What is thermal imaging?

Understanding Thermal Technologies: A Glimpse into the World of Infrared

Thermal imaging devices have become a game-changer in various industries, offering a unique way to visualize and interpret the world around us. By harnessing the power of heat signatures, these devices provide invaluable insights and applications across multiple sectors. By converting the infrared energy emitted by objects into a visible spectrum, this technology lets us see the unseen. It uncovers subtle temperature variations in everything within its field of view, rendering visible what is usually invisible to the human eye. With the capability to function in complete darkness and challenging weather conditions, thermal imaging provides an unparalleled advantage in various applications.

Applications in Various Sectors

Thermal imaging has found its way into an impressive array of fields, each leveraging the technology's unique capabilities to solve specific challenges. «How do thermals work?» becomes a pertinent question when considering its broad range of applications.

• Law Enforcement and Security. Thermal imaging cameras can detect human activity up to 1,500 meters away, even in complete darkness. This long-range detection enables officers to approach potentially dangerous situations in stealth mode, thereby reducing risks. In border security, thermal imaging has led to a 40% increase in the detection of illegal crossings.
• Military. Originally developed for military purposes, thermal imaging is now a standard feature in modern combat systems. For instance, thermal scopes can identify a vehicle's heat signature at distances exceeding 2 kilometers, providing a tactical advantage on the battlefield.
• Fire and Rescue Teams. In firefighting, thermal cameras can see through smoke, identifying hot spots in a fire or locating individuals trapped inside buildings. These devices have been known to reduce search time by up to 50%, which can be a life-saving factor.

THE MAIN PARAMETERS OF THERMAL IMAGING DEVICES

Thermal sensor size

The resolution of the thermal sensor, specifically the microbolometer, serves as a crucial parameter in evaluating sensor quality. It denotes the number of sensitive elements (pixels) that form the sensor, and a higher pixel count in sensors contributes to the production of more detailed images of objects.

Standard sizes for thermal imaging sensors are:

Pixel Pitch and Thermal Imaging Sensor Measurement

When delving into the intricate technical specifications of a digital image sensor, one will inevitably encounter a critical metric known as "pixel pitch." Regrettably, this precise and straightforward measurement is often overlooked in standard camera specifications. In contrast, thermal imaging sensors, including MWIR and LWIR, as well as SWIR sensors, are consistently evaluated based on their pixel pitch.

In essence, pixel pitch is the width of an individual pixel on the sensor, usually expressed in microns (μm). This simplifies the calculation of the overall physical sensor size—just multiply the resolution by the pixel pitch. However, confusion arises when considering how these sizes impact the field of view and detail levels in thermal or SWIR sensors.

Unlike standard visible sensors, where increasing resolution without altering sensor size enhances image detail, thermal cameras follow a different paradigm. In thermal imaging, elevating resolution while maintaining the pixel pitch yields the same level of detail in an image but with a broader field of view.

In the context of pixel pitch differences, let's explore the distinctions between two common values: 17 microns and 12 microns.

17 Microns Pixel Pitch:

A pixel pitch of 17 microns implies that the centers of neighboring pixels are situated at a distance of 17 micrometers from each other. Sensors with this pixel pitch are likely to be larger in physical size, and this can offer advantages such as improved light sensitivity. The larger pitch can be beneficial in applications where a higher sensitivity to infrared radiation is crucial.

12 Microns Pixel Pitch:

On the other hand, a pixel pitch of 12 microns indicates a smaller distance between pixel centers. Sensors with a 12-micron pixel pitch are generally more compact, allowing for higher pixel density within the same physical sensor size. This can result in increased image resolution and finer details, making them suitable for applications where a high level of detail is essential.

At ATN corp, we address these distinctions by assessing a camera's effective detail using PPM (pixels per millimeter). Additionally, we utilize an in-house tool capable of previewing the field of view for most sensor sizes at any focal length. For assistance in selecting the optimal camera tailored to your application and budget, please don't hesitate to contact us today.

ATN THERMAL IMAGING PRODUCT LINES

ATN 5th GENERATION THERMAL SCOPES

ATN boasts an extensive line of thermal products, catering to a wide range of needs and preferences. Their offerings include thermal scopes, thermal monoculars, and thermal binoculars. Each device is designed to deliver exceptional performance, accuracy, and reliability in various scenarios.

ATN THOR 5 XD Thermal Scope

The ATN Thor 5 XD stands as the apex of thermal optics, offering advanced features and cutting-edge technology. With its superior thermal imaging capabilities, users can experience enhanced clarity and precision, even in challenging conditions. This device is a true game-changer for hunters, shooters, and outdoor enthusiasts who demand the best.

• Sensor. Boasts an outstanding resolution of 1280x1024 pixels, ensuring exceptional detail and clarity in thermal imaging.
• Fast Refresh Rate. With its 60 Hz refresh rate, the ATN Thor 5 XD guarantees minimal motion blur, ensuring clear visibility of moving objects and enabling precise tracking of fast-moving subjects.
• Modes: Black Hot/ White Hot/ Color Mode - different modes selection for specific needs and user's comfort.
• Smart Features: XTREME DEFINITION SENSOR 1280x1024, RECORD HD VIDEO, DUAL STREAM VIDEO, SMOOTH ZOOM, E-COMPASS, WIFI DUAL STREAMING, COLOR MODES, COMFORTABLE EYE RELIEF, CUSTOM RETICLE EDITOR, BALLISTIC CALCULATOR, ONE SHOT ZERO, Recoil Activated Video (RAV), PROFILE MANAGER, ULTRA LOW POWER CONSUMPTION, SHARE ON SOCIAL MEDIA, BLUETOOTH, 30MM TUBE.

ATN THOR 5 Thermal Scope

The ATN Thor 5 takes thermal imaging to new heights, redefining the boundaries of performance and functionality. Equipped with state-of-the-art technology, this device delivers outstanding thermal image quality, providing users with unmatched visibility and target detection.

• Sensor. Provides image clarity with a resolution of up to 640x480 pixels, significantly enhancing object identification capabilities.
• Fast Refresh Rate. A 60 Hz refresh rate ensures that moving objects appear with minimal motion blur, crucial for tracking fast-moving subjects.
• Modes: Black Hot/ White Hot/ Color Mode - different modes selection for specific needs and user's comfort.
• Smart Features: ULTRA SENSITIVE SENSOR, RECORD HD VIDEO, DUAL STREAM VIDEO, SMOOTH ZOOM, E-COMPASS, WIFI DUAL STREAMING, COLOR MODES, COMFORTABLE EYE RELIEF, CUSTOM RETICLE EDITOR, BALLISTIC CALCULATOR, ONE SHOT ZERO, Recoil Activated Video (RAV), PROFILE MANAGER, ULTRA LOW POWER CONSUMPTION, SHARE ON SOCIAL MEDIA, BLUETOOTH, 30MM TUBE.

ATN THERMAL SCOPES

ATN THOR 4 Thermal Scope

The ATN Thor 4 is a SMART thermal imaging scope that combines innovation and convenience. With its advanced features like built-in Video Record, Wi-Fi, profile manager and ballistic calculators, users can benefit from a seamless shooting experience while capturing clear thermal images.

• Sensor. Features an impressive resolution of up to 640x480 pixels, providing sharp detail and enhanced clarity in thermal imagery.
• Modes: Black Hot/ White Hot/ Color Mode - different modes selection for specific needs and user's comfort.
• Fast Refresh Rate. The ATN Thor 4's 60 Hz refresh rate provides seamless imagery, ensuring that moving objects are captured with minimal blur, facilitating accurate monitoring of rapid targets.
• Smart Features: RECORD HD VIDEO, WIFI DUAL STREAM VIDEO, BALLISTIC CALCULATOR, RECOIL ACTIVATED VIDEO (RAV), ONE SHOT ZERO, PROFILE MANAGER, SMART RANGE FINDER, DUAL CORE PROCESSOR, SHARE ON SOCIAL MEDIA, BLUETOOTH, ULTRA LOW POWER CONSUMPTION (18+HRS USE), SMOOTH ZOOM, ELECTRONIC COMPASS, 30MM TUBE.

ATN THOR LTV

For those seeking an ultra-lightweight thermal scope with video recording capabilities, the ATN Thor LTV is the perfect choice. Its compact design and exceptional performance make it a valuable tool for hunters and outdoor enthusiasts on the move.

• Sensor. With a resolution of up to 640x480 pixels, the device offers exceptional image clarity, greatly enhancing its ability to identify objects with precision.
• Fast Refresh Rate. The 60 Hz refresh rate of the device ensures that moving objects are displayed with minimal motion blur, making it essential for accurately tracking fast-moving subjects.
• Modes: Black Hot/ White Hot/ Color Mode - different modes selection for specific needs and user's comfort.
• Smart Features: VIDEO RECORDING, 30 MM STANDARD RINGS, COLOR MODES, ONE SHOT ZERO, 10 HOURS BATTERY LIFE, RETICLE MULTIPLE PATTERNS, LIGHTWEIGHT.

ATN THOR LT

The ATN Thor LT provides users with an ultra-lightweight thermal scope that doesn't compromise on quality. With its ergonomic design and superior thermal imaging capabilities, this device offers an excellent balance of performance and portability.

• Sensor. Features an impressive resolution of 384x288 pixels, providing sharp detail and enhanced clarity in thermal imagery.
• Fast Refresh Rate. With a 60 Hz refresh rate, this device guarantees minimal motion blur for moving objects, making it vital for accurately tracking fast-moving subjects.
• Modes: Black Hot/ White Hot/ Color Mode - different modes selection for specific needs and user's comfort.
• Smart Features: 30 MM STANDARD RINGS, ONE SHOT ZERO, 10 HOURS BATTERY LIFE, RETICLE MULTIPLE PATTERNS, LIGHTWEIGHT.

ATN THERMAL IMAGING MONOCULAR

ATN OTS 4T

The ATN OTS 4T is a highly versatile thermal imaging monocular that delivers exceptional performance. Whether for surveillance, search and rescue operations, or wildlife observation, this device offers reliable thermal imaging capabilities in a compact form factor.

• Sensor: The ATN OTS 4T offers a remarkable resolution of 640x480 pixels, delivering superior detail and clarity in its thermal imaging.
• Fast Refresh Rate. With its 60 Hz refresh rate, the ATN Thor 5 XD guarantees minimal motion blur, ensuring clear visibility of moving objects and enabling precise tracking of fast-moving subjects.
• Modes: Black Hot/ White Hot/ Color Mode - different modes selection for specific needs and user's comfort.
• Smart Features: RECORD HD VIDEO, WIFI DUAL STREAM VIDEO, SMART RANGE FINDER, DUAL CORE PROCESSOR, SHARE ON SOCIAL MEDIA, ULTRA LOW POWER CONSUMPTION (16+HRS USE), SMOOTH ZOOM.

ATN OTS LT

The ATN OTS LT is a lightweight thermal imaging monocular designed for individuals who require essential thermal imaging functionality without added bulk. Its user-friendly interface and high-quality thermal imaging make it an ideal choice for a variety of applications.

• Sensor. Delivers crisp visuals with a resolution of 320x240 pixels, amplifying the ability to discern and identify objects in the thermal spectrum.
• Fast Refresh Rate. With a 60 Hz refresh rate, the ATN OTS LT captures moving scenes smoothly, making it essential for observing dynamic subjects or events.
• Modes: Black Hot/ White Hot/ Color Mode - different modes selection for specific needs and user's comfort.
• Smart Features: OBSIDIAN LT CORE, SIMPLE UI, LIGHTWEIGHT, ERGONOMIC DESIGN, LONG-LASTING BATTERY.

ATN ODIN LT

The ATN ODIN LT is a compact thermal imaging monocular that excels in portability and performance. With its durable construction and exceptional thermal imaging capabilities, this device is a reliable companion for any outdoor adventure.

• Sensor. Offers sharp imaging with a resolution of 640x480 pixels, bolstering the accuracy of thermal object detection and recognition.
• Fast Refresh Rate. Featuring a 60 Hz refresh rate, the ATN ODIN LT ensures dynamic scenes are portrayed smoothly, essential for observing and tracking swift activities or targets.
• Modes: Black Hot/ White Hot/ Color Mode - different modes selection for specific needs and user's comfort.
• Smart Features: BLACK HOT / WHITE HOT MODE, COMPACT AND ERGONOMIC DESIGN, HEAD / HELMET MOUNTING OPTIONS, LIGHT WEIGHT (ONLY 0.62 LB).

ATN OTS-XLT

Completing the ATN lineup is the OTS XLT, a thermal imaging monocular that offers high-quality imagery and advanced features in a compact and lightweight form factor. It's the perfect tool for hunters, outdoor enthusiasts, and professionals who require reliable thermal imaging capabilities.

• Sensor. Delivers pristine imaging with a resolution of 160x120 pixels, greatly amplifying the detail and discernment in thermal object identification.
• Fast Refresh Rate. Equipped with a 50 Hz refresh rate, the ATN OTS XLT presents fluid visuals of moving scenarios, ensuring effective tracking of rapidly moving entities.
• Modes: Black Hot/ White Hot Mode/Color Mode - different modes selection for specific needs and user's comfort
• Smart Features: ERGONOMIC DESIGN, RECORD VIDEO, COLOR MODES, LONG LASTING BATTERY.

ATN THERMAL IMAGING BINOCULAR

ATN BINOX 4T

ATN also offers the ATN Binox 4T, a thermal imaging binocular that provides enhanced situational awareness and target detection. With its dual eyepiece design and thermal imaging capabilities, users can navigate the environment with ease, even in low-light conditions.

• Sensor. Captures detailed imagery with a resolution of 640x480 pixels, considerably augmenting the precision of thermal object recognition.
• Fast Refresh Rate. With a 60 Hz refresh rate, the ATN Binox 4T showcases dynamic scenes seamlessly, pivotal for monitoring and following quick-moving entities.
• Modes: Black Hot/ White Hot/ Color Mode - different modes selection for specific needs and user's comfort.
• Smart Features: RECORD VIDEO, LASER RANGEFINDER, COLOR MODES, IR ILLUMINATOR, WIFI DUAL STREAMING, SMOOTH ZOOM, E-COMPASS, ULTRA LOW POWER CONSUMPTION, Bluetooth.

Final thoughts

In conclusion, ATN stands at the forefront of thermal imaging technology, offering a comprehensive line of products to meet the diverse needs of hunters, shooters, and outdoor enthusiasts. With their commitment to innovation and quality, ATN continues to redefine the possibilities of thermal optics, providing users with the best tools to enhance their experiences in the field.