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Large selection of lighted headband magnifiers
for crafts and jewelers headband magnifiers for jewelry making.
Magnifier glass power and work distance:
Select a magnifying headband with a power that will allow you to perform
your task at a comfortable distance.
The higher the power of the headband magnifier the shorter the focal range(work distance) and the smaller
the field of view.
The high power magnifier may not be the best magnifier for you. Our large magnifier selection can
help those with presbyopia and macular degeneration.
Field Of View: The size of the area being magnified
when viewing through a magnifying lens. The higher the power of the magnifier the smaller the field of view.
Diopter: Diopter is a measurement that is
used to calculate the power of a magnifying lens. The higher diopter will provide higher magnification. Diopter
is expressed as "D"
Power: Power is how large an object or print increases as you look through
a lens. Magnifying power is expressed as "X"
Focal Length: Measurement from the center
of the lens to to the object and be in focus.
Focal Range: The distance from the magnifying lens to the object being viewed.
Fresnel Magnifier: A flat magnifier consisting of concentric circles that can be a full page
Visual impairment (or vision impairment) is a decreased ability to see
to a degree that causes problems not fixable by usual means, such as glasses or medication. Our low vision magnifiers can
be of help.
- The higher the power of the lens, the closer you must get to the object being viewed and the smaller
the field of view.
- As the power of a lens increases the diameter of the lens decreases.
- Diopter is a term used to determine
the power(magnification}of a lens. The terms are sometimes confused.
- High power magnifiers such
as 8x must be held steady or else they will be out of focus.-