The ratio of a lens’s focal length to its aperture size. Lower ƒ/ numbers mean that more light or thermal energy is reaching the sensor, which increases colour accuracy in visible images and increases definition and accuracy in thermal images.
In CCTV, analog refers to a Camera Video Format. This refers to systems and components that use the Video standard NTSC/PAL composite video formats usually using a BNC connector.
A type of coating applied to lens elements to maximize the performance and accuracy of the lens by reducing internal reflections.
An adjustable diaphragm that controls the amount of light coming through the lens.
The ratio of width to height in a video display or image sensor.
An automatic adjustment to regulate and optimize the amount of light or infrared energy a camera receives.
A bolometer is a sensitive device for measuring the power of electromagnetic radiation
CCD or Charged Coupled Device.
Closed Circuit Television is the use of video cameras to transmit a signal to a specific place, on a limited set of monitors.
Acronym for complementary metal oxide semiconductor.
Cooled thermal imaging uses an integrated cryogenic cooler, which chills the thermal image core to temperatures as low as -196°C (-321°F) to increase the sensitivity and accuracy of the thermal image.
Cryogenic Cooling involves cooling sensors (or other parts) down to extremely low temperatures ( Below ~ 120 Kelvin or -153 Celcius) to reduce incoming noise and get more accurate readings.
Digital describes electronic technology that generates, stores, and processes data in terms of two states: positive and non-positive.
Let’s face it, digital camera sensors are measured in ridiculous ways. If you’re trying to make sense of what dimension a 1/2.8" sensor size is referring to, or if you’re wondering how thermal imaging sensor measurements are different, you’ve come to the right place.
Detection, Observation, Recognition, and Identification (DORI) are a set of standards used to compare the performance of visible light surveillance cameras.
A universally accepted set of standards providing a means of measuring the effective distance of thermal infrared cameras.
Detection, Recognition, and Identification (DRI) are a universally accepted set of standards used to compare the performance of thermal infrared cameras.
An acronym for Digital Video Recorder
Waves of electromagnetic energy that travel through space. Examples include radio waves, WiFi, microwaves, radiant heat, visible light, ultraviolet, x‑rays and gamma rays.
The combination of all of the various frequencies of electromagnetic radiation. This includes radio waves, WiFi, microwaves, radiant heat, visible light, ultraviolet, x‑rays and gamma rays.
Refers to the technology used to create an infrared image of a scene without having to “scan” the scene with a moving sensor. It is also the name of a thermal imaging camera manufacturer (FLIR Systems).
Gyro Stabilization is a way to stabilize a camera by sensing for external movements of the system, and then, countering them with opposite movements to the camera controls in real time. Creating a stable platform for imaging.
Mechanical stabilization of a PTZ camera system by using the pan/tilt head to counteract movements detected by a gyroscope.
Based on the DRI standards, identification of an object means that you are able to differentiate within a class of objects. For example, this person looks like a tall woman wearing a dress, that person looks like a soldier.
InSb stands for Indium Antimony (or Antimonide). It is a type of semiconductor. More specifically a type of Microbolometer sensor used in some Cooled Thermal Cameras.
ITAR is a United States regulation to control the export of defense and military related technologies. Some of our products fall under these regulations and may only be sold or exported if authorization from the Department of State is received.
Based on the DRI standards, detection means that you will be able to see the target, however it will be little more than a speck. There is a 50% chance that the target will be visible on at least two pixels, and there is a good chance that it is something of suspicion.
Acronym for Laser Range Finder. It is a device used to measure distances.
A subset of the infrared band of the electromagnetic spectrum, covering the wavelengths ranging from 8µm to 14µm (8,000 to 14,000nm). This is the radiant heat that uncooled thermal imaging cameras see.
Acronym for Mobile Command Center (sometimes refered to as MCS or Mobile Command Station)
Mercury Cadmium Telluride is a type of thermal camera sensor.
A microbolometer is a specific type of bolometer (a very sensitive digital thermometer where its electrical resistance varies with temperature) used as a detector in a thermal camera.
Microns, also known as micrometers (represented as µm) are a length of measurement equal to one millionth of a meter. (1,000µm is equal to 1mm.)
A subset of the infrared band of the electromagnetic spectrum, covering the wavelengths ranging from 3µm to 5µm (3000nm to 5000nm). This is the radiant heat that cooled thermal imaging cameras see.
A subset of the infrared band of the electromagnetic spectrum, covering the wavelengths ranging from 0.7µm to 1.4µm (700 to 1400nm).
ONVIF is a standard for IP video surveillance devices. While it usually works well for basic video integrations, ONVIF is not ideal for handling PTZ commands of EO/IR systems and does not allow for many advanced commands such as switching thermal palettes, enabling gyro stabilization, enabling NIR/Fog Filters, etc.
Optoelectronics is the branch of technology concerned with the combined use of electronics and light.
An industry standard protocol for control of pan-tilt-zoom cameras. Typically used over an RS485 serial line.
Pixels Per Meter is a measurement for the amount of potential detail that a camera offers at a given distance. A higher PPM value means that the image definition is more detailed it similar DPI Dots Per Inch in printing.
RDK stands for Rapid Deployment Kit.
Based on the DRI standards, recognition does not mean that you can recognize a person. Recognition simply means that you are able to recognize an object’s class (is it a human or a car, truck or a tank, etc).
The integration of a radar or other target detection device that tells an EO/IR surveillance PTZ camera where to point.
A Sterling Cooler is a highly efficient Cryogenic Cooler.
SWaP is an Acronym commonly used in the security/aerospace industries. It stands for Size Weight and Power.
SWIR is an acronym for Short Wave InfraRed. It refers to the wavelengths from 0.9 to 1.7 microns.
Thermodynamics is the branch of Physics that deals with the relations between heat and all other forms of energy. (electrical, mechanical, chemical etc.)
An imager that collects visible light (400 to 700nm) and converts it to a color image that replicates normal human vision.
VOx or Vanadium Oxide, is a type of thermal energy sensing semiconductor.
nm stands for Nano Meter. It is the same as one billionth of a meter.
4K refers to one of two resolutions. 3840 x 2160, or 4096 x 2160. 8K doubles the numbers again, to a resolution of 7,680 by 4,320.
Back focal length is a mechanical measurement defined as the distance between the last surface of an optical lens and its image plane.
A counter drone or counter UAV system is used to deny airspace access to unmanned aircraft that aren’t authorized to fly there.
Focal length is a number in millimeters (mm) that indicates the field (angle) of view of the lens
This term refers to the size of an image, usually in reference to a photo from a digital camera.
A multi Sensor System is a camera system that houses multiple image sensors and lenses in a single integrated system to cover a wide angle of view and/or a wide range of wavelengths.
A FLIR (Forward Looking Infrared Camera) Thermal Cameras f‑number (ƒ/#) or f‑stop refers to the ratio of a lens’s focal length to its aperture’s diameter and indicates the amount of IR energy (Hear) coming through the lens to the MWIR or LWIR infrared sensor. IR GE lenses are typically specified with their maximum aperture at the max zoom and focal length.
Vertical Take-Off and Landing.
A wavelength is the distance measured between the peaks of a wave.
ZLID or Zoom Laser IR Diode is a night vision technology by Infiniti Electro Optics since 2007 that adjusts the laser’s intensity and focus area to sync with a PTZ zoom camera.
The zoom ratio is used to indicate the power of the lens, rather than the focal length. You will see it listed in the advertising with an X, such as 3X or 10X. etc.
An aspect ratio (or AR), is the ratio of the vertical to the horizontal image size.
A milliradian (SI-symbol mrad, sometimes also abbreviated mil) is an SI derived unit for angular measurement which is defined as a thousandth of a radian (0.001 radian).
A bit rate is the amount of data a camera is sending over a video stream. It is measured in bits per second.
A FLIR (Forward Looking Infrared Camera) Thermal Cameras f‑number (ƒ/#) or f‑stop refers to the ratio of a lens’s focal length to its aperture’s diameter and indicates the amount of IR energy (heat) coming through the lens to the MWIR or LWIR infrared sensor. IR GE lenses are typically specified with their maximum aperture at the max zoom and focal length.
FOV or field of view is the vertical measurement of a camera or person’s maximum extent of vision without moving, it is usually measured in degrees.
[Light Amplification by the Stimulated Emission of Radiation] or Lasers, are devices that create uniform coherent light.
LiDAR is an acronym of "Light Detection And Ranging" or "laser imaging, detection, and ranging"] LiDAR sometimes is called 3-D laser scanning, it is essentially a special combination of a 3-D scanning.
Pixel pitch is the distance between two adjacent pixels in the sensor, pixel center to pixel center.
PTZ stands for Pan Tilt Zoom. It describes the range of motion on most modern security cameras.
RADAR is an acronym for RAdio Detection And Ranging.
Jamming wireless signals is defined as the disruption of existing wireless communications by decreasing the signal-to-noise ratio at receiver sides through the transmission of interfering wireless signals.
Radio Frequency. RF refers to oscillatory change in a circuit.
The Doppler effect, or Doppler shift, describes the changes in frequency of any kind of sound or light wave produced by a moving source with respect to an observer.
A FLIR (Forward Looking Infrared Camera) Thermal Cameras f‑number (ƒ/#) or f‑stop refers to the ratio of a lens’s focal length to its aperture’s diameter and indicates the amount of IR energy (heat) coming through the lens to the MWIR or LWIR infrared sensor. IR GE lenses are typically specified with their maximum aperture at the max zoom and focal length. An IR cameras sensitivity can be defined by its NEdT Noise Equivalent Temperature Difference which is often measured in milli-Kelvins (thousandths of a degree) and is determined by the thermal cameras sensor sensitivity and the F stop of the lens it is the net performance for infrared imaging cameras just as lux is used to measure the sensitivity of visible cameras.
A FLIR (Forward Looking Infrared Camera) Thermal Cameras f‑number (ƒ/#) or f‑stop refers to the ratio of a lens’s focal length to its aperture’s diameter and indicates the amount of IR energy (heat) coming through the lens to the MWIR or LWIR infrared sensor. IR GE lenses are typically specified with their maximum aperture at the max zoom and focal length and for uncooled thermal cameras are the biggest factor to the IR cameras overall sensitivity.
A UAS is an Unmanned Air System. C-UAS stands for Counter Unmanned Air Systems.
Ultra High Definition. Resolutions of 4K and up.
X-Hot Cooled Thermal Core
XBn/XBp is a type of cooled thermal camera sensor type made out of either an InAsSb or an AlSbAs superlattice
ZLID is an acronym that stands for Zoom Laser Infrared Diode.