Night Vision Cameras. Protection in the Darkest Night
Night Vision Cameras. Protection in the Darkest Night
By Trendon Cato
What exactly is the purpose of a security camera, what were they invented for? Well as far as I am concerned as well as any one who owns one or even back to the person/s who invented it was to inhibit criminal activities, to capture the criminal right in the middle of the act on camera. But here is the problem that we face, crime does not only happen in the day but also happens at night but not all cameras work well at night without the aid of an additional external light to aid it. For one thing, it is an extra overhead expense on a companies part and particularly for nature conservationist who use cameras to monitor animals in their natural habitat at night this would hinder there progress. For that specific reason one such camera exist that takes care of this problem, night vision security cameras.
The thing is most security cameras have the ability to produce relatively decent pictures in dim or low light but is an impossibility for them in total darkness, which is the weakness in most cameras. As previously stated this is where night vision security cameras come in, but with one slight disadvantage in that the current generation cannot record in color but in black and white. There is however an option of getting those equipped with a hybrid configuration that allows it the ability to produce color images in good lightning but returns to black and white in night vision mode. This however is an aside considering it does its job and keeps view of the surroundings even in the dark.
There are many shows and movies on television depicting night vision goggles and cameras whereby the image produce is something like a green background or coloring with shadows for images. What you should know though in reality images produced from the night vision security camera are somewhat similar but however the actual quality and detail or the produce images are much more defined and therefore are liked more by people in comparison to what is seen on television.
Is a night vision camera and an infrared camera the same?
Are they? No, they are not he same. Most confuse the two and think that night vision cameras use infrared to film images. However, they could not be further from the truth. Infrared security cameras utilize the heat emitted from an object to aid it in capturing images and make them visible. This in movies is usually depicted as a yellow and red image against a black background projecting the difference in the heat produced between the object in view and the surrounding area. A night vision camera on the other hand however is equipped instead with small light that is emitted to focus on a specific object in order to record the image.
Now if you intend to utilize a night vision camera to view what goes on around an object this should be a job done by an experienced professional or on the advice of one familiar with these cameras. This is so because of external light appearing from the surrounding areas can confuse the camera into thinking there is more light present than really is there. This more or less then obstructs and interrupts the internal mechanism that automatically switches camera modes and renders a disorganized video. Just to say, it fools the camera and makes it use less light than normally needed making it unable to get a proper picture.
All said and done, the price tag on one of these cameras while not exactly ridiculous, still when you look at it is more reserved to locations or to persons who have that extra amount of funds to spend on their personal security.
About the Author: Security is and always was a problem and is becoming more and more something we need to deal with. Just using security guards alone can not work anymore you something else. You need to start to upgrade to security camera systems. Find out what you need at Shinkeno Security Camera Solutions
Source: www.isnare.com
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The Many Uses of Thermal Night Vision Technology
The Many Uses of Thermal Night Vision Technology
Thermal night vision makes use of temperature to spot a person, animal, or object. This tool detects heat and produces images that reflect the placement of that heat. Most often incorporated into night vision goggles, the technology is used by law enforcement officers and hunters. Though less common, thermal night vision is also being incorporated into video cameras for better night shots. Another place one might find thermal imaging is in detecting mold or poor insulation.
Thermal imaging, especially in the use of night vision goggles, allows a person to see another being without being seen. Unlike older versions of the technology or using flashlights, the light is not visible to the other party. Current gear is also much lighter than previous models.
Law enforcement officers might use thermal night vision to tail a fugitive or investigate the scene of an accident. Often the technology is attached to law enforcement vehicles. This equipment shows heat images from a distance, so long before a vehicle is apprehended; an officer can see the make and model of a car. Military personnel and firefighters also use the technology for their duties.
Thermal night vision is used for security cameras. Security cameras with thermal imaging technology can detect activity in any area, even if it is not well lit. Many security systems come with a simple, wireless set-up and are low cost.
Photographers and videographers also make use of thermal night vision. Photographers use it to take digital SLR images under low light or even during the darkest time of night. Movie directors also use this technology to film night scenes.
Thermal night vision is useful for construction workers and home inspectors. Since thermal night vision products detect heat they can also spot places where there is not enough heat. That helps a person see if the insulation in a building has worn down or is missing. It can also detect radiation leaks.
The same technology aids workers in detecting the potential for moisture and mold problems. If there is a vast difference between the temperature inside and the temperature outside, it can create moisture problems. Inspectors can use thermal imaging to compare the temperatures inside and outside a home, spotting and potentially preventing mold and mildew problems.
Uses for thermal night vision abound. Some common uses are law enforcement, mold detection, photography, and security. It is also used in hunting, particularly in the use of thermal night vision goggles. The technology works by detecting heat and projecting images from the data. In law enforcement, it can be used to catch suspected criminals.
