Connect with us

Eyeware For Close Work On Very Small Objects?

Discussion in 'Electronic Repair' started by (PeteCresswell), Nov 19, 2013.

  1. Being nearsighted, I've been able to slide along on close work until
    now.

    Just replaced the USB receptacle on my smart phone and was reduced to
    using this huge magnifier mounted on a light.

    Better than nothing, but clumsy and lacking in depth perception.

    My dentist has these binocular-looking things that hang over his regular
    glasses.

    Anybody have something that works in this respect and which does not
    cost an arm and a leg?
     
  2. Per (PeteCresswell):
    I'm thinking about buying these: http://tinyurl.com/npbcgdx

    Quality is not such a big issue with me because they would only be for
    occasional use - and not for that long a time each use.
     
  3. mike

    mike Guest

    I have several of the plastic headband ones.
    One thing to watch out for...
    Put it on your head and check the clearance
    between the headband and the hood with the lenses.
    They're designed to just swing up and out of the way.
    Problem with some is that there's interference
    between the headband and the hood that swings up.
    Takes two hands to move it out of the way.
    And you can't tell in the package, cause the band
    deforms when you tighten it on your head.

    I also have an optical stereo zoom microscope.
    Very handy for inspection, but it's very hard to work under.
    It's just too close. And mine has an accessory lens that extends
    that distance somewhat. Still hard to get tools under it.
    And I worry about the smoke from soldering messing up the lens.

    Second issue is lighting. Your hands are always in the way.
    I solved that problem with a fiber-optic light that surrounds
    the lens.

    TRY BEFORE YOU BUY!
     
  4. gregz

    gregz Guest

    I often used regular cheap reading glasses along with the visor. I had to
    remove any glasses when using the microscope.

    Greg
     
  5. amdx

    amdx Guest

    The advertising verbiage is confusing, it says "Eye Jeweler Watch
    Repair" and "Required by fishing enthusiasts" and "to ensure a distance
    of 400-500 meters" I don't believe this item can focus at 16" and 300Ft/
    Looking at the pictures, maybe there is enough adjustment on the lens
    to do that, but I'm a skeptic without enough knowledge to make up my
    mind. I'm hoping Jeff Lieberman sees this and gives his input. I don't
    know optics. I do know my optivisor is good at 8", but it's hard to work
    at 8".

    The price is "to good to be true" $29.99.

    http://tinyurl.com/npbcgdx

    Mikek
     
  6. mike

    mike Guest

    I'd recommend against that type.
    I have a similar pair.
    They work like binoculars. You have to adjust the width
    to exactly the distance between your eyes. Close-up
    vision requires that they be angled so they converge
    at the same place they focus.

    IFF you can get this done, the slightest movement in your
    head shifts the relationships, even if it doesn't move
    on your head...which it will.

    In actual use, I found them roughly equivalent to closing
    my eyes.

    I'd start with the visor type with the big single lenses.
     
  7. "Jeff Liebermann" wrote in message
    The Harbor Freight product is $4. I own it. I use it. It works. And it has
    four magnifications, not just one.

    The claim that glass lenses are inherently superior is not true for simple
    one- or two-element optical systems. Plastic lenses can be aspheric, at low
    cost. Whether the lenses in the Harbor Freight product /are/ aspheric, I don't
    know.
     
  8. Bill Gill

    Bill Gill Guest

    Well, I'm not sure what they are. Apparently it was written in
    Chinese and translated by a not very skillful translator. About
    the same as a lot of instruction manuals I have seen with cheap
    Chinese products.

    Bill
     
  9. RobertMacy

    RobertMacy Guest

    I sincerely don't mean this as an offensive statement, just an
    observation. Sometimes it helps in translating the translation if one
    thinks in terms of literal, backwards, and upsidedown. Go read the
    sentences from back to front and see. I used to get a lot of poor
    translations and the technique worked surprisingly well.
     
  10. amdx

    amdx Guest

    Hey mann, I'm really sorry, do you give 1/2 credit for getting the ie
    in the correct order? I only got that right because I checked.
    Sorry.
    I have two optivisors, two different powers, plus an optiloupe on one.
    Oh, and I where a 4.25 diopter contact lens and a 2.25 pair of reading
    glasses.
    I buy my glasses ten at a time from the dollar store. (2.25D) I buy
    them so I can sit in my computer chair and see the screen. I can't sit
    back very much though or I can't focus, but I want 2.25D because I can
    also read a book or paper.

    I recently bought a set of binocular type glasses to watch Texas
    Holdem Poker. I could not make out the percentages graphic on the
    screen. With the lenses at 10ft/11ft I can see all the tv screen but
    not much more, but I can easily read the percentage graphic. Any closer
    than 10ft and it is difficult to focus. I popped $140.00 for them.
    The same company makes a pair that focuses at about 16 inches, I'll
    probably end up with a pair of those too.
    Mikek
     
  11. If you have some money to spend go buy Madell SZM7045TR Trinocular
    Microscope with Double Bar Boom Stand. It is $590 right now and that is the
    best tool for SMD work I ever invested in :) It is here:

    http://www.madelltech.com/m4-3.html

    My advice -- do NOT try to save $70 or so by purchasing a SINGLE bar boom
    stand. You'll regret it. Double bar is WAY better.

    And if you want to use your soldering iron or whatever (I do all the time)
    get an optional 0.5x lens from them. IT serves 2 purposes. First, it
    protects the precious objectives from solder fumes so if anything went wrong
    you will only have to replace a cheap lens, not expensive objectives.
    Second, may be even more important, while reducing magnification (that is
    still pretty adequate for even tiniest SMD components) it EXTENDS working
    distance so you'll have your microscope healthy 6..8" from the work that
    gives you all the room you need for soldering and do other jobs right under
    the microscope.

    BTW, their fluorescent ring light that comes with the microscope is pretty
    fine out of the box, no need for anything else. I don't remember is a spare
    tube was included or I bought it separately just to have a spare--it was
    long ago--but I still have it in a sealed box.
     
  12. With 0.5x lens that inch is absolutely not an issue. And even if you remove
    that ring light it will be too close to the work to solder under it so you
    need that lens anyways :) It IS possible to work under it as-is, without
    0.5x lens but it is not very easy and you still have possible objectives
    contamination with solder fumes issues. Having that lens makes it a pleasure
    to work with and you can use their out-of-the-box ring light :)

    The double bar is quite long so it easily reaches across the entire depth of
    my workbench.
     
  13. You should've tried that lens :) I thought I have sufficient working
    distance too but I had to put a clear filter to protect objectives from
    solder fumes (I do use solid rosin alot so there are always plums of smoke)
    that would've destroyed them in no time. Everything changed when I had that
    lens installed. NOW I do REALLY have room to work under the microscope :)

    BTW, usual disclaimer here -- I don't have any affiliation with Madell, just
    a happy user of one of their really good products (not everything they sell
    is good; some is utmost crap :)
     
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day

-