Magnifier Lamp Buying Guide
This is not much of a guide to magnifying lamps, rather, more of some basic knowledge on the magnifying lenses. Whether to get a desk lamp type, a table/bench clamp type or a mobile stand type, is totally your choice depending on your application and budget. What we could do here is to assist you to find the appropriate lens. Right now we carry 3 (sometimes referred to as 3D or 3d, same for 5 diopter and so on) and 5 diopter lenses on many models, and 8 diopter lens on some other. Please understand that 3 diopter does not equal to 3X. There is a formula you can use if you really want to know how many Xs a lens is.
Where “D” is the diopter number given, and “X” being what we normally know as the power or strength of magnification. That is, use the given diopter numer, for instance, 3 to be divided by 4, then plus 1, that equals 1.75, which is what we call as the magnification strength, often expressed as 1.75X.
|Diameter||5″ / 127mm||5″ / 127mm||5″ / 127mm|
|Weight||0.71lb / 320g||0.93lb / 420g||1.28lb / 580g|
|Focus Range||≈ 1″ – 9″||≈ 1″ – 7″||≈ 1″ – 5″|
[Fig 1] 3 Diopter Lens
[Fig 2] 5 Diopter Lens
[Fig 3] 8 Diopter Lens
We hope the above information is helpful for you in choosing which lens is more appropriate for your application.