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Sektör Haberleri
Ev > News > Sektör Haberleri1. Different Applications
Infrared thermal imaging technology has applications in both military and civilian sectors, initially originating in the military and gradually transitioning to civilian use. Infrared night vision devices are military night vision devices that utilize photoelectric conversion technology.
2. Different Functions
In civilian use, they are generally called thermal imagers, primarily used in R&D, industrial inspection, and equipment maintenance. They are also widely used in fire prevention, night vision, and security. In layman's terms, a thermal imager converts invisible infrared energy emitted by an object into a visible thermal image. The different colors on the thermal image represent the different temperatures of the measured object. Night vision devices are night sights with an image intensifier as their core component. Instead of illuminating the target with an infrared searchlight, they use light reflected from the target under weak illumination. This light is intensified by the image intensifier on a fluorescent screen, creating a visible image that can be perceived by the human eye, allowing for observation and aiming.
3. Different Operating Principles
Infrared thermal imagers utilize infrared thermal imaging technology to detect infrared radiation from an object and, through signal processing and photoelectric conversion, convert the temperature distribution of the object into a visible image. Infrared thermal imagers precisely quantify the actual heat detected, creating a real-time image of the entire object in the form of a surface. This allows accurate identification of areas of heating or suspected faults. The phased array on the infrared detector element scans the focused light. The detector element generates a highly detailed temperature pattern, known as a thermogram.
Core Working Principle: The Source of Essential Difference
Infrared Thermal Imager
Core Principle: Based on thermal radiation detection, it does not rely on any visible light. All objects with temperatures above absolute zero (-273.15°C) emit infrared radiation. A thermal imager captures this invisible radiation signal through an infrared detector and then, through a signal processing system, converts it into a grayscale or pseudo-color image (e.g., red and yellow indicate hot areas, blue and black indicate cold areas).
Key Feature: The image reflects the object's temperature distribution, not its visual appearance. It functions even in complete darkness (such as late at night or in confined spaces) or in environments with thick smoke or fog.
Night Vision Devices
Core Principle: Based on visible light enhancement, it essentially "amplifies weak light signals." Its core component is the image intensifier tube, which amplifies weak natural light (such as starlight or moonlight) or artificial light (such as distant lights) by thousands or even tens of thousands of times, converting it into a visible image, allowing users to clearly see objects in low-light environments.
Key feature: It relies on ambient light (even if it's extremely weak). In completely dark environments (such as underground caves or sealed black boxes), it cannot form an image and requires an infrared fill light (this essentially uses the infrared light from the fill light, which is different from the principle of a thermal imager).
Core Application Scenarios for Infrared Thermal Imagers
Security Monitoring: Detecting intruders outside fences and suspicious individuals hiding in bushes in dark environments at night;
Industrial Inspection: Detecting circuit overheating in the power industry, troubleshooting high-temperature bearings in the machinery industry, and detecting hollow walls and leaks (temperature differences) in the construction industry;
Medical: Temperature screening (rapid temperature measurement during the pandemic), and auxiliary diagnosis of skin diseases (localized temperature abnormalities);
Outdoor Rescue: Searching for lost people in forests and wilderness at night (where body temperature differs significantly from ambient temperature), or searching through thick smoke for victims trapped in fires.
Core Application Scenarios for Night Vision Devices
Outdoor Observation: Hunting (to clearly identify prey in low-light environments), birdwatching (observing bird activity at dusk/dawn), and astronomical observation (to assist in identifying details in star maps);
Civil Security: Nighttime surveillance of homes and courtyards (requires weak moonlight or streetlights, as imaging more closely matches human visual habits);
Military: Individual night patrols and vehicle driving (relying on low-light conditions; infrared fill light can be used to mitigate short periods of darkness).
If you want to know more about fusion night vision goggles, infrared thermal imaging scopes, etc., please feel free to contact us.
