Hand Magnifiers
Many people have asked, what is the difference between a x power and a diaopter?. The following is the best example.
What is a DIOPTER?
Diopter refers to the curvature of a lens. As the diopter increases, the lens becomes thicker and the curvature greater. As the curvature increases, light rays are redirected to fill a greater portion of the viewer's retina which makes the object look bigger.
What is POWER?
Power refers to how much larger an object is made to look through a magnifying lens. Power is typically indicated by an "X" such as 2X or 4X. The formula for computing power is as follows:
| Diopters 4 |
= | Power | 8 4 |
= | 2X |
|---|
Therefore, an 8 Diopter lens makes an object look 2 times bigger, over and above what the unaided eye already sees.
Sometimes magnifiers can be easier to use than a pair of glasses and they can offer greater magnification and a larger variety of magnification levels.
We offer a variety of illuminated and non-illuminated hand magnifiers from Eschenbach, Coil, Donegan, Schweitzer, Mattingly and others.