#36398

On this topic of binocular microscopes.......

I learned a wee bit about high power reading glasses.

The ones they sell over the counter have lenses that are defined as 1 or 1.25 or 1.5 or 1.75 or 2 or 2.25 etc all the way up to 3.5 diopters.

So.... I asked

what the heck is a diopter?

and

I found that I could mail order up to 7 diopter full size lens reading glasses from READERS.com and a dozen other online glasses stores.

SO

next ...learn this:

EACH DIOPTER SIZE will make things look bigger to you

and

EACH DIOPTER SIZE will have a closer focal distance from your eyeballs to your hand.... think about reading a book...

with 1.5 diopter reading glasses where at arms length the letters on the page are clear...not blurry... but tiny

and

2.5 diopter glasses makes everything look bigger ...but the focal length os more like the distance to a computer screen on a desk

and 3.5 would be bigger and clear if you huddled over that computer screen.... OR A SOLDERING IRON

and then

here is where it gets fun.....??? 4 diopter is closer and so big that you CAN solder SMD parts

? and 5 diopter is bigger...but starts pushing the limit of how close you want to put your eyeballs to a soldering iron flux splatter....

so

I use 5 more for inspection than soldering.

and

I also have 6 and 7 diopter glasses.... which make short work of removing a bee sting......

and I use all of them for different bench tasks ....much much more than I use my binocular microsope.

There are

$25?? Headband Magnifier Headset - Magnifying Visor with 4 Real Glass Optical Lens Plates (1.5X, 2X, 2.5X, 3.5X)

that? are cumbersome and I never liked them

so perhaps some 5 diopter reading glasses will work for you guys.

stefan_trethan

#36401

I actually have a trial lens?set, so I went and made up some 5 dipoter reading glasses just to see how it would be.

You are right that this could work in a pinch, like pulling out a bee sting or a soldering a quick repair, but I wouldn't want to use them for any length of time.?

It's too bad I don't actually understand optics, but I feel there is a limit as to how well you can do with a single lens.

Also the distance from the eye to the lens is too short in glasses to get really decent magnification.

(Actually I think the magnification effect in glasses might just be an unwanted artefact, because you can't put the lens close enough to the eye, unless you wear contacts.)

Sure it does look bigger, but maybe twice or three times, and my face has to be _right_ up against the object to still see sharp.

By the way for cheap glasses (reading or prescription) I can recommend

It's so great to have dirt cheap (but surprisingly good quality) glasses I can now wear for any work without?fear of damaging them.

You can use this link and get $5 off:

(I will also get $5 off my next purchase), or just search with google, they usually always have some sort of discount code active.

ST

Show quoted text

On Fri, Nov 1, 2019 at 4:54 PM Rob via Groups.Io <roomberg=[email protected]> wrote:

On this topic of binocular microscopes.......

I learned a wee bit about high power reading glasses.

The ones they sell over the counter have lenses that are defined as 1 or
1.25 or 1.5 or 1.75 or 2 or 2.25 etc all the way up to 3.5 diopters.

So.... I asked

what the heck is a diopter?

and

I found that I could mail order up to 7 diopter full size lens reading
glasses from READERS.com and a dozen other online glasses stores.

SO

next ...learn this:

EACH DIOPTER SIZE will make things look bigger to you

and

EACH DIOPTER SIZE will have a closer focal distance from your eyeballs
to your hand.... think about reading a book...

with 1.5 diopter reading glasses where at arms length the letters on the
page are clear...not blurry... but tiny

and

2.5 diopter glasses makes everything look bigger ...but the focal length
os more like the distance to a computer screen on a desk

and 3.5 would be bigger and clear if you huddled over that computer
screen.... OR A SOLDERING IRON

and then

here is where it gets fun.....??? 4 diopter is closer and so big that
you CAN solder SMD parts

?? and 5 diopter is bigger...but starts pushing the limit of how close
you want to put your eyeballs to a soldering iron flux splatter....

so

I use 5 more for inspection than soldering.

and

I also have 6 and 7 diopter glasses.... which make short work of
removing a bee sting......

and I use all of them for different bench tasks ....much much more than
I use my binocular microsope.

There are

$25?? Headband Magnifier Headset - Magnifying Visor with 4 Real Glass
Optical Lens Plates (1.5X, 2X, 2.5X, 3.5X)

that? are cumbersome and I never liked them

so perhaps some 5 diopter reading glasses will work for you guys.

#36409

I have various reading glasses but none over 2.25. I also have a headband magnifier which is nice but non-adjustable. I got the one with a 14" distance and that is somewhat limiting. Good info.
Dave

#36429

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Your mileage might vary...... thats why I suggested buying 3, 4, 5, and 6 diopter glasses real cheap.

You WILL use them all for something.

by the way.... funny story about zennioptical.com

A young many named Tom lived across the street from me.

He broked his glasses frame and could not afford to replace them

so

I took his glasses to Walmart and told them to put it on their machine that read the glass prescription

so that we could replace the glasses.

The walmart staff informed me they can't just give me that prescription.

Not allowed.

So then I asked if I can buy a frame and they install the old lenses

and

they said YES we could do that.

and then

THEY picked out the frame...not me.... I left it up to them to get a matching frame

and then

as the technicians worked on installing the lenses they DID get the prescription printed out

and handed me the paper prescription

and then

they informed me that their frames were not a perfect match and they CAN NOT install the lenses

and gave me back the broken glasses.

and then

I went home and ordered $25 glasses from zinni? for Tom.

and then

I visited Tom and told him glasses would be coming in a week and after I told him what happened at Walmart

he said ...."WOW... thats some real Darth Vader? mind probe stuff there dude!....they said NO and then you said?? TTTEEELLLLLL? MEEEEE "

?

On 11/01/2019 01:03 PM, stefan_trethan wrote:

Show quoted text

I actually have a trial lens?set, so I went and made up some 5 dipoter reading glasses just to see how it would be.
You are right that this could work in a pinch, like pulling out a bee sting or a soldering a quick repair, but I wouldn't want to use them for any length of time.?

It's too bad I don't actually understand optics, but I feel there is a limit as to how well you can do with a single lens.

Also the distance from the eye to the lens is too short in glasses to get really decent magnification.

(Actually I think the magnification effect in glasses might just be an unwanted artefact, because you can't put the lens close enough to the eye, unless you wear contacts.)

Sure it does look bigger, but maybe twice or three times, and my face has to be _right_ up against the object to still see sharp.

By the way for cheap glasses (reading or prescription) I can recommend

It's so great to have dirt cheap (but surprisingly good quality) glasses I can now wear for any work without?fear of damaging them.

You can use this link and get $5 off:

(I will also get $5 off my next purchase), or just search with google, they usually always have some sort of discount code active.

ST

On Fri, Nov 1, 2019 at 4:54 PM Rob via Groups.Io <roomberg=[email protected]> wrote:

On this topic of binocular microscopes.......

I learned a wee bit about high power reading glasses.

The ones they sell over the counter have lenses that are defined as 1 or
1.25 or 1.5 or 1.75 or 2 or 2.25 etc all the way up to 3.5 diopters.

So.... I asked

what the heck is a diopter?

and

I found that I could mail order up to 7 diopter full size lens reading
glasses from READERS.com and a dozen other online glasses stores.

SO

next ...learn this:

EACH DIOPTER SIZE will make things look bigger to you

and

EACH DIOPTER SIZE will have a closer focal distance from your eyeballs
to your hand.... think about reading a book...

with 1.5 diopter reading glasses where at arms length the letters on the
page are clear...not blurry... but tiny

and

2.5 diopter glasses makes everything look bigger ...but the focal length
os more like the distance to a computer screen on a desk

and 3.5 would be bigger and clear if you huddled over that computer
screen.... OR A SOLDERING IRON

and then

here is where it gets fun.....??? 4 diopter is closer and so big that
you CAN solder SMD parts

?? and 5 diopter is bigger...but starts pushing the limit of how close
you want to put your eyeballs to a soldering iron flux splatter....

so

I use 5 more for inspection than soldering.

and

I also have 6 and 7 diopter glasses.... which make short work of
removing a bee sting......

and I use all of them for different bench tasks ....much much more than
I use my binocular microsope.

There are

$25?? Headband Magnifier Headset - Magnifying Visor with 4 Real Glass
Optical Lens Plates (1.5X, 2X, 2.5X, 3.5X)

that? are cumbersome and I never liked them

so perhaps some 5 diopter reading glasses will work for you guys.

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Microscopes for SMD soldering etc .....5 DIOPTER reading glasses

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