Fresnel Magnifying Glass Magnifier For Reading Books-Fresnel Lens
Shop 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
SEE OUR DESKTOP MAGNIFIER AND DESKTOP MAGNIFYING GLASS MODELS
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IMAGE AND ENTER MAGNIFIER STORE OR BROWSE BELOW
$99.95
