Fresnel Magnifying Glass Magnifier For Reading Books-Fresnel Lens
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our store for Fresnel magnifying glass ,Fresnel magnifier, Fresnel stand magnifier for
reading small print, Fresnel magnifying sheet for book reading, Fresnel lens magnifying
glass for reading newspapers and blueprints, Fresnel magnifier with stand, Fresnel sheet magnifier for
the visually impaired, large Fresnel lens magnifier stand and 4x large Fresnel book magnifier.
What is a Fresnel magnifier? A Fresnel magnifier or Fresnel magnifier
sheet consists of a flat plastic lens with concentric grooves that permits magnified viewing of a whole
page. The focal length is about 4 inches from the object to be viewed. Fresnel page magnifiers are available
as hand held, stand, desk, table, floor and magnifying lamps. For short term duration a hand held Fresnel magnifier
is suitable but a hands free Fresnel stand magnifier is best for long term use.
Power and lighting. The power of the Fresnel magnifying
sheet is usually 2X to 4X. A Fresnel magnifying glass with light produces a clearer image and eliminates
eyestrain. Our models are LED lighted and emit a soft white light with less heat. Wear your reading glasses
for best Fresnel magnifying glass results.
$112.95 Fresnel Magnifying Glass | | 3X Lighted Fresnel Stand Magnifier
Full
page Fresnel stand magnifier hands free. 12 LED Bright daylight viewing 3X Magnification-Large 8" x
10" Fresnel Lens Magnifier
NOT AVAILABLE FOR INTERNATIONAL SHIPMENT
|
 $69.95
Fresnel Magnifying Glass | | 3X Lighted Full Page Fresnel Magnifier Stand Fresnel
3X Full Page Fresnel Magnifier On Stand With Light Large Fresnel Lens Size: 8"x10"
Full
Page Viewing
NOT AVAILABLE FOR INTERNATIONAL SHIPMENT
|
$49.95
Magnifier Information
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.
What type magnifier is best? Hand held magnifiers are best
for short duration use and a magnifying lamp or hands free magnifier with stand are best for long
duration use.
Magnifier glass power
and work distance: Select magnifiers with a power that
will allow you to perform your task at a comfortable distance. The higher the power of
the 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 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.
High power magnifiers
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