasses for reading and distance. Todays fine pitch devices are a real challenge even to do a visual inspection, let alone soldering.I've used a desk magnifying glass but that isn't very mobile.What are people's experiences with the wearable magnifying glasses that are typically advertised for jeweler/watch repair applications? There appear to be a range of designs. What features are important. I need something that still allows me to wear my glasses underneath.

author: pisoiu
author_rank: Regular Contributor
timestamp: September 12, 2019, 08:39:24 am
content: I use something like this:https://www.aliexpress.com/item/33003148364.html?spm=a2g0o.productlist.0.0.5888270bO0m2LQ&algo_pvid=89483409-0381-48e1-a1c1-edb826f8ec71&algo_expid=89483409-0381-48e1-a1c1-edb826f8ec71-0&btsid=92d30a84-4d0b-444a-83e2-bac9e4a9eb2d&ws_ab_test=searchweb0_0,searchweb201602_1,searchweb201603_53They're ok from optical point of view but cheaper versions have some mechanical problems which makes initial adjusting a bit more difficult.

author: e100
author_rank: Frequent Contributor
timestamp: September 12, 2019, 11:36:48 am
content: Quote from: pisoiu on September 12, 2019, 08:39:24 amHow heavy are these?I see there is a clip on version for normal glasses. Is that what you have?

author: DTJ
author_rank: Super Contributor
timestamp: September 12, 2019, 12:47:19 pm
content: I bought some magnifying dental spectacles. They are reasonable quality and create a good image. I think they cost me about $60.I could not use them for soldering or even inspection work. I think it is because a small movement of your head results in visual feedback that my brain cannot process. I found I could not get the positioning of the soldering iron or solder right either.I ended up buying a Amscope binocular zoom microscope. It was a great decision.I got one with a continuously adjustable zoom (7 x t0 40x from memory). I use it for all soldering and inspection as well as lots of other tasks.I'd be lost without it. With a 0.5x barlow lens fitted I have about 130mm of working space under the lens and a good wide viewing field.Try to get one secondhand off your gumtree or classified website.

author: SMTech
author_rank: Frequent Contributor
timestamp: September 12, 2019, 12:51:35 pm
content: I once gave the more basic visor style types ago, but I think they just introduce a new problem, now you can see but eye strain will increase and it also takes a while get used to using them as they are messing with your DOF etc. A better but more expensive solution is to use a digital microscope/inspection camera with a decent refresh rate, there's a whole bunch of them on aliexpress with Sony sensors and some decent lenses that cost a fair bit less than something like a Tagarno

author: Psi
author_rank: Super Contributor
timestamp: September 12, 2019, 12:52:16 pm
content: +1 for stereo microscope and 0.5 barlow lenshttps://www.aliexpress.com/item/32661218238.htmli've used LuckyZoom before, they're a good aliexpress sellerWhen you say mobile, how mobile does it need to be?You can pickup and move a microscope around more than a desk magnifying lamp that's fixed to the table.

author: amspire
author_rank: Super Contributor
timestamp: September 12, 2019, 01:06:55 pm
content: Quote from: Psi on September 12, 2019, 12:52:16 pmMy microscope is a Lucky Zoom one and it is really excellent. Very clear, and when set up right, the focus remains sharp over the zoom range.The stand in this sale is not quite high enough for my liking, and a big part of the costs of bigger stands is the shipping weight.A longer tube for the focusing arm is not expensive. You can get a longer tube and mount it on a wooden base. When you want the microscope to overhang something, rotate the base to the rear of the microscope and put a weight on it.

author: amspire
author_rank: Super Contributor
timestamp: September 12, 2019, 01:10:39 pm
content: Quote from: Psi on September 12, 2019, 12:52:16 pmExactly what I do. You can pick up this kind of stand with one hand very easily. I do not like the massive microscope stands.

author: Martin Hodge
author_rank: Unknown
timestamp: September 12, 2019, 01:12:58 pm
content: You want the OptiVISOR. It goes on over your glasses, doesn't attach to them.

author: pisoiu
author_rank: Regular Contributor
timestamp: September 12, 2019, 01:17:42 pm
content: Quote from: e100 on September 12, 2019, 11:36:48 amA bit heavy but if you don't use them all day long, that's not a problem (at least for me). Also, they may slip a bit from time to time due to head movements, sweating, etc. Mine came exactly as in the pictures, with plastic frames and lenses, not attachable to existing glasses.As stated somewhere above, you need to get used to them, a small head movement translates into huge fov movement. Besides steady hands you also need steady neck

author: asmi
author_rank: Super Contributor
timestamp: September 12, 2019, 01:20:04 pm
content: I tried several different head-mounted magnifiers, but they all were not very practical as they limit the depth of view, and so I had to raise and lower them all the time. Stereo microscope is the ultimate tool for me now - it's good for placing even super-tiny 0201 parts, and at the same time it's great for post-reflow and post-soldering inspection (as I can easily change magnification by changing eyepieces from x10 to x20), and it's relatively cheap (150 USD + shipping).

author: nigelwright7557
author_rank: Frequent Contributor
timestamp: September 12, 2019, 01:21:56 pm
content: I use 2.5 mag reading glasses for basic viewing.For getting up real close just a hand held 10x magnifier.

author: SMTech
author_rank: Frequent Contributor
timestamp: September 12, 2019, 02:34:04 pm
content: That is the simplest option isn't it, cheap and nasty clip on illuminated magnifier, popular with "crafting" cross stitch types.

author: thinkfat
author_rank: Unknown
timestamp: September 12, 2019, 02:35:57 pm
content: Quote from: nigelwright7557 on September 12, 2019, 01:21:56 pmYep, the kind you get at the drugstore for cheap works just fine for soldering. For really fine work I use a stereo microscope. But for basic soldering, reading glasses are just fine.Gesendet von meinem Nokia 6.1 mit Tapatalk

author: e100
author_rank: Frequent Contributor
timestamp: September 12, 2019, 02:54:26 pm
content: I have a stereo microscope that is collecting dust. It has 10x eyepieces and 2x objective but the field of view is so narrow that you spend half the time trying to figure out where the soldering iron is. I bought a pair of 5x eyepieces thinking that would solve the problem, so yes the magnification was less, but the field of view was also less!I didn't know about reduction barlow lenses until they were mentioned in this thread.

author: e100
author_rank: Frequent Contributor
timestamp: September 12, 2019, 03:02:35 pm
content: Quote from: DTJ on September 12, 2019, 12:47:19 pmYes, I've used a zoom microscope in the past. It makes it so much easier to navigate around a large board, see the relative position of the soldering iron and have everything in focus. Once you're in the right location you can zoom in to do the actual soldering.

author: rea5245
author_rank: Frequent Contributor
timestamp: September 12, 2019, 03:08:53 pm
content: Quote from: DTJ on September 12, 2019, 12:47:19 pmSince it's a binocular scope, don't you need two barlow lenses?There are zoom scopes starting at 3.5x available. Would that eliminate the need for barlows?- Bob

author: amspire
author_rank: Super Contributor
timestamp: September 12, 2019, 03:23:04 pm
content: Quote from: rea5245 on September 12, 2019, 03:08:53 pmNo. It is just a single large diameter barlow lens just below the two stereo objective lenses.

author: jfiresto
author_rank: Frequent Contributor
timestamp: September 12, 2019, 03:33:07 pm
content: Quote from: rea5245 on September 12, 2019, 03:08:53 pmOne is enough, even on the Greenough-design microscopes you are probably thinking of. You just make the "barlow" lens large enough so that both optical paths pass through the lens: one left of center, the other right of center.The other type of stereo microscope does that even higher up the microscope. It has a single, large main objective and passes both the left and right optical paths through it. Such "Common Main Objective" (CMO) microscopes can give brighter, sharper images and are more flexible, but suffer greater lateral chromatic aberration (color fringing) because the paths pass through the less well corrected sides of the lens. CMO microscopes are also more expensive.

author: nigelwright7557
author_rank: Frequent Contributor
timestamp: September 26, 2019, 08:13:45 pm
content: Quote from: thinkfat on September 12, 2019, 02:35:57 pmIts the fine SMD 0.5mm micro's I have trouble with.Even if it looks good under magnifier there can sometimes be a short behind a pin.What I do is when I design the pcb is put a row of vias next to the micro so I can buzz between adjacent pins.Spent half an hour trying to remove a short on an A2D converter only to find they were connected on pcb anyway ! doh !For fine scale SMD I stick it down with solder paste first to help stop it floating around.I then solder tack it and check it hasn't moved.Then apply big blob of solder to iron tip and slowly run it along pins making sure every one gets solder.Quite often there are blobs of solder so I remove them with copper braid.A final buzz with the DMM and all is well.

author: NorthGuy
author_rank: Super Contributor
timestamp: September 27, 2019, 01:49:49 pm
content: +6 reading glasses still work for me when soldering (compare to my normal +2 for reading). You just need to remember to take them off once you're done, or you may get disoriented. For some reason, they don't sell them in Canada (+3.5 is the best I could find). I had to order mine from eBay.

author: tggzzz
author_rank: Super Contributor
timestamp: September 27, 2019, 02:28:52 pm
content: Quote from: e100 on September 12, 2019, 08:07:51 amA solution that works for one person may not work for another; it is highly personal. That suggests starting with flexible simple cheap solutions.With one exception, I find stereo microscopes impossible to use, even though I've been taking stereoscopic pictures for 35 years. There's the added complexity of ensuring nothing gets deposited on the lens.My preferred solution is a cheap head-mounted visor with multiple lenses. They aren't heavy, can be used with spectacles, can be used for other things (e.g. peering into equipment), have 1.2/1.8/2.5/3.5 magnification lenses and you can put two lenses "in series". The LED is not much use.Example, but they are widely available under different brands:https://www.amazon.co.uk/Rolson-60390-Loupe-Magnifier-Visor/dp/B001MJ0JW2

author: asmi
author_rank: Super Contributor
timestamp: September 27, 2019, 05:08:51 pm
content: Quote from: tggzzz on September 27, 2019, 02:28:52 pmAmScope SE400 microscope has a working distance of over 200 mm! This is more than enough for just about any work I can think of. Infact this was too much for me, so I had to return it and get SE410 instead with lower distance of about 150 mm.

author: jmelson
author_rank: Super Contributor
timestamp: September 27, 2019, 07:53:41 pm
content: Quote from: e100 on September 12, 2019, 02:54:26 pmWell, they are all different. But, I have used 3 different stereo zoom microscopes, and they all had a decent field of view. One trick is to use them without eyeglasses, if you normally use them. Getting your eyes closer to the eyepieces expands the field of view a lot. The biggest requirement, though, is "working distance". If the distance from objective lens to object is 20 mm, there's NO WAY you can do soldering with it. Inspection, yes, but soldering no. The units I've used all have something around 100 mm working distance or better. That is enough room to get your hands and a soldering iron under it.As for the soldering iron, you need to know where it is by feel, to avoid burns. This is something you learn by experience, to know if you hold your hand like THIS, then you KNOW the iron will be THERE. it develops over time.Jon

author: ivaylo
author_rank: Frequent Contributor
timestamp: September 28, 2019, 06:34:57 am
content: Quote from: pisoiu on September 12, 2019, 08:39:24 amThese work. Mine were made out of some weird plastic though which disintegrated in the course of 12 months or so. First started cracking, then broke in smaller and smaller pieces. Probably a bad batch and manufacturing fixed long time since, but am hesitant to buy the cheap ones again.

author: jfiresto
author_rank: Frequent Contributor
timestamp: September 28, 2019, 08:25:52 am
content: Quote from: ivaylo on September 28, 2019, 06:34:57 amPlastics continue to react after formation, some much more slowly than others. My father has some coupons from the 1960s that have gotten sticky over the last couple decades. As the eldest son, I shall continue the experiment.

author: IanJ
author_rank: Unknown
timestamp: October 01, 2019, 09:53:16 am
content: Flip up headset x1.0 / x2.0 here to get me a bit closer on the fine stuff. The ones I have have 2 sets of lens and you flip both down to get x2.0.For quick work I just put on x1.0 reading glasses.I am short sighted so need glasses for computer also.......its a nightmare switching out glasses every few minutes!Getting old sucks.Ian.

author: nigelwright7557
author_rank: Frequent Contributor
timestamp: January 22, 2020, 05:20:04 pm
content: Quote from: thinkfat on September 12, 2019, 02:35:57 pmMine were £5 from Tesco. The magnifier was a couple of GBP on ebay.The alternative was prescription glasses but they were going to be £130 !

author: jfiresto
author_rank: Frequent Contributor
timestamp: January 22, 2020, 06:14:04 pm
content: It is funny to have this thread reactivated today.I had just ordered a pair of mid-grade, correctable2.5X achromatic loupe glassesafter using a simple-lens magnifier for a few years.Zeiss has somereally nice ones with Keplerian optics, but they cost the earth.

author: MudMan
author_rank: Contributor
timestamp: January 24, 2020, 11:45:55 am
content: I like this one:https://www.eschenbach-sehhilfen.com/en-GB/278/product-overview/detail/65/maxDETAIL. It has a large working distance of 40cm. No more burn marks on your nose from soldering.

author: jfiresto
author_rank: Frequent Contributor
timestamp: January 24, 2020, 04:51:44 pm
content: I would have liked to have bought those, but my left eye has too much astimatism and the model can not correct for it (correct for cylinder). I am ordering the 2.5X achromatic model, I linked to, as they give the maximum working distance and field of view, 340 and 74 mm, respectively. I hope 34 cm will be enough.

author: 1276-2449-1-ND
author_rank: Regular Contributor
timestamp: February 04, 2020, 01:38:56 pm
content: Commenting on the reading-glasses:I wear glasses, and had a set of "computer glasses" made, which are just lenses ground so the optimal focus is about 40-50 cm away. Then bifocals were added with the focus at 10-20cm. Now I can look at the monitor (schematic) and the desktop (soldering or breadboard) without having to focus on either. There's little magnification, but everything is in razor sharp focus with no eye-strain so I can work for hours. I rarely need use a magnifier any more.They came out better than expected because the very top of the glasses are out of focus in a way that makes them just like regular glasses so there are three usable zones of focus. I used a cheap online glasses vendor and did the lens calculations myself using online calculators.

author: nigelwright7557
author_rank: Frequent Contributor
timestamp: April 04, 2020, 03:52:02 pm
content: Quote from: thinkfat on September 12, 2019, 02:35:57 pmI am short sighted so anything up close without glasses is just a blurr.With 2.5 reading glasses everything is clear.I can sometimes even manage 0.5mm pitch SMD.

author: jmelson
author_rank: Super Contributor
timestamp: April 04, 2020, 04:15:51 pm
content: Quote from: nigelwright7557 on September 26, 2019, 08:13:45 pmOK, if you are doing 0.5mm lead pitch, forget those visors, eyeglasses, etc. You NEED a stereo zoom microscope.If you wear glasses, take them OFF when using the micorscope. You will have to adjust the diopter compensation onone of the eyepieces to get a stereo image that merges, but the field of view becomes at least twice as large.Also, for any soldering microscope, you want one with an absolute minimum of 100 mm working distance, and 150 mm isbetter. That gives you plenty of room to get your hands and soldering iron below the scope.I use a flip-down visor for some low-tech soldering jobs where I just need a little enlargement. But, when doing almost any type ofSMT work, I go to the microscope. I hand-soldered at least 1000 0.4mm pitch TQFP-128 parts on one project, and could not havedone it at all without the scope.Jon

author: jfiresto
author_rank: Frequent Contributor
timestamp: April 04, 2020, 04:51:38 pm
content: Quote from: jmelson on April 04, 2020, 04:15:51 pmIf your eyeglasses provide anything more than a mild correction – keep them on and get some halfway modern, high eyepoint microscope oculars! Good grief, I have astudentstereo microscope from the mid-1980s that assumes people that need glasses will wear them, and does not penalize them with any less field of view.

author: NorthGuy
author_rank: Super Contributor
timestamp: April 04, 2020, 06:42:10 pm
content: Quote from: nigelwright7557 on April 04, 2020, 03:52:02 pm10 years ago I needed +1.5 for reading and +3 for soldering. Now I use +1.5 for PC, +3 for reading, +6 for soldering. Sometimes I add a magnifying glass, but I'm still ok without it. I can solder 0.4mm pitch.

author: DrG
author_rank: Super Contributor
timestamp: April 05, 2020, 03:01:18 pm
content: Quote from: tggzzz on September 27, 2019, 02:28:52 pmTo add my experiences to the pot. I wanted to be able to do detailed soldering along the lines of smt carrier boards - that sort of thing. I debated three avenues: 1) wearable magnifying glasses, 2) bench mounted, swinging arm, large magnifier and 3) digital microscope with screen.I could not decide on the correct cost/quality break point for the digital microscope and got a little tired of evaluating them. The bench mounts I have used before, but they are cumbersome for my hobbyist area. So, I settled on a wearable.This onehttps://www.amazon.com/Magnifier-Interchangeable-Replaceable-Professional-Electronic/dp/B075R5HSMMUSD$12I am not unhappy and have used them effectively. These are NOT lenses that can be combined.3.5x is a bit too low and I would have preferred a 5x in there. So, the combinable lenses may be a real advantage.The lower powered lenses do not get used.The lenses are surprisingly scratch resistant (something that I worried about).The LED is inconsequential and I do not bother with it - I use a great deal of light when doing fine work and I have several lamps for that.Overall, for the price, I am very happy. If I had a 5x I would be happier. One issue with the wearable is that you have a limited focal area and that can be a problem. I "want" to move my head a bit and not strain and, of course, you can't do that.edit: I forgot to mention that I find them much more comfortable to wear than I thought and they are quite light.

author: ivaylo
author_rank: Frequent Contributor
timestamp: April 06, 2020, 03:25:31 am
content: The problem with larger magnification of course is focusing distance and depth of field getting short/narrow. I had no idea Keplerian optics exists for wearables (thanks to jfiresto in this thread now I do). I took the leap and ordered one of thesehttps://www.ebay.com/itm/6-0x-Magnification-Prismatic-Keplerian-Style-Dental-Surgical-Medical-Loupes/192455875976.The optics is actually decent but the aligning hardware is garbage (super important at 6x magnification!) so I ended up rebuilding them (first picture). I wouldn't use them for soldering (there is a binocular microscope for that), but for doing small things on a lathe and such they are great. Tried the Eschenbach-s, but at magnification 4x I find the outside ~30% of the periphery blurry (although they advertise decent field of view). If you know where to look eBay is great for old watchmaker's magnifiers (second image; by a company called American Optical, they are upside down on the table). Not sure why this format disappeared, I find them superior to the Optivisors and similar.

author: SilverSolder
author_rank: Super Contributor
timestamp: April 06, 2020, 11:46:24 am
content: I find Optivisors to be excellent:1) obviously, they magnify what you are looking at - different strengths of lens are available2) they shade the light, so you can use a strong desk lamp over your work and the light won't go straight into your eyes when leaning in3) unlike desk mounted magnifiers - you can move your head around to easily look at something from different angles4) full 3D vision which is surprisingly helpful5) they are pretty comfortable to wear for long periodsI use them for soldering and any other detail work.