The history of glasses can be dated back to thousands of years ago. In particular, the history of glasses used as magnifying devices is over four thousands. And now, these magnifiers are still widely used among people who have weak vision and who want to see objects in a larger image. Therefore, magnifying glasses can still play very important role in people’s daily lives, no matter what they are used for.
Magnifiers are usually made in this design- hand lenses. This is the major and commonest form of these glasses. This design can really bring wearers a lot of convenience when they want to see something minor- people just need to move the glasses with hands between eyes and what they want to see, so as to find an accurate and balanced distance for clearer vision. Of course, these magnifying devices can also be designed in other forms, like “jeweler’s loop”, though rare, according to user’s needs and personal situations.
Different magnifying glasses have different magnifying power. Magnifying power is one of the most index to decide to what extent cant these lens work or magnify the imagine. Usually, the larger the power is, the greater the imagines will be.
Though these magnifying devices are used, mainly because of their special functionality, they can also be made in fashionable designs. Especially, those trendy designs are suitable for vogue people. For example, the handle can be made from different materials, so as to meet user’s different individual needs. Some people love wooden handles; others like plastic hands; some others love handles made from other materials. In addition, the colors of the handles and frames can tined in different colors. Black is most traditional and widely used color on them. However, other colors can also be used to brush the handles and frames of these glasses according to users’ personal needs. For example, magnifying glasses, with handles tinted in red, green, and other eye-catching colors, are especially ideal options for female users.
Compared with other glasses, magnifying glasses are very cheap and can be afforded by almost all people. On the one hand, these glasses are just suitable for temporary use when needed. This distinguishes them from other glasses, which are usually for daily use. On the other hand, it will cost little to produce these magnifying devices- the cost to make them is very low; neither any personal prescription nor any complicated testing procedures is needed. Therefore, each of them can be purchased at several dollars.
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