At the design stage and installation of video surveillance systems, attention is paid to providing video recording in low light conditions. For the implementation of night video, different devices are used, among them an infrared spotlight. The most popular infrared LEDs used to create the backlight for cameras, they provide a wavelength in the range from 790 to 950 nm .
Today you can find various parts of the infrared spectrum that help solve certain problems. For example, infrared spotlights use devices with a wavelength in the range of 790-830 nm. For high-quality covert video recording at medium and short distances, use the parameter 930-950 nm. The most popular range of length that is used in night cameras is considered to be the limit of 850-900 nm. It has a sufficient detection range, and the radiation is almost imperceptible.
Key Features of Infrared Spotlights
The infrared floodlight should be selected according to the main features, among which:
- angle of illumination;
- radiated wavelength;
- effective range;
- power consumption.
If we are talking about the lighting sector, then we should consider the parameters of the angle of coverage, which depend on the lens of the device. The range also depends on the magnitude of the angle. With a smaller angle, the flow range will be greater, this also applies to detection. As a rule, external devices have a focused beam in the central sector. This intensity is reduced to almost zero.
An infrared-illuminated outdoor camera can work efficiently if the lighting angle is greater than or equal to the viewing angle. Different methods are used for this, one of the most effective is the use of several sources with different focuses. If you choose an infrared floodlight, then as an example in this case we can consider the MVK-81 device from BaitErg, which has a block of a pair of spotlights with interchangeable lenses. They guarantee a range of 40 m, and the angle of illumination will be equal to 30 °.
Reviews about the camera MVK-81
When choosing an infrared spotlight, you can pay attention to the model mentioned in the subtitle. Consumers purchase it for the reason that it has a reliable housing and is an analog camera that provides a color image. There is a lens inside, and the device itself is designed for use both indoors and outdoors. Users claim that the feature of this model is high resolution, as well as the presence of two modes “day” and “night”.
Detection Range Characteristics
Detection distance is the distance with which the device is able to detect unauthorized entry. The parameter depends on the power of infrared radiation and the sensitivity of the device. Detection range can be increased by adding new infrared sources to the device . After the saturation limit is reached, increasing the number of diodes will not allow to achieve a positive result. Based on the effective detection range, you should choose an infrared spotlight for video surveillance, which has external IP cameras and backlight, which guarantees the sensitivity of the matrix.
Flux emission characteristics
This indicator is quantitative and characterizes the intensity of the radiation flux; it falls on the solid angle. The parameter is expressed in Watts per steradian, which is as follows: W / Sr. It is important to consider that the length of the wave emitter is not so effective with the same radiation power with a short-wavelength, this is due to their low efficiency.
Reviews of technical solutions for infrared spotlights
When consumers choose an infrared spotlight, they pay attention to varieties of technical variations. Such devices are based on halogen sources, the luminous flux of which is blocked by a light filter. These sources differ in certain indicators, among them:
- increased range of lighting;
- wide power range;
- radiation wavelength limit from 730-850.
As for the power consumption, it can be in the range of 30-300 watts. But if we are talking about the average range of lighting, it should be mentioned that this indicator is 100 m or more. Consumers also note the main disadvantages, which are expressed in the minimum life and high price of halogen lamps.
PIK infrared spotlights can have solid-state light sources that use special diodes as a generator. The main advantages of using are:
- low power consumption;
- compact dimensions;
- high power
- insignificant mass.
Provision PV-LED30C Spotlight Reviews
If you need an infrared spotlight (cameras), then you can get a closer look at the features of the model, it was mentioned in the subtitle. This device can be used in open areas if it is necessary to provide illumination at impressive distances. The case is made of aluminum alloy, which, according to users, is a clear advantage. The backlight range reaches 30 m, and the angle of illumination is 30 °. The number of diodes is 6, and the wavelength is 850 nm.
Consumers note compact sizes. Dimensions are limited by the following parameters: 147 x 77 x 87 mm. The equipment weighs only 520 g, the case is made in black, and the device itself has a power ranging from 18 to 20 watts. Infrared illumination (spotlight) can be operated at a wide temperature range in the range from -40 to +60 ° .
Reviews of spotlights PIK-41 and PIK-42
In the first case, we are talking about a device whose wavelength is 850 nm, the radiation angle is 30 °, and the power range can vary from 9 to 16 V. The device has built-in protection against voltage surges. According to users, the PIK-2 spotlight has many similar qualities with the above model. These devices have the same cost, and it is limited to 3,550 rubles. The same can be said about the power range. However, the second device can operate even at 8 V. Both devices have effective protection against surge surges, which can occur when the equipment is turned on.
Area of use
The infrared LED floodlight can be used in outdoor cameras, dome and open-frame night-vision devices that have day-night functionality. Their matrix perceives light in the infrared range. Devices usually have a mechanical, automatic or software filter that eliminates exposure to reflected rays. It must be mentioned that the radiation from the camera will be black and white.
These projectors are used to amplify cameras with night vision when monitoring objects with limited lighting. It can be cinemas, warehouses, office, industrial premises and so on. Such floodlights may be needed to protect the perimeter of the walls of an impressive length. Indispensable devices when using an open source of lighting, which can be blinded by traffic participants. Installation of covert video surveillance necessarily requires the presence of infrared spotlights.
Features of different types of infrared spotlights
According to the installation technology, the described devices can be divided into integrated and individual. The most versatile and powerful are infrared floodlights, which are equipped with motion sensors. These devices are characterized by increased power consumption, which reaches 20 A, while in the projector there is a power supply of 12-24 V. On sale you can find devices for illuminating dome cameras. Some devices used in offices do not have functionality for night video surveillance. To turn a conventional device into a dome camera, such a backlight is used.
Conclusion
Recently, infrared web-cameras began to be manufactured, which also have a night vision function. This addition allows you to achieve high-quality images in low light. In addition, it has additional features. The most useful is the ability of the device to connect to an alarm system in a home environment. The most convenient and popular cameras are wireless, as they can be installed anywhere in the apartment.