| Magnifier Information
What
type magnifier is best? A hand held magnifying glass for needlework is best
for short duration use and a needlework magnifying lamp, needlepoint magnifying lamp or hands
free magnifying glass for needlepoint with stand are best for long duration use. Magnifier glass power and work distance: Select needle point magnifiers with a power that will allow you to perform your task at a comfortable distance.
The higher the power of the
needlepoint 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 magnifying light for needlepoint magnifier selection will help 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 reading magnifier.
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.
Rules Of Magnification. - 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.
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