Varieties
First of all, magnifying optics differ in the type of attachment. There are these types of mounts:
- with elastic rim;
- "Bows";
- clothespins (they are fixed on a visor or glasses);
- adjustable plastic rim.
There are also cosmetic loupes. They help you see the surface of the skin more closely. Such products are used for cosmetic purposes for hair removal, extension.
Medical eyepieces are worn for all kinds of manipulations, during which it is necessary to work with small objects. Thanks to such products, the effectiveness of surgical interventions increases and the risk of complications decreases.
Cosmetic loupes are devices that are attached to the head. With their help, the available inspection area is increased. The lenses in these products are three-dimensional. The backlights are powered by batteries.
Model overview
The models of magnifying devices offered on the market differ in quality, cost, and technical characteristics.
Big Vision Magnifying Glasses
This product is manufactured in China. The manufacturer claims that the size of the image increases while wearing them by 160%. Cost - up to 1 thousand rubles.
The glasses are completely made of plastic materials. The instructions for use give the following recommendations for buyers:
- the product is put on the tip of the nose, because the lens is curved, and the best clarity is when it is worn that way;
- it can be used together with diopter glasses, contact lenses;
- focal length ranges from 30 to 40 cm.
In some cases, you may experience headaches while wearing this device.
Glasses 9892G-3A
They are suitable for working with very small parts. The focal length is from 20 to 30 cm. The delivery set includes 4 lenses. They are worn on the bridge of the nose, in addition, they have a rubber strap so that they can be fixed on the head. The body rises comfortably in the form of a visor, which is useful when working at different distances.
The lens ratio is from 10 to 25. The front part is equipped with two very bright LEDs. They are powered by a battery.
The lenses of these glasses are made of durable acrylic glass for long lasting performance. In terms of hardness, this lens is inferior only to glass. Cost - from 700 rubles.
Binocular magnifier Magnifier QC X3,5-420 / LED
This device is used for medical purposes - dentistry and microsurgery. Due to the peculiarities of the scope of application, the glasses are firmly fixed on the head. A very bright illumination is built into the case, which is used for additional medical procedures. Optical characteristics are adjusted depending on the type of work performed. Main characteristics:
- increase - 3.5;
- field of view - 7 cm;
- working distance - 32 - 42 cm;
- weight - 730 g;
- diode glow time - 5 h;
- luminous flux - up to 30 thousand lux;
- diode power - 3 W;
- service life - over 10 thousand hours;
- charging voltage - adjustable.
The scope of delivery includes binocular loupes, a frame, a cleaning cloth, an LED illuminator, a power adapter, a battery, an adjusting screwdriver, protective caps for magnifiers, a case with a zipper.
Magnifying glasses (binoculars) Zoomies
They are a convenient and compact solution for binoculars. Cost from 1000 rubles. The device is great for nearsighted people.
Attention is drawn to the lightness and compactness of the glasses. Comes with a secure, protective case
Made of highly durable and impact-resistant plastic. Product weight - 62 g.
Eschenbach
The products of this company are the market leader in optical devices.Eschenbach magnifiers can be used for people with different degrees and types of normal refractive errors. Head magnifiers are firmly and comfortably attached to the head, ideal for working with very small objects.
Clip-on magnifiers are used for attaching to ordinary glasses. Allows you to see the smallest objects without discomfort.
Eschenbach handle magnifiers are used for minor household work. Some of them are adapted to be worn around the neck so that they can be used at the most crucial moment.
Electric magnifier Eschenbach Electronic Magnifier has a variable magnification factor, 5 viewing modes. The device can be used at any time of the day, at home, at work and even while traveling without any discomfort.
Species overview
Depending on the purpose, magnifying glasses are of two main types: ordinary and illuminated.
Regular
For home use, the usual version of the accessory is enough. Such magnifying glasses are similar in design to corrective glasses. They have a comfortable frame, a silicone nose piece, and temples. But the optical part has a multiple magnifying effect. Distributed among pensioners, philatelists, numismatists, radio amateurs, needlewomen - in a word, among ordinary users.
Backlit
These optical instruments are complex in design and are intended for professionals. These are binocular magnifying glasses with local illumination of the working area, with a set of interchangeable lenses. The backlight is powered by batteries. There are head-mounted and folding model options.
They are widespread in medicine (microsurgery, dentistry, vascular surgery), as well as among specialists in electronic equipment, radio technicians, watchmakers and jewelers. The cost of such devices is much higher than ordinary magnifying glasses.
Optical indicators for selection
The focal length changes depending on the magnification. It is convenient to represent this relationship in the form of a table.
Magnification factor | Focal length in mm |
---|---|
1,0 | 300-350 |
1,5 | 240-260 |
2,0 | 215-235 |
2,5 | 205-225 |
3,0 | 160-180 |
3,5 | 135-145 |
4,0 | 125-135 |
4,5 | 110-130 |
5,0 | 100-120 |
5,5 | 80-95 |
6,0 | 60-85 |
There is no universal scale for multiplicity. All figures are between 1 and 6. They are rounded to the nearest half. As can be seen from the table, the magnification is inversely proportional to the focal length. Eyepieces of the smallest magnification are selected depending on the scope of application. If it is more than 3.5, then you need to use a diode backlight to avoid complications.
The parameter of the distance between the centers of the eyes depends on each individual person. It is configured individually. With a small interpupillary distance, binoculars cause minor discomfort, and the eyes get tired quickly. With a distance between the pupils of 6.4 cm, the work is most optimal. The size of the field of view depends on the design, magnification. This indicator is inversely proportional to the multiplicity.
Focal length values can vary greatly depending on working and focal lengths. The material and design of the system determines the ability of glasses to clearly display especially small objects.
The sharpness of the device depends on the design, magnification, and accommodation of the eye. The specified parameter will be individual for each person.
Specifications
Magnifying optics are designed to work with small objects (for example, jewelry, computer components). They can also be used in a domestic environment.
There are desktop devices for small jobs, but due to their bulkiness, their use is limited.
A binocular product is a special magnifying lens made of glass, plastic or other materials. It is attached to the forehead, parallel to the eyes with a belt. The fixation is very reliable; during work, the possibility of slipping is almost completely eliminated.
Lenses are usually rounded. However, there are other forms of these products, depending on the scope.Plastic products are lightweight and safe. In case of accidental damage, the material does not damage the eyes by fragments, it is stable and retains its transparency for a long time. Plastic does not cause allergic reactions at all.
Adjusting these glasses is easy and convenient. The lenses are made of high quality material that allows you to achieve even 20x magnification. Some models are equipped with LED backlighting, allowing you to see even the most difficult to reach places.
The scope of delivery also includes bandages that fix the optical system. This feature is useful for working in unusual and extreme conditions. Dressings help to avoid diseases of the musculoskeletal system.
Technical details
The basis of the binocular system is magnifying glasses. They provide a large viewing area. To increase the capabilities of the glasses during operation, LED backlighting is used. The switch for it is located on the left. The lenses can be adjusted in different directions. Product weight - 100 g.
The backlight works in such a way that it illuminates objects without shadows. It can be lateral or central. Individual magnifying systems have the additional function of adjusting the direction of the light.
The kit includes replaceable lenses and slots for them. They are stored in additional containers. With the help of interchangeable lenses, you can select the required magnification for a particular job.
How to install lenses
The sequence of actions when installing the lens is as follows:
- put the lens on a clean cloth, clean it with ethyl alcohol or water;
- place it with the convex side outward;
- insert into the hole.
The lenses are handled with paper or cloth, otherwise fingerprints may remain on them.
The main characteristics of the device
Illuminated magnifying glasses can be used in completely different fields. Many people buy it for work in radio electronics, watch repair and for creating jewelry. Professional collectors often prefer this model too. Thanks to the large magnification, a rare coin or stamp can be easily seen with a magnifying glass.
Conveniently, the magnifier is mounted on a thin and light spectacle frame. The buyer can choose a magnifying glass in the form of glasses or a monocle. In any case, the characteristics of both devices will be identical. Some models have interchangeable lenses in the kit, the cost of glasses in this case will be higher than usual by about three hundred to five hundred rubles.
The optics are made of special plastic, and the backlight is provided by batteries. Most often, there are at least three of them in the kit.
Magnifying glasses: what are they
The commercials give a great idea of what magnifying glasses are, and the reviews are great complements to the video reviews. However, we will still try to convey to the readers the main characteristics of this unique item.
If we outline this invention in short, then we can say that it combines the advantages of glasses and a magnifying glass at the same time. On the one hand, it has the shape of glasses and is very firmly adhered to the bridge of the nose during work. On the other hand, it has a multiple magnification, which allows you to thread a needle, repair a watch or examine rare coins from the collection without undue tension of the eye muscles.
The manufacturer promises in the advertisement that buyers will no longer suffer from vision problems. At the same time, judging by the reviews, magnifying glasses do not need to be worn continuously. They will not spoil the appearance, because they can only be worn during work.
Many people have already become the owners of this interesting and useful item in everyday life, and therefore it is not too difficult to form an opinion about it based on real comments. A little later we will give reviews of magnifying glasses, and now we will consider their types.
Zoom HD Glasses Review
Today we could not ignore another model of glasses, which most of the buyers refer to as ordinary magnifying glasses.The external design is quite typical for such models, however the product itself has several features.
Unique lenses are able to suppress glare and reduce stress on the retina. The manufacturer claims that when working in these glasses, the eyes relax. This helps to dilate blood vessels and improve blood circulation. Thus, tissue regeneration is triggered, the outflow of excess fluid from the tissues and an improvement in their nutrition. All this leads to an improvement in vision, so we can safely say that magnifying glasses have a pronounced therapeutic effect.
The external design is quite typical for such models, but the product itself has several features. Unique lenses are able to suppress glare and reduce stress on the retina. The manufacturer claims that when working in these glasses, the eyes relax. This helps to dilate blood vessels and improve blood circulation. Thus, tissue regeneration is triggered, the outflow of excess fluid from the tissues and an improvement in their nutrition. All this leads to an improvement in vision, so we can safely say that magnifying glasses have a pronounced therapeutic effect.
Conveniently, this device is sold without a doctor's prescription and can be used by men and women.
If we analyze customer reviews, then the advantages of the device become obvious:
- structural reliability;
- ease of use;
- lightweight and durable, so you don't have to worry about breaking;
- differ in universal design and size;
- absolutely safe for eyesight;
- not only magnify objects, but also make them much clearer;
- no distortion;
- restore vision.
Most of those who purchased this device note that their life has changed qualitatively. They are very enthusiastic about their purchase and advise not to postpone its purchase for those who need vision correction.
disadvantages
There is a fairly widespread belief that the magnifying system negatively affects the state of vision. However, the risk of this is very small if the optics are selected correctly and the peculiarities of the eye of the person using the instrument are taken into account. Moreover, the eyepieces relieve the stress on the eye muscles.
Magnifying glasses for small works - photo
Binoculars must be selected for individual parameters, so cheap analogs will not work. They can impair vision. In clinics, budget models of a magnifying system with averaged characteristics are most often used. These devices are usually used by several specialists. True, it is not recommended to use universal devices for a long time.
At first, wearing such glasses can be uncomfortable.
Compared to a microscope, which can be used in some areas as an alternative magnification option, binocular glasses have a short focal length. However, for setting other parameters, the glasses are more compact and more convenient. Eyepieces are preferable for work that requires finding an object at a relatively short distance.
Review overview
The popularity of magnifying glasses among buyers is steadily increasing, and more and more positive reviews about this unique ophthalmological device are published on the Web. Many buyers have noted a number of undeniable advantages.
- Absolute comfort in use due to the universal size, since most of the models are equipped with adjustable temples.
- Beneficial effect on eyesight when used correctly. Many cases of slowing down and even stopping of the process of reducing visual acuity have been noticed. Some nearsighted and farsighted buyers have reported, however slight, improvement in vision. Many ophthalmologists with many years of medical experience also speak about the positive effect of magnifying glasses on vision.
- Free hands make any work much easier.
- A possible magnification rate (up to 160%) turned out to be quite sufficient to carry out work with the smallest elements.
- The original one-piece design provides maximum visibility without distortion.
- They do not require an obligatory visit to the doctor (sold without a prescription), are equally suitable for men and women.
In addition to positive aspects, buyers point out disadvantages in reviews.
- Magnifying glasses are difficult to find in pharmacies or optical stores. This disadvantage can be considered relative, since there are many sites on the Internet sites where you can select and order the desired model. But with this method of purchase, it is really possible to inspect the device and try it on only after receiving it. And not all elderly people own a computer and easily navigate in the virtual space, and many do not have a computer at all.
- Paid delivery of such products to the regions of Russia on most resources.
- Insufficient strength of the temples-temples on some models.
Despite the noted drawbacks, most buyers recommend this new product to everyone with vision problems, since the real benefits of using it significantly exceed the negative points. It is necessary to use magnifying glasses strictly according to the recommendations of ophthalmologists, otherwise, instead of being useful, the device may harm. It must be remembered that when working with magnifying glasses, obligatory breaks are required in combination with simple gymnastics for the eyes so that the visual system periodically gets rest
If you use the accessory with reasonable care, exactly following the recommendations of experts, then there will be no problems.
In the next video you will find an unboxing and review of magnifying glasses from AliExpress.
The advantages of the device of this company
If you focus on reviews about Big Vision magnifying glasses, then we can highlight their main advantages:
Significant increase. People with poor eyesight know how difficult it is at times to read small text or discern what a doctor wrote. Therefore, the increase promised by the manufacturer seems to be a real miracle.
The ability to work with both hands. Previously, people with vision problems used ordinary loupes, but in this case they had only one free hand. In many cases, this simply did not allow you to perform this or that action correctly.
Lack of tension of the optic nerve. When you start using Big Vision magnifying glasses, you will forget for a long time that you have to squint, strain your eyes and bring objects close to your face. You will feel like a free and absolutely healthy person.
High quality lenses. The optical lenses used in these glasses do not give any distortion. Therefore, in case of certain eye diseases, they can be worn even together with ordinary glasses.
Strength. The manufacturer produces a fixture made of durable plastic. The lenses themselves and their frames are made from it. This gives the glasses great strength, they will not break even if you accidentally sit on them. In addition, they have a special anti-slip bow, which securely attaches the magnifier to the bridge of the nose and prevents it from sliding off during operation.
Wide view. If you've ever used a magnifying glass, you know that it significantly reduces the viewing angle. But the product from "Leomax" gives an almost panoramic view of the subject
This is especially important when using magnifying glasses for embroidery or reading, for example.
This device is suitable for different purposes, and therefore is in great demand.
Advantages
These devices increase work efficiency, increase comfort during the production process. When using these devices, the development of occupational pathologies is prevented. So, a person does not need to be in an uncomfortable or unnatural position for a long time, bend over for a long time. He retains his posture, the likelihood of developing pathologies of the musculoskeletal system decreases.
Optical magnifying systems help you perform precise and targeted manipulations. They are increasingly used in dentistry and implantology. And for dentists-restorers and orthodontists, they are simply irreplaceable.
Magnifying glasses are also irreplaceable when modeling, when you need to work with small objects of all kinds of shades.
The advantage of magnifying binoculars is that they can be used by people with visual impairments. They are suitable for simultaneous use for myopia, hyperopia. In magnifying devices, already rejected parameters must be taken into account.
Why do we need it?
The device is not intended to be worn at all times. It should be used in situations where it is impossible to consider something without his help, or you need to do painstaking work. This can be reading indistinguishable text, some types of needlework (for example, embroidery with black beads on a dark background), minor watch repairs, jewelry work, fine engraving, manual assembly of electronic devices and microcircuits, and something else like that. For a person with excellent vision, this is an indispensable assistant, but they are also suitable for problematic visual acuity. Visually impaired people may wear the device over their glasses or contact lenses.
At the household level, magnifying glasses will allow an elderly person with low vision to easily thread a sewing needle, see a doctor's prescription, read the instructions for the medicine, replace the battery in the watch and even pull out an accidental splinter without calling anyone for help. At the same time, the magnifying glasses are firmly held on the face and do not fall off when tilted or when the head is turned to the sides, and the hands remain free to perform various operations.
What to consider when choosing
There are different types of devices, each of which differs in its design, purpose or cost. Magnifiers can be made specifically to perform one or several processes at once, therefore, when choosing a product, several factors must be taken into account, for example, depth of field, focus, material from which it is made, field of view and other equally important factors. Now we will consider each of them separately.
The real benefits and harms of magnifying glasses
Magnification factor
This is the name of the ratio of the frame diagonal to the maximum allowable focal length of the magnifying glass. Depending on the needs for which you need a magnifying glass, the magnification factor may be different. For example, when working in a repair shop, where you have to deal with small parts every day, as well as in jewelry workshops, maximum multiplicity is required.
It is necessary to take into account the multiplicity of the increase in points
Cover material
Another factor that must be considered when choosing is the surface of the lens. The fact is that the glass can be coated with a special antireflection material, the task of which is to reduce the loss of light. This factor is extremely important when working in rooms with low lighting levels. Such products cost an order of magnitude higher than conventional ones, but their efficiency when working in low light conditions is much better.
The lenses of the glasses can be coated with a special antireflection material
Depth of field
This is the distance to the farthest or nearest point, within which the focus is not lost. It should be noted that as the power of the magnifier increases, its depth of field decreases proportionally. Therefore, the choice of depth of field directly depends on how the magnifier is used.
As the power of the magnifier increases, its depth of field decreases proportionally.
Focal length
This concept means the maximum allowable distance between the lens and the eye, at which the person's field of view does not decrease (its full coverage is maintained). As a rule, a longer focal length is required for a more comfortable use of the device. Therefore, the higher this indicator, the more you will have to pay for a magnifying glass.
What is the focal length of a lens
line of sight
This is the size of the area that is visible through the glass of the magnifier. With increasing magnification, the diameter of the lens and, as a result, the field of view, may decrease. For example, when choosing a magnifying glass with a 10x magnification, the field of view, measured in centimeters, will be 1 cm, and with a 5x magnification, it will be about 3.5 cm. Therefore, when working with relatively large surfaces, it is recommended to use magnifying glasses with a large field of view, that is, with a low magnification.
The field of view is important to consider when choosing magnifying glasses.
Working distance
This is a value that determines the distance between the object under study and the magnifying glass, therefore, you need to select the working condition of the product based on the type of work that you will be doing in the future. If your job involves the use of additional tools, it is recommended to choose a product with a long working distance for maximum comfort. This will provide a lot of room for further manipulation. When working with small objects that need to be viewed in close-up, a magnifier with a short working distance is required.
What will determine the working distance
Amount of elements
In specialized stores, you can buy magnifying glasses with a different number of lenses, so before buying you need to decide which magnifying ability you need. For example, for high magnification, several lenses are installed in loupes, and to achieve a small magnifying power, one lens is sufficient. Therefore, if you need magnifying glasses exclusively for reading in small print, then there is no point in buying more powerful lenses.
Decide in advance on the required increasing ability
Binocular magnifier with illumination