PeopleTalentLink

Many people need magnifying glasses in certain circumstances, such as reading a newspaper, a magazine, the fine print over a map, a menu as well as examining a diamond ring or gemstone. Currently, there are various kinds of magnifiers, including Head Visor magnifiers and pendant necklace magnifying glasses. The first criterion is that the type of magnifying one chooses should match the use of it.

Magnifying glasses are now provided in different styles and designs. And different people need specific magnifying power. For instance, ordinary people could use a 5x hand-held magnifier to look at windshield for defects. A pocket 10x folding magnifying glass is helpful to get a border protection department and a police department. In addition, prescription loupes can be used by a county department of agriculture to examine crops for insect and blight problems.



For general reading, hand held magnifiers are convenient and helpful. For newspapers or books, people always use a magnifier with 3x or 6x magnification and 3 or 4 inch diameter. And then for finer print materials, magnifiers with 8x or 20x magnification are required. For people with low vision, magnifying glasses in standard design are not competent and they may make use of electronic vision aids which can offer greater magnification.

This is the explanation of various terms of magnifying glasses. Magnifying power means ale a magnifying glass to increase the visual size of an object. A magnifying lens simply bends light inside a special way and makes an image looks greater than an actual object. The X indicates the magnifying power. As an example, a 3x glass triples a graphic and 4x magnifiers magnify a physical object 4 times.

Focal length or working distance is an additional way to classify magnifying glasses. This element represents the space that should be set involving the magnifier plus an object in order to get the optimal magnification effect. As an example, a lens with 2x magnification and 5" focal length implies that the lens can provide double magnification when it's held at a distance of 5" in the object.

Field of view simply indicates the dimensions of the area that a person sees with the glasses. Depth of field is the distance a magnifier may be moved above an object and still maintains focus ability. Generally, depth field decreases as magnification power increases.