A: Optical sights are designed for precise targeting of various types of weapons in the daytime and at dusk (with reticle illumination), and can also be used for area observation and approximate distance measurement by reticle with rangefinders scale (if the size of the object is known). Optical sights are divided into two main groups: with constant and variable magnification (zoom). Zoom Optical sights allow you to change the angular field of view. 

A: Red-Dot (Collimator) Sights - modern, lightweight, simple and reliable devices, designed for fast and accurate aiming of weapons at daytime and at twilight conditions. Red Dot sight is an optical device in which a constantly visible aiming mark is formed by the diode. It is enough to match the aiming mark with the target without carefully positioning the sight relative to the shooter's eyes. The sights are sealed and filled with dry nitrogen to avoid fogging of the internal optical surfaces.

A: Night vision devices provide observation and aiming in natural night light conditions (starlight and moonlight). NVDs use the principle of image intensification. An optical system containing a lens, an IIT (Image Intensification Tube), and an eyepiece collects the available light reflected by the observed objects and projects the intensified image into the operator's eye. The products use IIT generation 2+ and 3 with green or black-and-white screens.

A: Thermal vision sights and devices are designed for detection, recognition and identification of objects in difficult visible conditions (fog, dust, smoke) or complete darkness. Thermal sensor of the device (sight) detects the temperature difference and contrast between the observed object and the background.

A: All manufacturers report the technical (or calculated) target detection range in the performance characteristics – usually for a person or an animal with a height of 1.7 to1.8 m, and in near-ideal night observation conditions. For common sensors with dimensions of 384x288 pixels, the technical detection range is 1–1.5 km, different manufacturers write their calculated value. Most thermal imaging device producers consider an appropriately sized target to be detected if an image of that target appears on the display and at least two adjacent pixels are used. The observer will see just a small luminous point on a display.

A: First Responders,  Ranching,  Law Enforcement, Hunting and Traveling, Building Inspection.

A: The Peleng lens takes pictures with a round image of 360 degrees. That's why you may see black corners in the image. In general, initially for all 360 degree lenses, you will always see them. You may crop them out of the picture if you wish and you'll have a real image 176-178 degrees in each direction without vignetting. The Peleng lens is perfect when an artistic effect is desired. The wide-angle fisheye Zenitar lens has 360 degrees view (as in the specs) but a real image is more rectangular. The actual size of the image in each direction ( vertical and horizontal ) is 168-172 degrees.

A: No. All our adapters are specially designed to adapt our lenses to different camera brands. They allow taking high quality pictures for all distance ranges, from short distances to infinity.

A: It means that the lens has a built-in fitting to a specific camera brand and NO adapter is needed to mount the lens on the camera.

A: A monocular is a type of telescope — an optical device that magnifies distance objects using curved lenses or mirrors that gathers and focuses light or other forms of infrared radiation (in the case of digital, night vision and thermal devices) and to produce an image. Monocular only have one eyepiece for viewing with one eye. Monocular is more compact, lighter weight and more cost-effective than binoculars. The most important numbers in the specifications of a monocular are the magnification range and the objective lens—which are displayed like this: 8x32mm. The magnification can be either single or in a range, displayed as such: 4-16x.  The magnification (x) is the measurement of how much larger the object appears than what you see with your naked eye. As in the example above, the object is magnified 8 times. Though larger magnifications allow you to see objects much further away, it will decrease your field of view and requires a bigger optic.


  • Because of their size, hikers, backpackers and campers can easily carry them without compromising weight.
  • Since you view using only one eye, you still have a very wide field of view and can remain situational aware.
  • Monocular is very easy to use with simple focus adjustments.
  • You can use most monocular one-handed.
  • Monocular is less expensive to make, so you get more value per dollar, especially if you are shopping for high-end and specialty monocular.

A: Laser rangefinders are used for quick and precise distance measurement for spatial objects. Portable laser rangefinders can be equipped with a ballistic calculator, a magnetic compass, inclination sensor, and a GPS sensor. Rangefinders modules are designed for integration into complicated optoelectronic devices and systems and provides distance measurement and data transfer to the main control board. An LRF is a device that uses a laser beam (invisible to the naked eye) to determine the distance to an object. The science here is simple – a laser beam is emitted from the LRF, it travels to the object, and then bounces back and returns to the device. The elapsed time during the laser’s journey determines the distance to the object, and a digital readout is given on the device’s display. 

A: Laser designators are designed for quick aiming of weapons at short and medium shooting distances. Visible designators (red laser radiation – 670 nm, or green – 525 nm) provide aiming in the daytime, infrared designators (830-860 nm) are used for aiming in combination with night vision sights and observation devices at twilight and night conditions.

A: Triplet means three lenses made of different types of optical glass bonded together and designed that, together, they straighten out the light that comes into the front of the loupe lens so that it's the same when it leaves. Three elements lens making up achromatic triplet gathers lots of light to provide a bright, clear, and color correct view. The 10x power magnification provides the best magnification to depth of field ratio and is the most popular power for a handheld magnifier. BelOMO Triplet 10x magnifying loupe has three achromatic, color correction, anti-reflection lenses that make it possible to see the image as precise and clear as in the original. Due to the presence of three lenses the BelOMO loop is called a triplet.

A: An image (figure / symbol / text) being 0,15–0,3 mm high which is performed by means of printing, blind embossing, de-metallization, holography, etc. Microprint is widely used in security documents where it comes as a background, forms patterns and images, enhances protection of holograms, security threads, etc.

A: An image visible in transmitted light only, incorporated into the paper during its manufacturing process. A watermark has slightly diffused blurred contours and gradual transitions of the tones. It is formed by the density of the fibres on certain areas of the image. Thus, darker elements of the watermark are located on more dense areas of the paper, and lighter elements are located on less dense areas. The watermark does not appear under UV light.

A: A visible graphic reproduction of a holder’s fingerprint uppermost layer (fig. 1). It is a relief lines (papillary pictures). Their structure is determined by a number of friction ridges divided by grooves. These friction ridges form a complex skin pattern which has the following characteristics:

  • individuality — a structure of papillary ridges is individual by its location, configuration and mutual arrangement. They form a special pattern which is unique for every person;
  • relative stability — permanent structure of the uppermost skin layer which remains unchanged throughout the life;
  • ability to recover — After the skin damage papillary ridges recover to the initial state.
Fingerprint identification is the most common, effective and reliable biometric technology.