Stand Magnifying Glass Information:
Does not apply to Fresnel Lens magnifiers
which have a focal range of 4 inches
How does a magnifying glass work? A magnifying glass is a lens which can be used to make things appear bigger, so you can see them
better. It is used in many applications and manual operations.
magnifying glass consists of a piece of convex[ shaped glass or plastic. It has to be held at the right distance between the eye and the object for the object
to be in focus.
Information On Fresnel Magnifying Glass On Stand.
A Fresnel standing magnifier consists
of a large Fresnel lens that allows for reading of a whole
What is a Fresnel magnifier?
A Fresnel magnifier consists of a flat plastic lens with concentric grooves that
permits magnified viewing. The
focal length is about 4 inches from the object to be viewed.
Our large magnifying glass on stand selection
can help those with presbyopia and macular degeneration
I need a Fresnel magnifier with light?
A free standing magnifying
glass with light will provide better magnification results as they provide a sharper and clearer image.
magnifying glass on stand with light are led or fluorescent lighted and provide a soft white
light to ease eye fatigue .
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
Fresnel Magnifier: A flat magnifier consisting of concentric
circles that can be a 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.
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The American Foundation for the Blind
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National Eye Institute
American Action Fund for Blind Children & Adults
National Eye Health Education Program