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Typically, such a product is outfitted with one or two convex lenses. These lenses are capable of either bending light rays so that they come together. The type of magnification actually depends on where the eye of the person looking through the glass is located. Therefore, you can see the subjects smaller if you move away from the magnifying glass and see them bigger as you come closer to it.
As we were saying above, not all models are made the same, and that’s why they have different magnification powers. Some can increase the image of a subject by up to five times, but others can only do this by three times.
With most handheld magnifiers, you can always take advantage of the convenience of their design. What this means is that you can move them closer or farther from the subject or from the page of a book. In fact, that’s what most people should do if their eyesight isn’t particularly accurate.
Most magnifying glasses have a somewhat low magnifying power, especially when compared to devices capable of better performance in this sense, such as microscopes. Low-power types are common and let’s face it; they have their limitations.
One thing that few people consider when they are in the market for a new product in this line is that they shouldn’t solely focus on the magnification as a feature of their gadget. In fact, the higher the magnification capability of the glass, the more likely it is for it to produce optical aberrations, of which spherical ones are most common.
There are several magnifying glass designs you could consider if you really are interested in getting a superior magnification power. These are represented by Hastings triplets and Codding ton magnifiers. Due to their design, they are often called loupes.