What Are Some Uses For Infrared Camera Lens Filters?(Part One)

Infrared might be the kind of term that implies to many people high technology that is only applicable in the world of special military operations. In actuality, it is a form of photography that can be very artistically pleasing. Moreover, it has a range of practical uses across a variety of professional platforms. Infrared is really quite accessible technology and, in fact, all that is required to use the technology is a lens filter for a photographic or video camera.


Why Shoot Infrared Photos and Videos?

Shooting photos and videos in infrared has numerous artistic and practical applications. For those interested in the former, the infrared spectrum brings out details in a scene that would remain hidden if the scene was shot in normal color. Infrared photos have incredible clarity and extraordinarily sharp contrast. Filtering out ordinary colors and leaving a monochrome also adds an element of surreality to scenes, as if they taking place on another planet.

The ability of the infrared spectrum to bring otherwise subtle details into sharp focus has given infrared photography and videography real-world applicability as well. Many branches of science use infrared photography. Botanists are better able to observe cellular material in plants, and astronomers can capture clearer space images, for example. Infrared photography also helps doctors see vascular systems beneath the skin. Militaries have been using infrared photography and videography for decades to increase the efficacy of their operations.

Whether practicing an art form or attempting to capture details to better perform a professional task, infrared photography and videography helps the human eye see things that it otherwise cannot and greatly assists in the achievement of both artistic and practical goals.

How Do Infrared Camera Lens Filters Work?

On the spectrum of light, the human eye can only see between wavelengths of 400 and 700 nanometers. These wavelengths determine the colors that people can perceive. Infrared light is past 700 nanometers on the spectrum, which is generally imperceptible to the human eye.

Camera lenses are designed to let light at wavelengths of between 400 and 700 nanometers pass through in order to capture colors the way the average human eye sees them. An infrared lens filter employs opaque glass to absorb all of this visible light, allowing only light at the infrared end of the spectrum to pass through the lens and hit the film or image sensor, depending on whether the camera is film or digital.

Most digital SLR cameras are actually designed to block infrared light, but those photographers interested in shooting infrared photography with digital SLR cameras can still do so with an infrared filter. Colors may appear strange and a tripod will likely have to be employed because the shutter needs to be held open for a long time due most light reaching the sensor being blocked. Converting the photos to black and white will likely achieve the monochrome effect desired in infrared photography.

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Thermal Imaging Systems for Public Transportation Safety

20160114Thermal Imaging in the Transportation Sector

While the transportation sector continues to grow in revenue, size and scope, so too does the risk associated with maintaining public safety. The transportation industry must seek out more comprehensive solutions to bridge the gap between the capabilities of conventional video surveillance and the vulnerabilities created by a lack of ambient light, challenging environments such as fog or haze, long range detection limitations and glare from external light sources.

  • Mass Transit and Passenger Rail As the general public becomes more reliant on mass transit as a means of transportation to and from work, rain or shine, from dusk until dawn, existing security infrastructures must be improved to provide the necessary level of safety to mass transit and passenger rail patrons.
  • Aviation Maintaining active surveillance, alerting security personnel to potential threats and long-range detection capabilities remain prevalent challenges for perimeter security at airport facilities.
  • Commercial Distribution The past several years have seen an increasing rate of theft in freight delivery and shipping operations. Organized crime efforts are more frequently targeting consumer goods that can be easily sold on the black market.

Improving Operational Efficiency and Safety

The evolution of thermal imaging continues to enable Security Systems Integrators with more efficient surveillance, more comprehensive coverage and lower false alarm rates. In the transportation sector, safeguarding pedestrians and maintaining surveillance of valuable cargo can be more wholly achieved through the implementation of IP networked thermal camera systems.

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Thermal rifle scopes


Thermal rifle scopes and weapon sights are by far the coolest optical devices you can install on a weapon. Not only do they offer the flexibility of daytime and night time use, but they also deliver in weather conditions when other optical devices simply fail. Fog is one such example. Like all other thermal imaging devices, thermal rifle scopes read off thermal signatures of all objects and present the user with an image showing a gradient map of the heat signatures. Most modern thermal rifle scopes feature several color palates as well as the all time standard black and white. Another fantastic feature of thermal rifle scopes is their ability to output video signal. by means of a special portable digital recorder you can now easily record your hunts to show friends and family.

When picking a thermal rifle scope, it is important to understand what you should be looking for. Key components of high importance are objective lens diameter, resolution and refresh rate of the thermal core, magnification capabilities, reticle patterns and battery life. Most popular scopes are typically 3x 42mm lens thermal scopes with 60hz core. Such a device will handle really well for hunting in the range of 200-250 yards.

Another important point to note is the difference between night vision rifle scopes and thermal riflescope. Night vision optics in general present you with the real picture of what is in front of you by simply making those items more visible than they are to a naked eye. Thermal devices work differently. Due to the fact that thermal scopes read and reproduce on display thermal signature of an object, you cannot expect to see all details of the object you are looking at. You will only see an outline of items which have contrasting temperatures. This makes thermal less practical when dealing with target shooting and when identifying specific features of an animal very important.

Probably the most common use for thermal riflescope is for hunting pigs. At Night Vision Guys we try to stock as many popular thermal rifle scope models as possible to avoid long assembly wait and to bring the scopes to you as quickly as we can.

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Thermography drone for aerial recordings

Thermography has become an important topic in the industrial and construction sectors in the past few decades. A new development in this area consists of thermographic inspection from the air. Combined with drones, thermal imaging cameras can be particularly useful for inspecting photovoltaic systems. Thermal imaging camera drones are also being used for the thermographic inspection of inaccessible buildings or electric power lines as well as for firefighting and law enforcement jobs. The technology could also be implemented for other industrial applications, research and development, cutting edge aerial archaeology or nature and animal observance.

Prior to the use of drones, overviews of larger photovoltaic systems could only be thermographically examined from higher locations and buildings using skyworkers or elevated photography tripods, which required extensive effort and was quite inflexible. Clients are dissatisfied with this and therefore developed the idea of a thermal imaging camera drone to inspect photovoltaic systems and larger buildings.

Measurement and testing solutions

With its three divisions datacom (measurement, logging, analyzing, optimizing, testing and managing networks and applications), industrial (measurement technology for EMC, HF, thermography, output, signal analysis, data recording and laboratories) and fiberoptics (fibre optic measurement and splice technology, optical components, CATV), we provide commercial Total Testing Solutions from a single source.

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HD video downlink

The drone uses an HD video downlink to send the live thermal image to one or more monitors (e.g. to a monitor for the thermographer and simultaneously to a tablet PC for the person controlling the drone). To achieve this, the overall solution uses the camera’s HDMI port and its own HD downlink solution to transmit continuous nonradiometric thermal video of the entire flight in HD quality and can include the MSX image if required. The overall solution also uses a self-developed solution to control the camera, which includes taking a radiometric thermal image while simultaneously performing visual recording.

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