h a l f b a k e r yThis ain't rocket surgery.
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these are plain glass spectacles (or prescription if you want) that are capable of zooming into the object of your desire.
in my case, ducks, birds, insects and other myriad wildlife that I might not normally be able to distinguish very well.
I imagine that there would be a knob or a wheel somewhere
on the spectacles that would allow a 2nd lens to move its focal length to move in and out in increments.
that’s it basically - simples!
clip-on telescope is all I can find now...
http://www.albinism...ow-vision-aids.html
[xandram, May 28 2009]
Telescopic Glasses
http://www.associat...scopic_glasses.html
[21 Quest, May 29 2009]
Telescopic Driving Glasses
http://www.wchstv.c...yforlife/2164.shtml
[21 Quest, May 29 2009]
Max TV Telescopic Glasses
http://www.sightcon....com/maxtvtegl.html
[21 Quest, May 29 2009]
These ones are used by dentists
http://www.amd.org/...ses-telescopic.html
//Telescopic glasses consist of a very small telescope that is mounted inside the lenses of the glasses. The telescopes are very small, approximately ½ inch to 3-inches in length, depending on the power of the telescope. Low vision specialists will incorporate the glasses prescription into the telescope and the telescope may be adjusted to focus at various distances// [21 Quest, May 29 2009]
Not what you mean I know [po], but I thought you'd like to see it just the same.
http://www.kennelson.com/newblog/?p=2881
[2 fries shy of a happy meal, May 29 2009]
[link]
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with negative refractive indices now possible, the second lens might be superfluous. |
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I wonder if you could create a dynamically tunable fresnel lens using concentric arrangements of liquid crystal? |
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funny we were discussing this the other day!! My dentist (who is now dead) used to wear something like these over his glasses. They might be something jewelers use. I have to go look now... |
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This is far too practical and doable for a [po] idea.
Make it by a scientist or something and I'll bun it. |
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Oh wait. [po]'s my buddy. I love her. ++++++ then. |
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This sounds like a typical pair of jeweler's glasses, only opposite. I
like! |
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(edit: I found some startlingly similar glasses with a simple Google Search. Not sure if they're the same; will post links and let you decide if any of them are the same thing as your idea) |
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that 4th link is good but it requires you not to be walking which would defeat my purpose. |
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2fries' link sounds a great idea for the third world. |
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