The peephole has long been the same necessary accessory front door like the castle. It is one of the simplest and most affordable elements to ensure our safety. The door peephole makes it possible to protect yourself from visits by unexpected or unwanted guests. In addition, it allows you to assess the situation on the site in front of the door in case of any problems.

Classic door peephole

design

The design of a standard door peephole is simple:

Lens - located on the side of the platform in front of the entrance and provides its overview;

Eyepiece - located on the inside of the door;

Lenses tube;

Nuts - outer and inner.

The largest view that a convex outer lens has is considered to be 180º. But due to the fact that the picture along the edge is slightly blurred, many manufacturers began to produce eyes with a viewing angle of 200º. When using such a device, you can get a high-quality, clear image of the area in front of the door within 5 m.

The length of the peephole depends on the thickness of the door:

30-50 mm - standard;

55-100 mm - elongated;

From 100 mm - extra long.

Standard devices usually have 4 lenses, but depending on the length of the peephole body, their number in it can be different - from 3 to 15 pieces.

Extra-long and extra-long eyes are used for doors with various decorative coatings. Most often used standard devices... They are quite enough for ordinary metal or wooden doors.

In order to be able to discreetly approach the peephole, it is equipped with curtains that do not let light through from the apartment.

material of manufacture

The body of the peephole is made of metal or plastic. The first option is more expensive, but will last much longer. The eyepieces of the device can be made of glass or plastic. The latter are more resistant to damage, but they can fade over time and the image will lose clarity. Metal models with glass lenses are more expensive than their plastic counterparts, but this is justified by their quality and reliability. There are bulletproof and shockproof eyes, but these properties of the products, of course, are reflected in their price.

installation of door peepholes

It is not difficult to install classic door eyes - at a height that is convenient for all adult family members, you need to stick masking tape and make markings. Then from both sides door leaf drill. The hole must match the diameter of the optical device housing. Eye tip with external thread It is inserted into the hole on the outside of the door and is tightly screwed on from the inside by the viewfinder with an internal thread.

Types of door eyes

In addition to the usual standard peepholes, there are modern products that make it as easy as possible to observe the site in front of the entrance to a house or apartment.

panoramic door peephole

Panoramic door viewer is a special model, the lens of which is divided into two lenses. They have a wider horizontal light receiving angle and do not require very close proximity to the eyepiece. The panoramic image on it can be seen from a distance of two steps and it is not necessary to stand directly in front of the peephole.

Installing a panoramic door peephole does not take long. Each such device comes with a template with the necessary notes. It is glued to the outside of the door at the required height and a hole is drilled in its center using a drill. Then, with a Ø3 mm drill, four more indentations (5 mm) are made at the indicated marks. The outer cover of the peephole should fit snugly into the prepared holes. A peephole with a clamping ring is inserted from the inner side of the web and is connected with clockwise turns to the outer part of the device.

Peephole periscope

The eye-periscope differs in that its eyepiece and lens are located at different heights. Mirrors are installed inside the body of such devices, due to which light transmission occurs. Such devices are very convenient for families with children. Its components can be located both at the bottom of the door and at a normal height, convenient for an adult.

d war peephole

The double peephole is installed on two doors - an external and an internal one. Both parts are located on the same line, which allows you to see the visitor without going out to the second sash. The image quality depends on the distance between the doors. It is desirable that it does not exceed 2 cm.

video-eye

The video peephole works on the principle of a conventional hidden video camera, but differs from it both in purpose and in characteristics. Ideal for confined spaces staircases... The video peephole is equipped with IR illumination, which provides a good image even in the dark.

Signaling occurs in two ways:

Via the UHF radio channel - the video signal is converted into a radio frequency TV signal using a television signal transmitter;

By cable - to the input of a monitor or TV.

A door peephole with a camera is installed on the canvas in the same way as a conventional classic peephole. When installing, keep in mind that the camera should not come into contact with metal. There are color and black-and-white video eyes. But the second option is preferable - such a camera has a higher light sensitivity.

Electronic door peephole

The electronic door peephole has recently appeared. It fits any door and fits in place of a regular peephole. The outer part consists of an infrared LED, a light sensor and a bell. With the help of a plate and screws, it is attached to the inner side of the door, the ribbon cable is connected to the indoor unit.

When you press the bell, the LCD screen turns on, displaying what is happening on the site. It can be noted that the viewing angle of such a device is slightly less than that of a conventional peephole. But it takes photos or videos that show the time and date of the visit - they are saved on a flash card. The door peephole with a camera is powered by AA batteries, so its installation does not require much effort.

By purchasing a peephole, the price of which is 30-50 rubles, you can be sure that it was produced in China or Belarus and, most likely, it will be a plastic product, and it will last only 2-3 years. There are also more expensive models of Belarusian, Russian, Spanish and German manufacturers on our market. Cost of devices with additional functions- panoramic, double, shockproof, bulletproof, etc. - starts from 1000 rubles.

The front door is a means that separates the personal space inside the house from the outside world. The thicker and stronger the door, the more reliable its protection. However, often the inhabitants of the house just need to find out what is happening behind the door, for example, if someone calls or any extraneous sounds are heard behind it. The most in a simple way to control the situation is to install a peephole. In the article we will consider the types door locks and how to install them.

The modern peephole did not become widespread until the 1960s. Its founding father is considered to be the American scientist, writer and inventor Robert Wood, who in 1906 invented the wide-angle fisheye lens.

However, it took quite a long time before his invention received well-deserved fame, distribution and application in everyday life.

Today you can buy door eyes that are different not only in shape and size, but also in functionality.

Door peephole design

The standard door peephole construction consists of:

• lens aimed at an external object (lens);
• outer rail;
• clamps on the sides of the lens;
• peephole body;
• inner nut;
• lens directed inward (eyepiece);
• damper.

Depending on the length of the body of the peephole, from 2 to 15 lenses can be located in it.

How to choose a door peephole?

There are several main factors to consider when choosing a peephole.

The first and foremost factor is the viewing angle.... The higher this indicator, the higher the level of security, because not only the person's face at the door will be visible, but also the space below and on the sides, which in today's, unfortunately, too criminal world, is very useful.

• The optimal viewing angle is 180 °, although manufacturers often make the angle a little more than 200 °, in order to remove distortions along the edges of the view, the working spectrum will eventually remain the same 180 °.
• Another trick that manufacturers use to increase the angle of view is to bring forward the focus of the lens. This design provides a greater view of the space.

The next factor that determines the choice of the peephole is the width of the door.... Depending on this, one of the options for the eyes is selected:

• standard (if the door is 30 to 55 mm thick);
• extended (if the door is 55 to 100 mm thick);
• long (if the door is more than 100 mm thick).

The most common are standard sized eyes, they are suitable for any modern metal or wooden doors. Width adjustment is made using the thread, which is on any peephole. However, if the door is to be insulated from the outside or from the inside, the usual length of the peephole may not be enough.

Tip: When buying an extended or extra-long eyelet, it is important to pay attention to its optical characteristics, which should differ from the standard version. Unfortunately, many manufacturers, in order to reduce the cost of the final product, simply complete a standard peephole with a long rear nut, without changing the optical characteristics. These actions are fraught with a decrease in the viewing angle, as well as poor visibility of objects.

• In addition to the width of the door itself, it is important to consider the width of the diameter of the peephole. The larger it is, the higher the aperture ratio of the lenses installed in it. A high aperture ratio allows you to see objects more clearly, while it is not necessary to come close to the peephole, the external space will be clearly visible from a distance of 5-7 cm from the peephole, while maintaining a wide viewing angle.
• The only additional comment on the wide diameter is that in the future it will no longer be possible to replace it with a narrower one, because the hole for it is correspondingly wider than the standard one.

The material from which the peephole is made, is perhaps the determining factor in the final price of the product. There are two main materials for the body of the eyes: metal and plastic. The metal is more durable and resistant to external influences, the plastic may deform or crack, for example due to temperature extremes.

There are also different materials for lenses - plastic, ordinary glass or spectacle optics.

• The main disadvantage of plastic optics is its fragility. It tends to become cloudy and deformed over time. In addition, plastic collects static electricity and attracts dust. All these factors lead to a quick, already in the second or third year of operation, loss of image clarity.
• Glass does not have such problems, but it is more fragile compared to spectacle optics. The only drawback of glass optics is its higher price compared to plastic. Although, strength and durability will pay off the costs with interest.

Door eye latch

The valve has become integral element peephole, it performs both a passive safety function - so that it is not visible from the outside whether someone is in the house or not, and an aesthetic function - light from the outside does not penetrate into the room.

• It also allows the observer to freely approach the door and choose whether to open it to people outside. There is always someone who simply does not want to open the door, without any objective safety factors or good manners.
• Sometimes the role of the shutter is performed by mirror coating of the objective lens. It is quite popular, since it does not require additional internal elements of the eye, however, the disadvantage can be called the reduced brightness of the image.

Installing the door peephole

Installation is quite simple and does not require any special skills. If the door does not have a special hole for a peephole, it must be drilled.

• To do this, a place on the door is selected where it will be located, masking tape is glued and markings are made.
• Then a hole of the required diameter is drilled on both sides of the door.
• A tip with a lens is inserted from the outside of the door and tightly screwed on by the viewfinder from the inside.

Types of door eyes

• Panoramic peephole. Its distinguishing feature is a lens divided into two lenses. Thanks to this design, the lens receives a greater luminous flux and gives a panoramic image, in order to see which it is not necessary to stand directly opposite and close to the peephole.
• Bulletproof peephole. The functionality is in the name, provides increased security.
• Secret peephole. It is usually disguised as nails in door trim. As a rule, this is a construction of a micro-video camera on the outer door and a receiving device on the inside.
• Double door peephole, allows you to view the space without opening the inner door. It has two parts.
• Peephole periscope. In this type of eye, the lens and eyepiece are at different levels. This type is very popular in families with children, as it makes it possible to arrange the components so that the eyepieces are at a level that is comfortable for an adult and at the height of the child.

Video-eye

It is worth dwelling on this type of eye in more detail, since this model is gaining more and more popularity from year to year, which is not surprising in the era of technological progress.

The principle of operation of a door peephole with a camera

At one end, a video camera is installed, usually small or micro-sized, built into the door. It transmits the image to the receiving monitor. The picture can be transmitted both continuously, in real time, and on demand.

What is important to consider when choosing a video eye?

• As with a conventional peephole, the angle of view is of prime importance. Thanks to technical solutions and telescopic attachments, this issue is in most cases perfectly resolved, and video eyes give an excellent full overview territory in front of the door.
• Others no less important factor is the sensitivity of the peephole to light. The higher it is, the better the peephole "sees" in poor lighting conditions. You can clarify this point in technical characteristics a camera built into the door surface.
• According to their device, video eyes are divided into case and frameless. The former are more reliable and durable, while the latter are cheaper and easier to install.
• Video surveillance can be organized according to one of the following two schemes:
  1. the signal is broadcast over a radio channel in the UHF range, using a television signal transmitter to receive it on a TV.
  2. the image is transmitted via a cable directly to the low-frequency output of a monitor or TV.

• It is better to entrust the installation of the video eyelet to professionals, since certain knowledge and skills will be required to adjust the signal. Also, you may need to work on laying the cable in the apartment.
• If there is a desire or need, in addition to video surveillance, to be able to observe through a standard peephole, it is worth considering the option of installing a hidden camera with a lens. Of the advantages, it is worth noting the round-the-clock recording of the territory in front of the door and the ability, if necessary, to view this material.

Electronic wireless door peephole

An electronic eye is a type of video eye, in the sense that the image is also transmitted to the monitor and there is no direct observation through the eyepiece.

However, there are very significant differences:

• The electronic peephole consists of a doorbell and video camera, which are mounted on the outside of the door, as well as an LCD display for the inside. When you press the call button, the device activates the liquid crystal display, takes a photo and starts video recording. The device is equipped with a slot for memory cards, in the settings you can change the parameters of photo and video recording.
• An electronic peephole allows you to see what is happening outside at any time, for this you need to activate the LCD display by touching and select the appropriate menu section. It can record video even in low or no light, for this you need to select the use of infrared illumination in the settings.
• Unlike video peepholes, the installation of an electronic peephole is simply elementary, the place where the standard peephole was previously installed is used as a hole, no additional drilling work is required in this case. No wires or other connections required. This device is powered by batteries. And its cost is relatively low.

As a completion. The most important thing in a room is its comfort and safety, modern door peepholes are able to satisfy the highest demands of consumers, but no matter how good it is, and no matter how strong the door on which it is located, the main factor is the common sense and caution of the residents.

The peephole, as well as when choosing and installing it, should be guided by the safety and conditions of maximum view of the site, taking into account the material of the entrance door itself. The dear ones with the maximum viewing level have a 180-degree angle, which allows you to view the area all the way to the rug under yours. The panoramic viewing angle of the cheaper options is about 120 degrees and does not give any particular advantages either in efficiency or in the quality of viewing the site.

Today, video eyes with a built-in camera connected to a computer or laptop like a standard webcam are quite popular.

If you are going to buy and install a door peephole yourself, do not forget to take into account the thickness of your door leaf. You can easily choose the length of the eyelet body and its diameter from a wide range. Remember that the length of the eyelet can be additionally adjusted using the threads on its body.

Traditionally, door eyes are made of plastic and metal, while their optics are glass and polymer (as well as plastic). The advantages of glass optics lie in a better image quality, resistance to mechanical damage (scratches and dust), as well as in the absence of clouding.

The eyes, the most optimal in terms of their qualities and characteristics, have a metal body and glass, but their cost is higher than that of budget models door.

Installation in the door

The installation of a peephole in the door is carried out taking into account the height of the owner of the apartment. It is necessary to mark the center on the door, based on the desired height, and mark the resulting mark with an awl - this will not slip. Also, before marking the installation site, glue a strip of adhesive tape on the selected area of ​​the door leaf. Now you can place notches without fear of ruining the door lining.

To prevent chips from forming in the door when drilling, the marking of the future hole is performed on both sides of the door.

Having chosen the diameter of the drill (slightly larger than the diameter of the threaded element of the eyelet), start drilling the marked holes on each side of the door, plunging the drill into half the thickness of the door leaf. Unscrew the peephole and install the male thread on the outside and the female thread on the inside. After the holes are drilled, screw the peephole into the door, tighten it with the splines and enjoy a safe view of the staircase.

Realities modern life are associated with constant concern for their own safety and the safety of those close to them. Despite the measures of protection of state law enforcement agencies, the risk of being attacked remains. No exception and own house or apartment. There is a widespread opinion: the thicker the door, the higher the safety of the apartment. But extraneous noise behind her, knocks, the sound of a doorbell require visual observation of what is happening, an assessment of the potential danger. It simplifies the solution of the issue by installing a door peephole, which will provide an adequate view of the staircase or courtyard. If he is absent in installed door the owner just needs to choose the appropriate one by installing it on their own.

Door with peephole

General information

The design of a classic doorbell includes a body (plastic or metal), two lenses (outer and outer), outer rails, decorative fastening nuts and a protective flap. The main role is given to the quality of the lens. Plastic or optical glass is used. Plastic lenses are characterized by a low cost, but the disadvantage is a short service life, clouding as a result of dust accumulation caused by static magnetic field... Glass lenses have more high rates transparency, clarity of perception of the visual image, service life is characterized as significant, but the cost is an order of magnitude higher than plastic.

Peephole appearance

Selection of the door peephole

The stores offer a wide range of products for this purpose. To determine which one is necessary for the owner of the premises in each particular case, you can familiarize yourself with the types presented below:

• standard simple, cheap to purchase, provide a simple overview of the territory;
• panoramic, characterized by a wider and better view;
• bulletproof;
• hidden, placed in a decorative element, as a rule, equipped with a micro-camera;

Hidden peephole

• spaced, used in the presence of two doors, have two parts, viewing from the inner door, and the camera from the outer;
• periscope type, while the parts are on different distance in a vertical or horizontal plane;
• video peephole, installed with an additional alarm and image viewing unit, often provides for the function of opening the door using a magnetic locking device.

Eye angle

Factors accompanying its operation in optimal mode are also important when choosing a door peephole:

• the angle of the visual view, while at least 180 degrees is considered optimal;
• the length of the lock structure - should ensure comfortable installation in the door leaf;
• the constructive diameter of the eye, the larger, the better the light transmission of the image;
• material.

Door peephole installation

Installing a peephole in metal door it will not be difficult for a person with an initial level of knowledge of plumbing and the ability to use a household electric tool. The order of work is as follows:

Alternative surveillance systems

Manufacturers applying modern technologies are constantly updating their line of surveillance devices. Remarkable and worthy of attention are considered the installation of electronic systems that perform the functions, along with the main one, fixing on the control unit of persons approaching the door of the room, a full recording of the picture of events taking place behind the front door, and many others, including an infrared image. But do not forget the fact that even in the case of installing a system with additional elements power supply - it ends up sometime, and simple optical door eyes do not need them.

Video surveillance system

How to correctly install the door peephole in a metal door can be understood by watching the video material, while receiving recommendations and instructions from the master who has repeatedly carried out these works.

Installation of a peephole on an iron door

What kind of visual observation system to place on the entrance metal door depends on the degree of its security and the requirements of the owner of the premises for such an opportunity, while the financial security of the events seems to be an important component - the more complex the system, the more expensive the purchase.

In contact with

Comments (1)

Unfortunately, there are no comments or reviews yet, but you can leave your ...

Nowadays, locks are produced in almost all countries of the world under brands of various manufacturers. How to restore a metal door. This procedure assumes the return of the original appearance and texture as the damaged surface of the doors themselves Borisovo, Novogireevo, Nagatino, Saburovo, Mitino, Maryino, Maryina Roshcha, Lyublino, Lianozovo, Lefortovo, Kolomenskaya, Kuntsevo, Kuzminki, Krylatskoye, Kosino, Konkovo, Kozhukhovo, Ivanovskoye, Zyablikovo, Brateevo, Vykhino, Zhulevia , Running, Tsaritsyno, Avtozavodskaya, Cheryomushki, Varshavskaya, Kashirskaya, Domodedovskaya.

Why call a master if you can cut in the peephole yourself.
This is the opinion of most of those who have ever held a locksmith or carpentry tool in their hands, but not as a specialist, but as an amateur.
If someone at least once had to deal with this issue, then he will definitely say that let everyone go about their business.

How easy or difficult it is to put a peephole in the door if there is no experience.

To begin with, let's figure it out and clarify which door and what material it is made of.
If the door is wooden, then this is one thing, but if it is metal, then this is quite another.
At first glance, it may seem that it is more difficult to cut a peephole into a metal door. But here just everything can be the other way around.

Difficulty peephole in a metal door can only consist in the strength of the metal, and everything else is likely to go like clockwork.
Yes, drilling a hole in a thick iron is not easy, but who said that the door is made of thick steel.
As a rule, ordinary entrance doors are made of metal no more than 2 mm thick.
Making a hole for a peephole in such a thickness is not a serious obstacle for a person armed with a modern tool.

There is one small, but very important nuance.
Drilling a hole in metal without experience is extremely dangerous both for the door itself and for the master.
At the exit, the drill may jam and break, possibly causing serious injury or injury.
A metal rupture can also occur and instead of a neat hole
the hole will be like a daisy.

It will not be superfluous to add and warn if the door has decorative trim.
Failure to comply with all the necessary finishing materials when inserting the peephole may suffer, and then the cost of facing will also be added.
In a word, for such an insignificant procedure as an insert, it is worth preparing thoroughly, and if there is the slightest doubt about the positive conclusion of this issue, it is better not to take up the work.

Mytishchi, Dzerzhinsky, Belaya Dacha, Mosrentgen, Lyubertsy, Kotelniki, Reutov, Khimki, Dolgoprudny, Butovo, Railway, Odintsovo, Kurkino, Domodedovo, Barvikha, Korolev, Peredelkino, Jubilee, Balashikha, Shchitnikovo, Zelenograd, Kosino, Nemchinovka, Gas pipeline , Krasnogorsk The company provides services:
installation of locks, insertion, replacement of larvae, repair of doors, opening.

Of course, most punching locks are always cheaper, but in the posmotret.neobhodimy list, you will need to insert the Balashikha castle, Belaya Dacha, ruins, Vidnoe, Dzerzhinsky, Dolgoprudny, Zhulebino, Zelenograd, Korolev, Koshino, Krasnogorsk, Lyubertsy, Mitino, Mytishchi, Peredelkino , Odintsovo, Reutov, Shcherbinka, Jubilee

One of the cheapest, but quite reliable ways to defend against intruders is door to door.

A built-in eyepiece allows you to see what happens during landing, to "identify" your visitors and, if necessary, view documents that are presented without opening the door.

These products are very widespread in the market. There are very cheap and very expensive models. Let's try to find out what makes each other different and whether it makes sense to pay more.

The first products of this kind that appeared in our country could not provide complete safety.

The attackers learned to simply "trick" them. To avoid gaze, it was enough to press against the wall by the door or sit on the threshold. This feature is the result of the small viewing angle of cheap products.
Experts recommend mounting lugs which looks like 180-220 degrees. This is better, better. You also need to consider the fact that the edges of the image are almost always blurry.

How to install pefoles in metal doors

It looks like some areas come into view, but what happens there is almost impossible.

Maximum visible angle without blur panoramic eyes. This is because the lens of the product consists of two lenses - left and right. Plus, you don't have to reach the door and press your eyes to get the shot.

The distance at which polling is possible depends on the model and can vary from one step to one and a half.

Before buying and trimming the case through the door, you need to understand what features to consider when choosing.
From the point of view, which he has already defined, we are now talking about materials.

The body of the product can be made of plastic or metal. The former is cheaper, but not very strong.

Metal models are much more reliable.
Lenses are the main part of the product. Their quality and quantity depends on the clarity of the image. They can be made of plastic glasses, glasses or glasses.
The first is the cheapest, the last is the most expensive. Plastic lenses initially provide the luminous flux.

They are also capable of building up static electricity, which attracts dust particles. And the material itself eventually becomes destructive and loses its transparency. In short, after a few years, the images transmitted by such lenses become blurry and unclear.
More Recommended tie with lenses from ordinary glass.

AND the best way Are products made from special glasses for glasses. It fully transmits the luminous flux and is characterized by increased power.

Of course, such models are the most expensive.

But they will serve regularly for many years.

Shielded eyes can be used for objects requiring serious precautions. Inside such products there is a layer of transparent glass-proof glass. This does not affect image quality in any way and can stay the focus of attention with a short firearms(pistol).

And the last factor that can influence the choice is the length of the eyelids.

Standard models are designed for doors with a thickness of 35-50 mm, but the products also have a length of up to 100 mm.
Eyes for thicker doors in retail store rarely accepted. Most often they need to be ordered.


Summing up, we can say that The best way to ensure our own safety - create a panoramic eye.

Higher comfort and viewing angle allow you to receive only electronic models with a video camera and an LCD display, but their price is much higher.

Related Topics:
Looking at the wooden door
Around the door
It's even cheaper to replace the boss at the door
Installing an eye in a metal door
In our country, this mentality: people first do and then read the instructions.
How to Attach a Door Lock to a Metal Door
Order a selection of spare parts for professionals

Entrance doors are the border between the personal space in the house and the outside world, and the stronger they are, the stronger the feeling of comfort and security, but sometimes there is a situation when the owner needs to see and hear what is happening outside his apartment. The optimal solution this problem is the installation of a door peephole, the history of the creation of which goes back to the distant 1906.

It was then that Robert Wood invented a wide-angle lens called "fisheye". Gradually, the opening was improved until a modern version of the door peephole was obtained. Today, the door peephole can be purchased by choosing from the entire assortment strictly according to individual preferences in shape, size and functionality.

How the door peephole works

Design modern model the door viewer consists of the following parts: two lenses fixed on the sides for comfort.

One of which is aimed at an external object, and the second inward is the eyepiece. An outer rail and an inner nut are used for fastening. The lenses are hidden in the body, and the number of lenses that can be installed there depends on its length, usually this number varies from 2 to 15 pieces, on which a shutter is located on the inside, covering the eyepiece.

Types and criteria for door eyes

When buying a certain model of the eye, it is worth considering several basic criteria so that any situation cannot be taken by surprise. As a guide through the door, the viewing angles play important role, and the higher they are, the lower the level of risk.

Thanks to the enlarged field of view, you can observe the maximum space in all directions and everything that happens on it. The optimal viewing angle is 180 °, but quite often manufacturers expand it to 200 to optimize image quality and eliminate distortion in the field of view.

The trick that most manufacturers resort to is extending focus to provide coverage more space... The next factor is the width of the door leaf, on which the peephole model depends: standard (for a door with a thickness of 30-55mm); extended (for doors 55-100mm thick); long (within 100mm).

The most common model is considered to be standard eyes, which are installed in modern samples of metal and wooden door leaves.

For adjustment to the individual door width, a thread is used, with which you can fix the desired position. It is worth paying attention to the insulation, if, of course, it will be used in the near future, because it will add "width", and the calculated length of the standard eyelet may be insufficient.

The secret of a successful purchase of an elongated or extra-long door peephole lies in its optical characteristics, which differ from standard options. But most manufacturers, in order to save materials, prefer a complete set of conventional, elongated nuts, while not taking into account the reduction in image quality.

The diameter of the eye also plays an important role, while the coefficient of utility is higher than it is larger. Thanks to the aperture of the lenses, the clarity of the image is increased, and from a distance of up to 7 cm from the eyes it will retain its properties of a wide viewing angle. The only nuance-minus in eyes with a wide diameter cannot be replaced without a trace on models with a smaller diameter.

Peephole materials

The most popular material for making door peephole there are still plastic and metal, which ultimately affects the cost of a particular model.

Here you can do without unnecessary comments, because many will agree that hardware durable and resistant, which cannot be said about plastic, which is prone to deformation and cracks.

Installing the door peephole

The same goes for the lenses themselves. It is more rational to purchase a peephole with lenses made of ordinary glass or spectacle optics, which, unlike plastic counterparts, will not become cloudy or deformed and, if handled carefully, will last for quite a long time, having recouped its cost.

Door eyes

1. Task

The door is intended for visual observation of confined spaces and is usually installed on the entrance doors of private and public premises.
The eye of the neck should give a clear picture of objects at a distance of 0.5 to 5.0 m under lighting and lighting conditions.

Special door eyes can also observe the room through double doors(eye for double door), security control protection (eye secret) observer (bulletproof eyes and eye-periscopes), etc. Doors are often duplicated by a television monitoring system, the operation of which is less reliable.

second

Neck device

Okance's design may be very different, but in everything that is the small eye of the eye (the lens is rotated around the observer) and the lens (the lens facing the observed object). There may be other lenses between the eyepiece and the objective. In addition, the optical part of the most attractive structure includes: a housing having an outer and an inner nut. (Fig. 1).

The total number of lenses in the doors ranges from 2 to 15.

Sometimes mirrors (eye-periscopes) are used in the doors.
The most common design of the optical system is four lenses, which provide an angle of 180-200 degrees. without significant image distortion (Fig. 2).

3. Consumer properties of the neck of the eye

Neck thickness is one of the main parameters of the eyes of the cervix. According to this parameter, the eyes are divided into three groups:
- standard eyes (neck thickness 30 - 55 mm);
- oblong eyes (neck thickness 55-100 mm);
- Extremely long eyebrows (door thickness over 100 mm).
Most of the manufactured doors are "standard". These eyes can be placed on modern standard wooden doors and most metal doors.
If the door is finished with various solid and soft materials, the length of "standard" eyes may not be sufficient.

In this case, it is necessary to install "long" or "very long" cervical eyes.

Cutting eyes into metal doors or low magnification people problems

Tilt angle the eye of the neck is shown in FIG.
The ideal viewing angle for the neck is 180 degrees. Large when viewed, is achieved by "moving forward" at the center of the lens. This provides a complete view of the door area.
Keep in mind, however, that image distortion often occurs in the door view at the edges of the field of view. Therefore, most wide-angle eyes are made with an overestimated viewing angle of -200 degrees, which reduces distortion in the "working" sector - by 180 degrees.
When choosing an “elongated” or “very long” neck, we must not forget that these eyes must have different optical properties than “standard” eyes.

This is not always noticeable. Some manufacturers produce "oblong" eyes, fill the "standard" eye with an elongated rear nut without changing the optical design. Installing an eyelet with such a bundle on a wide door leads to a sharp decrease in the viewing angle.
When choosing a drawer, you should check it from a visible angle as much as possible by unscrewing the inner eye, i.e.

maximizing the parameter "door thickness".

3.3. Construction of crushers.

Nowadays, almost all of your eyes are fitted with blinds. Only cheap eyes are produced without a choke.
The damper does not emit light from the apartment and allows the observer to unclearly approach the eye and observe covertly.
Basic requirements for flap design. Loputa Mora:
- close the eye opening;
- Easy and quiet opening and closing;
- They dont have sharp corners;
- Do not touch the door or door leaf while driving.
The latter requirement is often not foreseen in the design of modern and openings leading to difficulties in turning the valve, damage to the door surface, door trimming soft and, ultimately, damage to the flap.

materials that are used in the manufacture of cervical eyes largely determine the selling price of the eye.
Below is a list of the materials used to shape the eyes of your neck.

The list is made after the price increase for the eyes:
Glasses with plastic optics:
1. Body and two nuts (external and internal) - plastic;
2. Body and inner nut - plastic, outer nut - metal;
third

The body and two nuts are metal.

Glasses with glass option:
4. body and two nuts (external and internal) - plastic;
fifth

Body and inner nut - plastic, outer nut - metal;
6. The body and two metal nuts.
On the other hand, the metal eyes are different, one in the shape of a metal,
processing method and type of coating.
The cheapest is the neck from the silumin molding, which is usually just a cover mat covered in paint.
Treated eyes have better appearance and higher costs.

With the same types of outer coatings, non-ferrous metal eyes are more expensive than ferrous metal eyes.
The appearance of the eye largely depends on the type and quality of the coating. And very often around lined ferrous metal, it looks better than the eye color in bare metal. Thus, the eyes of the brass door of the eye "gold" darkens over time, and the door made of steel, plated with chrome, and then titanium nitride ("gold") does not darken and in fact scratches are not affected.
The eye optics are divided into glass and plastic.
On the other hand, optical glass is made of optical, spectacular, and ordinary glass.

If the properties of optical and glass bottles not much different, ordinary glass lenses are more fragile.
Plastic lenses are not afraid of impacts, but they have many important disadvantages: they are prone to scratches; due to electrolysis and the formation of static electricity, they attract dust to themselves, and, finally, most plastic materials eventually turn yellow and lose transparency.

Practically the second - third year of working with plastic optics, the visibility in these eyes deteriorates.

3.5. Mirror removal The objective objective lens acts as a pin, and the door valve cannot be installed in the presence of a tick.
If, however, there is a light source behind the neck, it will be visible from the outside in the form of luminous points. This means that in this case, the mirror lining does not fully realize the function of the flap.
Another defect in atomization is the smaller aperture, the "mirror" of the eyes, because

part of the luminous flux is reflected by the spray.
However, the door is a "mirror" in a simple requirement due to its ease of use (no need to open and close the flap) and look better.

3.6. I recieved it increase opening on the neck it is allowed not to see it only in poor lighting, but it allows the viewer to look into the eyes of a door that is far from it (up to 5-7 cm).

Sv You do not need to move your eyes close to the eyepiece. At the same time, it retains excellent viewing power.
In the eyes of an enlarged lens, the lens of the larger diameter is structured like a normal eye and therefore slightly larger diameter body of the eye.

Blowout protection The eyelets on the outside are equipped with most of the manufactured nets. Only a few cheap eyes are missing.
The design solution for such protection can be very diverse, but the most effective way is to install different holders on the outside eye.

Doors for special purposes.
Stable doors The eyes provide protection for the observer with short-tube weapons. These eyes are tested for protection against the following weapons: "Nagant" TT "Makarov". The observer is also an eye periscope, which is made on the principle of a periscope and submarines, the eyepieces and lenses of which are not coaxial. Because a shot outside the scope of the lens passes the observer's head.
Window doors can be fitted with bulletproof eyes and periscopes.
Currently, secret eyes are being created, the design of which was developed in the middle of the last century by the special services. different countries for secret surveillance.

The design of these eyes is very different, but common feature- wide view and very small diameter (0.5 to 0.8 mm) of the outer lens. The body of the eye is usually in the shape of a pencil and is in the wall (or in the door). At the tip of the "pencil" there is a lens that looks and at the level of the outer surface is hidden in the background image.

On the surface of a wooden door, the lens is masked under the head of a nail with a diameter of about 1 mm. In this case, as a rule, a number of real nails with similar heads are packed.
Eyes for double doors They are designed so that they can be observed through two doors at once (inside and outside) with a regular eye on the outside doors and on interior doors, which are opposite, attached to the optical device by eyepieces.

The system "optical block + peholo" allows you to view the room for external doors without opening the doors.
There is also a demand for large diameter doors up to 50 mm ( "Door-panoramic device"), which uses blurred glass instead of an eyepiece.

On this glass, like on the screen, the image is oriented, which allows you to view it remotely without approaching the door.

4. Door eye manufacturers

In our country and abroad, the main manufacturers of the door neck of the opto-mechanical device and the factory for the production of precision mechanics.

The production and installation of standard cells is often handled by small businesses buying optical devices from optical devices.
Door sales are widely sold on the Russian market: Russia, Belarus, China and Spain.
The widest range of neck eyes is produced in Russia (up to 100 objects).
Russian plants produce only standard eyes (Vologda, Novosibirsk, Cheboksary, Krasnogorsk, Azov, Moscow, etc.).

There are about 20 items in total. These eyes are usually equipped with glass optics, but they do not have the good design and loss in price, as in the eyes of Belarus and China.
Belarus has a narrower choice of eyes than Russia, but in the production of standard cells it occupies a leading position, produces glasses with good ratio design and prices. Glass production is concentrated in the cities of Minsk, Vileika, Lida and Gomel.
China produces very wide range cervical eyes, but only the cheapest low quality glasses are shipped to Russia, usually with plastic optics and no dampers.

In addition, lenses are often not properly adhered to the body with glue. The marriage rate between Chinese eyes is significant.
Spain in the Russian market represented doors, especially Amig products, which produce standard and oblong eyes with good design and at high prices, but often with plastic optics. The brass eyes of this company do not have protective coating and eventually black out.

about the materials of the company "World of Castles"

Entrance doors providing highest level security, heat and noise insulation, have one of the disadvantages: it is impossible to determine who is behind the door without opening it. And this is exactly what I want to avoid. You can fix the problem by installing a door strip with a special glass cartridge or by installing a case.

Select combs

The latter solution is much easier to implement.

Neck design

The first prototype device served as an observation slot that crossed the door.

The gap was closed with a latch, and the window pounded several times. Surprisingly, it is difficult to imagine such a design in a modern dwelling or home that an alternative to the top observation slot existed until the early 20th century.

The starting point was the creation of a special fisheye lens developed by the American scientist Robert Wood.

A feature of this is the transmission of an extended image of an external object to the observer.

The modern design looks like this: the body - plastic or metal, contains at least an eyepiece - observation aids and a target. There are latches on the case, because of which the eye cannot be unscrewed from the outside. Internal organization often equipped with a slider. Instead of the latter, a mirror coating can be used to prevent light from passing through the eyepieces so that the visitor does not know if they are looking or not.

The optimal viewing angle is 180-200 degrees.

In the first case, you get an image with slightly blurred edges. More than watching, without this flaw. But the diameter of the device is increasing at the same time. In the photo, the door is equipped with a small eye.

materials

The body of the device is made of plastic or metal.

Another option is more suitable for steel structures or solid wood.

The lenses for the device are made of plastic or glass.

In the case of highly reliable entrance structures, it is recommended to use an eye with an additional armored glass cartridge.

The material is capable of carrying a direct hit from a ball from a cannon (short trunk).

Special types of neck eyes

The video shows different types instruments: panoramic, periscope, hidden, and video cameras.

Door with video camera

A modern and expensive type of device.

The case diameter is standard, so it can be replaced instead of a conventional device.

Front door

At the same time, the new device is equipped with a wide-angle camera - color or black-and-white, which transmits the whole picture to a monitor or TV. An eye with a video camera is usually also equipped with its own monitor for monitoring.

The camera transmits an image of the visitor in real time, and if the owner of the apartment is absent, record the date and time of the visit, which allows you to accurately determine who visited the house and when. Since the device with a video camera reacts to traffic, it is registered not only by the guests themselves, but also by all visitors who have crossed the landing.

The camera eye can be successfully used to organize your own security system. The photo shows an example of a device with a video camera.

Overview How to choose cameras pefoles.

How to install a door peephole with your own hands - peephole review and video advice

Today it is very dangerous to open a door without seeing the person on the other side. Of course, it's good to hear a familiar voice, but as they say, it's better to see once than hear ten times.

Based on this, we can say that the peephole is just a necessity. The cost of such a device may be different, but affordable for everyone.

Preparing the door for the installation of a peephole

Every owner of his house will be able to carry out the installation of a door peephole with his own hands.

Topic: How to install a door peephole correctly?

Door eyes can vary in size, design, price. You can give preference to any peephole, the main thing is that the installation dimensions fit the thickness of the front door leaf. Although, most often, door optical devices can vary widely.

Announcement: How to install door trims

By the way, it is best to give preference to an eye with a field of view of 170 ° or more, devices of this type are called wide-angle.

In this case, the "guest" will not be able to cuddle up to the wall and hide from you. In addition, it is better if the outer lens of the peephole is made of glass, since plastic is scratched and less durable.

Door peephole installation

In order not to spoil the lining of the door leaf when marking it is on the outside, glue a paper strip at the required height, you can use masking tape.

On the strip, in any way convenient for you, it is necessary to mark the location of the center of the eye hole. Measure the bore diameter of the optical device, with a part with an internal thread. Next, select a drill of the required diameter, it should be 0.3 mm larger, ideally use a corkscrew or screw. You can use a small mirror, you need to attach it to the door leaf, at the slightest deviation of the drill, you will immediately see it.

Announcement: How to align the door threshold with your own hands

Do not drill through the door leaf, but in such a way that the center of the used tool protrudes outward.

Continue drilling on the other side to avoid gouging the veneer on front side doors. Unscrew the peephole into two parts, insert the first part with an external thread from the outer side of the door leaf, insert the second part of the peephole, respectively, from the inner side of the door, unscrew the parts. Tighten the peephole, for this use the slots on the inner frame of the device. In order not to break the screwdriver, it is necessary that the tip of the tool enters both slots.

A suitable thickness of steel plate can be used. This completes the installation of the door optical device.