Funny little $6 eBay glasses ....
Beau Schwabe
Posts: 6,566
Ok, so don't laugh... I bought a pair of these so I can see some of the small detail when working with surface mount electronic components, and they are excellent by the way for removing splinters. For $6 free shipping they are a steal. I did have to remove the secondary lens on each eye piece, as 20X was way to strong. (the lenses just unscrew) ... optical alignment/convergence is a bit of trial and error, but once you get used to it, it's not so bad. There's almost no way to get dual convergence when you have that much hands free magnification, you just have to pick one eye or the other. Each eyepiece does flip up and out of the way also.
http://www.ebay.com/itm/130722739917?ssPageName=STRK%3AMEWNX%3AIT&_trksid=p3984.m1439.l2649
Recently, I accidentally dropped my touch pad and it hit the floor and flew apart. Usually this wouldn't be such a big deal since it just snaps back together. However it hit just right and broke a surface mount inductor inside that is part of the display driver (instead of going completely black it went full white, except when I pushed or torqued the tablet just right ... This only worked a few times before it was a steady washout) ... Anyway, these glasses came to the rescue, and I was able to identify the broken component and make a repair .... I unwound one of the turns on the inductor, and stripped and re-tinned it ... for a $6 pair of funny glasses, surgery was a success!!
http://www.ebay.com/itm/130722739917?ssPageName=STRK%3AMEWNX%3AIT&_trksid=p3984.m1439.l2649
Recently, I accidentally dropped my touch pad and it hit the floor and flew apart. Usually this wouldn't be such a big deal since it just snaps back together. However it hit just right and broke a surface mount inductor inside that is part of the display driver (instead of going completely black it went full white, except when I pushed or torqued the tablet just right ... This only worked a few times before it was a steady washout) ... Anyway, these glasses came to the rescue, and I was able to identify the broken component and make a repair .... I unwound one of the turns on the inductor, and stripped and re-tinned it ... for a $6 pair of funny glasses, surgery was a success!!
Comments
These days I am pondering making a DIY board with 0.4mm wide pads with 0.4mm gaps. IT wasn't so long ago I had a Rapidograph pen that would draw lines that wide for darker boarders. And of course, the silicon chips these days are 1/10th of the size of your average postage stamp.
I don't really care that someone might think the glasses are funny, but I do dislike having no peripheral vision.
"What kind of working distance do these have?" - Very close...about two inches clearance. These are only used in special circumstances, I have another pair of glasses that are 3x for general work, but in my latest use, the inductors were about 2.5mm diameter and the wire I had to repair was super fine.
Don't forget you also need a helmet and headlights.
-- Gordon
FF
Yeah, the word medical is a significant multiplier.
"The working distance is about 4 inches and the magnification is 3.5x." - That sounds about right if the X20 with the removed secondary lenses reduce the magnification to something less than X10 giving me about 2 inches of working distance..
-Tor
I have the Optivisor DA-5 and a swivel loupe - they are expensive compared to the ones Beau mentioned
The Optivisor magnifiers have the following specs
Item No
Focal Length
Magnification
DA-2
20"
1.5x
DA-3
14"
1.75x
DA-4
10"
2x
DA-5
8"
2.5x
DA-7
6"
2.75x
DA-10
4"
2.5x
You guys are so funny, these are only $6 ... for the number of little things my daughters have handed me to fix, including removing a splinter (the kind you think you got, but as soon as you ever so lightly brush against something the wrong way, you definitely know it's still there) ... so far they have more than payed for themselves. Theses glasses are more of a novelty than anything else, but at the same time very useful ... around our household anyway.
Yes, the surgical loupes Frank mentioned will do this, as will a Mantis from Vision Engineering (they're as not cheap though).
If you consider the cost over 5+ years it actually can be justified to your controller. Just have him/her look at it like getting glasses.
FF
FF
awesome I thought about picking a pair of these up, but thought they looked kinda of cheep. Glad they are not, gonna order a pair tonight. Although I will probably use them more for painting then smd work...
All along I thought these were those psychedelic diffraction grating glasses popular from the 60s!
Other kinds of diffraction grating glasses allowed us to have X-ray vision and see through clothes. Amazing stuff they no longer sell!
I was never good at soldering, period, but especially small stuff. I don't see (literally) how people do it. The smallest I get is using +3 diopter reading glasses, so basically small -- but not surface mount -- stuff.
-- Gordon
That's very surprising to hear, Mr. RBB! This little girl's soldering skills sure came in handy at the science fair: http://www.youtube.com/watch?feature=player_detailpage&v=2CxMm0ksJ8Y#t=207s
Try these cheap headmount lenses:
http://biltema.no/no/Kontor---Teknikk/Kontorutstyr/Maskiner/Hodelupe-19712/
(59NOK, about $11 )
Max magnification is 4.8X
Good enough that I managed to solder the SMTs on the RAMPS 1.4 controller board for my Prusa Mendel printer.
-Tor