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Magnifier Information Need help in reading but an ordinary magnifier only enlarges a
small section of the page. - A
full page magnifier for reading will magnify a whole page of small print.
- Make reading more enjoyable with
our optical quality Fresnel page magnifier for reading tiny print, magnifying page for reading and eliminate eye strain.
- Large selection of hands free full page magnifier for reading and magnifying
page reader models.
What Is A Fresnel Lens? A Fresnel
lens for reading purposes consists of a flat plastic lens with concentric grooves on one surface and a flat surface on the
other surface Originally invented by Augustine
Fresnel. The original Fresnel lenses were used to magnify the lighthouse beacon light. A Fresnel lens is thinner then
a ordinary convex magnifying lens This meant that more powerful and lighter lenses could be used in lighthouses.
| Need
help in reading but an ordinary magnifier only enlarges a small section of the page. - A full
page magnifier or magnifying page reader will magnify a whole page.
- Make reading more enjoyable with our optical quality Fresnel page
magnifiers eliminate eye strain.
- For best full page magnifier results wear your reading glasses.
What is full page
magnifier? A
full page magnifier consists of a Fresnel lens that enables large area magnification. Available as a hand held
full page magnifying glass or a hands free full page magnifier. What type of full page magnifier for reading should I use? A hand held full page reading magnifier for should
be used for short term use. A hands free full page magnifier should
be selected for long duration use. How does a full page
magnifying glass work? Full page magnifiers have a focal range of up to 4 inches. Full page magnifiers that lay flat on the page or full page magnifiers
that lay on page are not available. For proper magnification a full page magnifier has to be a few inches above
the page. Dome magnifiers
lay flat on page. Advantage of a full page magnifier with light: A full page magnifying glass with light is best as it provide a sharper and clearer image.
Our full page magnifier with light for reading provide a soft white light. |
After the age of about forty you
will experience a problem viewing small print and tasks involving close detail work. This eye condition is called presbyopia and magnification is the answer. Large selection
of full page magnifier with light and magnifying page reader. Magnifier glass power and work distance: Select a book size magnifier with a power
that will allow you to perform your task at a comfortable distance. The higher the power of the full page magnifying glass or magnifying
page reader the shorter the focal range(work distance) and the smaller the field of view. The
high power magnifier magnifying page 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 page magnifier consisting of
concentric circles.
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.
Full Page Magnifier For Reading Links The American Foundation for the Blind The National Federation of the Blind Bookshare National Library Service for the Blind and Physically Handicapped Paths To Literacy Classroom National Eye Institute Optometry Cares American Action Fund for Blind Children & Adults Children's Eye Foundation Sight for Students MD Support National Eye Health Education Program, | 
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