NIR cameras also inspect security labels in the pharmaceutical and cosmetic industries and is used for brand protection. These security features are difficult to inspect using visible light. Banknote production is becoming increasingly complex and includes a range of security features, such as embedded magnetic strips, holographs, and watermarks. The printing industry uses NIR cameras to check security features woven into currency. NIR cameras operate in the NIR spectrum with wavelengths of 750–1000 nm and use CMOS sensors, the same sensors used in visible light applications. This technology is proving to be a reliable manufacturing tool for inline inspection and classification of a range of products. Industrial image processing in the NIR spectrum is a powerful, non-intrusive technique used on production lines for quality assurance and increased productivity.
Let’s take a look at the different types of infrared and X-ray technologies, their applications, and the sensor technology that supports it.Ĭourtesy of Teledyne DALSA Near Infrared (NIR) Imaging Their ability to detect thermally emitted IR light (heat) makes them well suited for night vision, fever detection, and an assortment of security applications, to name just a few of the growing list of uses for this versatile technology. All objects radiate energy in the infrared spectrum, even objects at room temperature and frozen objects such as ice.Ī wide variety of security, surveillance, military, healthcare, and manufacturing applications use infrared cameras. Infrared refers to the region beyond the red end of the visible color spectrum and before the microwave region. 01 nm – 10 nm, penetrate deeper into an object, providing information about its internal structure. Infrared with wavelengths from 700 nm - 15,000 nm and X-ray with wavelengths of. The visible spectrum enables analysis of the surface layers of a component or an item. Inspecting the “Unseen” – Infrared and X-Ray This includes discrete part inspection for all types of containers, semiconductors, and PCBs, robotics control and guidance, surveillance and situational awareness, mail scanning and sorting, and web inspection of aluminum, steel, printed packaging, and non-woven materials. One thing to bear in mind when adding on extra weight, or when plugging in an accessory, is that your drone will have a shortened battery life and by extension a shortened flight time.Machine vision applications built around visible light encompass virtually everything you see around you. These will often not come with batteries of their own, and instead will require a power source, in which case you can plug it into a port on the drone. You can do this by getting a specialized light and camera to attach to the frame or gimbal of your drone.įor an add-on infrared setup, you can find small infrared cameras that could be attached to the frame of your drone. It is definitely possible to add certain types of night vision capabilities to practically any drone. How well you can read the image will depend on variations in thermal emissivity rather than on any type of light source. The range of vision for thermal cameras is quite a bit better, with the ability to “see” objects several hundred feet away.
In other words, objects would need to be quite close to the drone to be picked up by the emitted light and camera. Infrared night vision cameras will also have a fairly limited range of up to maybe 5 yards or so, depending on the strength of the infrared lights used by the camera. They may be able to pick up a light in the distance of up to a mile or more, but anything in shadow or dimly lit will not be seen well at all from a drone at night. How Far Can Drones See at Night?įor those with privacy concerns, you can rest easy knowing that a typical drone cannot really pick up a great level of detail from very far in low light conditions. These are a specialty type of camera that either has to be added on or bought as part of a whole drone setup. Most drones do not have night vision in the sense of having infrared or thermal cameras. The level of detail that a standard camera drone can pick up at night or in low-light conditions, however, it going to be quite a bit lower than it would be in the daytime, and you’re often going to have to deal with a graininess that often results from not enough light for the sensors to capture the image clearly. Basically, this means that they can pick up enough ambient light to capture a photograph that can be post-processed to make a readable photo. Most mid-level consumer camera drones have a decent ability to “see” at night in low-light conditions.
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