Field of view is the measured area of the scene a person sees when looking through the optical device. It depends on the build of the eyepiece, thickness of the lenses and it is also affected by magnification. Field of view can be expressed in multiple measurements. Measurements in yards, feet and meters are calledContinue reading
Hello and welcome to another Optics Trade Debates video. We are currently in the process of explaining everything regarding the Holosun brand. Today we’ll focus on the Paralow series, one out of the 4 red dot series that the company has to offer. Let’s start with some general features of the Paralow series fromContinue reading
A, B and C markings refer to the distances between holes on the rail/mount. A is the distance between the front two holes on the rail/mount.
A thermal imaging device enables measuring the temperature of the target without physical contact. Thermal imaging devices can detect the smallest temperature difference of lower than 50 mK (miliKelvin) or 0.05 °C. This is called temperature sensitivity. An easier explanation would be if there are two objects with slightly different temperature (the first object has aContinue reading
The data that tells how accurately in many meters/yards the device will measure the distance to the object and what kind of deviation can occur (in the same units).
Diopter range in optics with one ocular (riflescopes, spotting scopes, NV optics, …) Diopter range is an adjustment on optical products which can correct the prescription on each of your eyes. That way you can see a sharp image without wearing glasses. The diopter ring is normally located on the eyepiece and by turning it your image appears sharper.Continue reading
Tube diameter is that diameter on the riflescope, where mounts are clamped on (see the picture below). This parameter is an important information when buying proper mounting rings for your rifle scope. Most common mounts have a diameter of 1 inch, 30 mm and 34 mm, but in the last years, manufacturers started to produceContinue reading
First, you need to know that every digital camera (including digital night vision devices) has the main part that captures the light coming through the lens to form an image. This part is called a sensor. Mainly, a sensor is a solid device which captures the light and forms it into a digital image thatContinue reading
Spectral sensitivity is used to specify the various attributes of the photopigments in the photoreceptor cells in the retina of the eye. Thermal imaging devices operate in different electromagnetic spectrums. The relative efficiency of detection of signals is the spectral sensitivity or spectral response measured in micrometers ( µm ). Typical spectral sensitivity of thermalContinue reading
The smaller the size of a pixel and larger the number of pixels the higher the resolution and therefore the picture clarity. The pixel can be defined as the smallest of the homogeneous units in color that make up a digital type image. Enlarging one of these images through a zoom it is possible toContinue reading