2011-01-19T23:20:22Z http://nightvisioncamcorder.net/feed/atom/ WordPress admin <![CDATA[Camcorders with Night vision]]> http://nightvisioncamcorder.net/?p=124 2011-01-02T23:34:29Z 2011-01-19T23:20:22Z Camcorders with Night Vision

The growing popularity of Camcorders with night vision has captured the interest of both family oriented folks as well as adventure freaks. With camcorders you can not only click pictures or record those special family moments or celebrations together but also trap images at night when you are at such a place where there is no source of light such as forests or camping trips.  So whether it’s a late night fishing, hunting or even exploring those pitch dark caves at night the camcorders prove out to be handy light weight tools for people of all ages.

Camcorders with night vision also have infrared vision which enables a viewer to differentiate between two different images. It tracks this by detecting the temperature difference between two objects. In such a case you are able to identify the camouflaged being such as a hunted deer hiding behind the bushes. Depending on the quality of the product the night vision camcorders can record images even in low light as the battery comes well equipped with high power.


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Camcorders with Night Vision Considerations

While there are camcorders which come handy with night vision mode as their specific feature, you can always chalk out your priorities while buying a camcorder that suits your needs or purposes.  For example it’s important to check out whether the camcorder can be connected to your computer or TV or whether it takes still or moving pictures. Also find out if the pictures can be re-adjusted or picture quality more refined. This should at least give an idea about the basic technical details needed before you go for the purchase.    Besides this a clever way to purchase an appropriate model would be to first check it in the dark at some store especially if you are planning to buy online.  With more number of features the price too would keep on increasing. The price for a camcorder with night vision can range right from a few hundred dollars to some thousands of dollars depending upon the brand fame and technological features involved.  Camcorders with night vision mostly come with a good battery back up as most of them are specially designed for the night use.

Camcorders with Night Vision Prices

However, the picture quality should not be blurry or grained.  In case if you don’t want to spend too much for Camcorders with night vision then look out for the night-vision add-ons to your camcorder which costs nearly $35 to $40. But be prepared to face a quick battery down as the gadgets run on the camcorder battery power.

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admin <![CDATA[Night Vision Glasses]]> http://nightvisioncamcorder.net/?p=121 2011-01-02T23:07:57Z 2011-01-15T22:58:55Z Night Vision Glasses

Night vision glasses can be put into three groups such as binoculars, goggles or telescopes are efficient equipments meant to increase the night vision. The cost of such instruments can vary from anything beginning from a consumer product range of 100 US$ to as good as thousands of dollars. As designed by the US Army Night Vision and Electronic Sensors Directorate the Night vision glasses come in four main generations.

Night vision goggles

The most popular and versatile night vision equipments are the night vision goggles. They not only display real-time images but also allow the users to operate this system in the darkest and harshest of environments. They are well designed with premium optics, built-in IR illuminators and smart technology. It successfully accomplishes its purpose with people in military, civil or law enforcement and many more. The cost once again can range from a few hundreds to some thousands of US dollars.

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Although night vision goggles were earlier the great assets of military personnel or survivalists, the latest models hail in affordable reasonable rates for the family use who look for some safari adventure and have the curiosity to use such objects for fun. The ongoing range for such an instrument is as good as 79 to 80$ which is a dirt cheap price for the technologically dynamic instrument as this. The night vision goggles for sale are easily available in markets which target the ordinary crowd for whom this is a favorite traveling and picnicking asset especially the ones with children. Some known companies and brands dealing with the same are Yukon, Night owl, Bushnell, Pulsar, ATN and Zeiss.

Camcorders with night vision

One of the important uses of the camcorders with night vision is that it provides a pristinely clear view over the objects and properties at night. This kind of camcorder, better known as CCTV works efficiently in low or no light vision at all with security features as well. It gives good images even in darkness and you can track intruders clearly on the camera with ease and sharp quality of the instrument. A camcorder apart from being used for security purposes is also effectively used in filming during the night and for personal uses. It’s always better to prioritize your purposes of buying this camcorder rather than plunging hastily as the equipments are slightly expensive and designed for a specific purpose. Going through the technical aspects and researching a bit can help you in going for a night vision instrument that suits your choices.

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admin <![CDATA[Military Night Vision Goggles]]> http://nightvisioncamcorder.net/?p=116 2011-01-02T22:48:35Z 2011-01-12T22:42:20Z Military Night Vision Goggles

One of the most effective and useful instruments as military equipments are the military night vision goggles. Military night vision goggles come with a depth perception, a rugged exterior and are preferably light weight. Although exceptionally few models may come with infrared light options these goggles generally do not emit light and have a long battery life.

Military Night Vision Goggles Uses

Most of the military operations are conceived and carried out in the cover of darkness. The previous world wars witnessed the operations being carried out during the night. With the advent of night vision devices the battlefield transparency has increased and converted the night in to day. It has enabled the soldier to see clearly at night and thus has enhanced his effective coverage of infiltrators and enemies successfully through these instruments. In the initial days the night vision goggles were heavy and bulky and restricted employability but the recent modernization has made the technology more adaptable to suit the advanced and sophisticated needs of the soldiers.


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There are various types of night vision goggles depending upon their functions. The two main types are image intensifiers (II), and Thermal Imaging (TI). While image intensifiers use the ambient light for seeing the images at night, the Thermal Imaging detects the temperature difference between any two objects. This principle of heat applied with the latter helps the viewer to differentiate between objects such as the ‘camouflaged’ target and the identified things as bushes or trees clearly on the camera. This provides a degree of security and safety to the soldiers in combat especially during the total darkness when its difficult capturing proper images with normal vision due to their unmatched ability to maneuver and shoot without being detected in the dark. However some minor pitfalls could occur if the temperature difference between two objects remains the same.

Military Night Vision Goggles Alternatives

Despite the fact that such goggles are mostly used by military personnel there are people who for some adventure prefer using such instruments as their primary asset look forward to buying them. One of the suitable places for the same is searching online and you will come across various sites providing such hi-tech gizmos at reasonable rates. Some known sites on the net for Military Night Vision Goggles are Optics Planet, ATN viper night vision goggles, Cougar night vision Binocular goggle and Infrared 1. The prices of military night vision goggles can vary from few hundreds of dollars to some thousands of dollars depending upon the latest high technological features available.

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admin <![CDATA[FLIR Infrared Camera]]> http://nightvisioncamcorder.net/?p=106 2010-12-29T05:54:03Z 2011-01-08T11:22:58Z FLIR Infrared Camera

The FLIR infrared camera (Forward looking infrared cameras) and thermal infrared imagining are employed to scan wide regions, most commonly from aircraft and have various applications for SAR (Search and Rescue) . In open water, they can be employed during the night or day to scan the surface for a matter. They are beneficial on lakes, rivers or other large bodies of water where it may be hard to spot the place of a subject. Handheld thermal image cameras, similar to television units, can also be employed by rescuers on the ground or in helicopters. The more dynamic FLIR infrared cameras used mostly by aircraft are very costly.

Flir Infrared Camera Beginnings

FLIR infrared cameras were first employed in law enforcement in 1984 and employed thermal airborne imagining in a wide application of search environments. The application contains registering temperature variations of people, cars, trees and houses (so slight as to be almost nonexistent) and advancing these minimum resolvable temperature differences onto a television monitor. The application has currently become a widely accepted law enforcement source.

FLIR Infrared Camera Uses

The units themselves (a tough plastics Cyclops/ polymer Cyclops-looking ball) can be simply adapted to the mount on a common helicopter´s search-or spot light bracket. Attaching one takes only minimal time and it can be installed to nearly any helicopter. The sensor moves up and down as well as from right to left, and is mastered by handheld (computer linked) joystick that has different toggles and buttons to mater field of view switching, optimal signal presentation, and travel sweep. For lots of units, the excelling operating altitude is amidst six hundred and eight hundred feet where a three hundred to four hundred and fifty foot wide ground swatch can be viewed.


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On the imagining monitor (if white is chosen as warm) the eerie, almost photo negative type picture will show tree branches on a cold winter´s night as warmer (almost white) with tree trunks (which lose less heat) being darker. Houses show up distinctively radiating white through glass windows, while cars show a distinctive glow wherever their engines are placed.

Tests and actual searches tend to be more successful at night when ambient temperatures are most uniform and no artifacts of localized heating by sunlight distort findings. Forested areas can be penetrated well, even though dense leaf growth or evergreen cover requires greater operator skill to detect visual differences. The FLIR infrared cameras have been experimented and employed under actual conditions of extreme cold, rain, snow and fog and different forms of wildlife are clearly visible, as are tracks in the snow.

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admin <![CDATA[Infrared Thermal Camera]]> http://nightvisioncamcorder.net/?p=104 2010-12-29T05:54:41Z 2011-01-05T05:30:12Z Infrared Thermal Camera

An infrared thermal camera is which basically works on the infrared light spectrum. This article is about such cameras that work with the help of infrared radiation.

The above rays like ultra violet ray, infrared ray, x-ray, gamma ray etc can be differentiated according to their wave length. While talking about infrared thermal camera, the images formed will have a single color because it does not differentiate the various wavelengths of the infrared radiation. Truly speaking, if the object’s temperature is high then the infrared radiation emitted will be more

These special cameras can work in total darkness also and do not need any form of ambient light to function. In smoke filled buildings as well as underground areas this technology can be used. An Infrared thermal camera can be placed into two classifications. The first classification is is the cooled infrared detector and the second one is the un-cooled infrared detector. Both of these are explained further below.

Cooled Infrared Thermal Camera Detectors

The cooled infrared detectors are mostly contained in Dewar or sealed vacuum case and are cooled cryogenically. It uses a range of semiconductor materials and the cooling is essential for their operation. Depending on the technology implemented, the working temperature ranges from 4K to room temperature. You can find some of the latest cooled detectors operate in the temperature range from 60K to 100K. This will be according to their type as well as performance. If cooling is functional in this equipment then it would be flooded by the radiation contained within.


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Un-Cooled Infrared Thermal Camera Detectors

The un-cooled infrared detectors use a sensor which operates at an ambient temperature. Some of the detectors use a sensor which works on temperature that is stabilized to ambient. The modern technologies use un-cooled thermal cameras which can be operated by changes in voltage, current and resistance when heated by infrared radiation. Such changes are needed to be measured and then compared with the normal operating values of the sensor. This equipment reduces image noise as it can stabilize to a specific operating temperature. These cameras are smaller than other types which make them cost effective.

Now a day, thermal cameras that use infrared are very common in today’s market. It provides high quality images without the high cost. They are readily available from many websites. So if you are on the lookout for a good infrared thermal camera check out some of the many camera manufactures online.

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admin <![CDATA[Night Vision Goggles for Sale]]> http://nightvisioncamcorder.net/?p=114 2011-01-02T22:53:08Z 2011-01-02T22:37:10Z Night Vision Goggles For Sale

Night vision goggles are an attraction and a tool of necessity which have exceeded their limitations from military or law personnel to ordinary ‘inquisitive’ beings. The goggles are hands free, light weight, provide 1:1 magnification, provide excellent comfort and are easy to operate. Right from personal security to adventure and thrill the use of night vision goggles have simply grown tremendously. The market therefore has come up with a wider range of such instruments keeping in mind customers from all corners wanting to purchase night vision goggles for sale. The price for the same can range right from a few hundred dollars to as good as a few thousand dollars depending upon the technological features and brand name.

When To Buy Night Vision Goggles For Sale

With the arrival of festive season the prices of various technical products comes down or are available at reduced prices. What matters now are your priorities associated with such gadgets. If your purpose is night adventure then a night vision goggle is an apt choice as it is compact and can easily be carried in a small bag or pouch.


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Although the night vision goggles are primarily designed in the goggle fashion, these can also be used as a monocular or can be attached to a camera for night time photography. The most advantageous feature of night vision goggles here for both military as well as other security uses is its ability to show clear images even in total darkness which means at places where there is no source of light such as pitch dark forest areas or thick bushes. The infrared night vision goggles can detect the difference between two unidentifiable objects by detecting their temperatures. However if you need to track animals or birds then the right instrument for you would be binoculars. What more than the latest models come specially designed and featured with characteristics suitable for ‘any one’ and at cheaper rates.

You can also purchase them online. The detailed technical features along with price quotations are mentioned online for the viewer’s knowledge. For all those who are looking for some quality oriented Night vision goggles for sale online should stop here for some known brands which sell these products extensively and with discounts. They are Tracker, Yukon, ATN Viper, Luna optics, Night Owl explorer, and ATN Night cougar and so on.

So why wait. Just dart ahead and grab every opportunity of purchasing your favorite night vision goggles for sale.

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admin <![CDATA[Thermal Infrared Imaging -Advantages and Disadvantages]]> http://nightvisioncamcorder.net/?p=98 2010-12-29T05:55:06Z 2010-12-29T01:32:26Z Thermal Infrared Imaging

Every sensor has its own advantages and disadvantages; a principal benefit of employing an imagining sensor (thermal infrared imaging) is that it supplies the ability to detect objects over situations of restricted visibility. Conditions of restricted visibility such as night and the presence of obscurants (light haze, and smoke and light dust) have a low attenuating effect on long wave infrared waves. Our choice of a thermal infrared detector yields an operating band of seven to fourteen um in the electromagnetic spectrum.

Thermal Infrared Imaging Bands

Long wave infrared has a benefit over the other bands in the infrared region: near infrared, short wave infrared and mid wave infrared. The long wave infrared band yields the highest thermal radiance for the range of ambient and non-heat producing objects area temperatures faced by an autonomous mobile robotic system on Earth. However, we will not some disadvantages of employing this sensor right now.

A minor disadvantage is that the thermal infrared imagining camera can’t discriminate amidst the radiance found at each wavelength. Thus, in contrast to how the human eye can distinguish the colors blue and red, the thermal infrared imaging camera only sees a total radiance from the whole long wave band of wavelengths. However, this deficiency is tolerated for our application since the FPA of detectors in the thermal infrared imaging camera receives different levels of radiance across the two dimensional array to yield a thermal image with related gray level values.


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Since our application takes place outdoors, environmental conditions will exist where the surfaces of a target and surrounding objects will emit approximately the corresponding standard of thermal radiance. This uniqueness, called as thermal crossover, aftermath in reduced thermal contrast amidst the surfaces of objects and the surrounding environment within the thermal infrared camera´s view field.

Thus, these periods of thermal crossover could result in a limitation in our ability to classify non heat generating objects in an outdoor environment using a thermal imaging sensor. One attainable crucial disadvantage of employing a thermal infrared imagining camera for autonomous mobile robotic applications is that glass is opaque to infrared radiation. Consequently, a bot won’t be capable to identify objects that are behind glass.

Thermal Infrared Imaging Drawbacks

The drawbacks seen with any sensor apparently supply the reason why multi sensor data fusion systems are basically more successful in classification applications than system are generally more successful in classification applications than system with a single sensor. Consequently, a thermal infrared imaging camera will maximize the detection of thermal radiance emitted by an object compared to detectors that operate in the near, mid wave infrared and short wave spectral bands.

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admin <![CDATA[Can I Use Night Vision In Complete Darkness?]]> http://nightvisioncamcorder.net/?p=79 2010-10-19T07:33:25Z 2010-09-22T03:07:19Z

Night vision devices work on a technology that enhances available light from environment many times to enable the user visualize in complete darkness or night. It allows vision at night. These devices are highly sensitive to light and the slightest amount of light is sufficient to make vision possible.

Photons that are available in light enter the cathode and as they pass through the tube get multiplied many folds and thereby eliminating huge amount of photons that makes visibility possible. Hence some amount of light is completely mandatory to visualize objects in complete darkness. Generation 1 night vision devices needed more light however with time technology has upgraded night vision devices to a level where vision is possible with bare minimum light source.

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As an answer to the above direct question as direct answer would be NO! It is not effective to use a night vision device in complete darkness. But what seems to be complete darkness may not be a retarding factor in using night vision device. Generation 3 night vision devices are highly sensitive to light and are capable of detecting minimum available light. Light energy from natural sources such as moonlight, starlight or infrared light can be sufficient in enabling vision by use of a night vision device. Infrared light is invisible to human eyes and hence its presence can only be detected with a camera. So what seems to be complete darkness may also allow possibility of vision through a night vision device.

Technology has developed devices and solutions to enable vision in complete darkness in jungles, canyons and cloudy nights. Today many night vision devices today are coupled with infrared illuminator that makes it possible to see even in complete darkness. Infrared light is invisible to human eyes however camera lenses are capable of detecting infrared radiations in complete darkness.

Use of infrared or IR illuminators in dark is a very good solution for viewing objects in complete darkness. In closed environments it is usually completely dark and an illuminator can ease visibility with night vision devices. Illuminators provide enough light for clear and sharp objects and images and thereby clarity in vision. Many night vision goggles come with inbuilt infrared illuminators for closer focus and large distance viewing. When light is less the quality of picture or image produced is also of low quality. So an illuminator comes in handy in complete darkness and at places where light is less and a low quality night vision is used for viewing.

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admin <![CDATA[What is a Infrared (IR) Illuminator?]]> http://nightvisioncamcorder.net/?p=77 2010-10-19T07:37:36Z 2010-09-22T02:45:33Z

Infrared illuminators are devices that illuminate objects or areas that are scanty in light. Mostly used in photography to illuminate objects present in dark or poorly lit environments. This is the most typical use of an Infrared IR illuminator.

Infrared lights are electromagnetic radiations which has wavelengths larger than visible light and shorter than microwave radiations. In the absence of visible light infrared radiations enables visibility of objects. Infrared cameras use IR radiations to focus objects but when the focus is not strong enough an Infrared illuminator is to be used to provide enough infrared light for taking a picture.

One common use of infrared illuminator is CCTV or closed circuit televisions used for capturing pictures with better clarity even the dark. Infrared lights are not visible to human eye whereas cameras can detect and capture infrared radiations. This is where infrared illuminators come in handy for surveillance television; they detect infrared lights which human eyes cannot capture. Lighting infrared illuminators in dark areas is a good way of guarding a place with a CCTV. Since infrared lights or illuminators are not visible to human eyes they are used in bedrooms in the night without disturbing ones sleep.


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Thus Infrared illuminators are a group of infrared LEDs brought together to illuminate a area with infrared light.

Infrared Illuminators emit infrared light which are widely used. Some of the important applications of Infrared illuminators are as below.

Night vision Equipments

All night vision equipments use infrared illuminators to make objects visible in the night. They are enhance visibility where light is very scanty.

Thermography

Infrared radiations from IR illuminators are used to roughly estimate temperature of an object. This method is called thermal imaging which is more popular in industrial and military applications. Commercially this technology is used in infrared cameras for cars.

Heating

Infrared illuminators are used for heating as infrared radiations form Infrared illuminator are source of heat energy. Infrared Sauna uses infrared radiations to heat occupants and also to remove frozen water from aircraft’s wings.

Today infrared radiations from illuminators are used for curing diseases and for physiotherapies as well. They are safely used in households for heating and cooking food. It is because they only heat objects without heating the surrounding environment.

Manufacturing industries too use infrared illuminators for annealing, print drying, curing coatings, melting plastics and many more. They have replaced conventional methods of heating in all industries.

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admin <![CDATA[What Does Gen 1, Gen 2 and Gen 3 Mean?]]> http://nightvisioncamcorder.net/?p=72 2010-10-19T07:40:46Z 2010-09-22T02:20:51Z

Night Visions devices have undergone sea of changes since they were first developed way back in 1960’s. Gen 1, Gen 2, and Gen 3 are abbreviations of “Generation”. Gen 1, Gen 2, and Gen 3 refers to various stages innovation in the development of technology or product. Every generation produces a product with enhanced technology.

Here’s an overview of Gen 1, Gen 2, and Gen 3 night vision equipments.

Evaluation of night vision equipments are done on two major criteria. Light gain measures the degree to which available light (in dark) is amplified by night vision device. Resolution measures the sharpness and clarity of an amplified object.

GEN 1

The very first night vision device or equipment developed in 1960’s were very popular and in great demand among consumers. Consumers had great fun using these Gen1 night vision equipments. They were primarily developed for military use. This generation of night vision devices consisted mainly of simply configured tubes of image intensifiers. This imaging tube had photocathode, a phosphorous screen and were vacuum sealed. Light gain and resolutions were on lower side compared to next generation night vision devices.


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GEN 2

After 20 years of invention of GEN 1 night vision equipments, GEN 2 was developed. GEN 2 was made up of different and better tubes. Micro-channel plates were the distinguishing features of this generation of NVD which enhanced the products. MCP or micro channel plate had a honeycomb like look where every cell had a multiple channels for letting the electrons entry. These MCP’s were located midway between photocathode and the phosphor screen which allowed up to 1000 electrons to hit the screen. Thus the MCP was able to enhance the light by almost 1000 times resulting in a brighter image with better resolution. Obviously they were more expensive than GEN 1 NVD and were put to use in professional surveillance and intentional uses.

GEN 3

While GEN 3 night vision equipments were more advanced, they continued use of MCP’s and introduced Gallium Arsenide photocathode or (GaAs) photocathode for improving the equipment’s sensitivity towards light. GaAs allowed more than 1000 photons that are more than what MCP did in GEN 2 night vision devices and hence was able to deliver brighter pictures on the photo screen. GEN3 NVD is latest innovation in NV technology and is the most expensive NVD of all. These equipments produce best images in least available lights. Thus they are best applicable in forests and canyons which are barely lit.

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