Tuesday, April 21st, 2009 at
8:14 am
The night vision systems that allow viewers to observe objects at night are night vision goggles. These work in the dark and provide good quality images.
The night vision goggles function as follows:
Light from an existing source like the moon or the stars is gathered by the front lens of the night vision goggles. This light then travels to the photocathode tube which converts the photons into electrons. Different chemical and electrical processes are applied to the electrons to increase them in number. The electrons then strike a phosphorous screen where they are converted back to visible light and the image thus formed is viewed by the observer.
The night vision goggles are available at different costs. To buy cheap night vision goggles, the best place to start a search is the internet. To search for cheap night vision goggles one can use any search engine and type “cheap night vision goggles”. A number of results get displayed for the user. Although night vision goggles are very expensive, cheap night vision goggles are also available.
Some cheap night vision goggles available in the market are:
1. ATN viper night vision goggles
: These cost around $ 270. These goggles can be attached to a camera and provide good quality images.
2. Night owl explorer
night vision molecular goggles: These cost around $ 480. These have a built in photocell and an infrared illuminator. They can be attached to a camera and provide good quality images in pitch darkness.
3. Night Optics USA-D-2MV
: Considered to be cheap night vision goggles, they cost around $ 650. These have a built in photocell and are very light weight.
4. RIG 3250- These cost around $ 650. These cheap night vision goggles have an inbuilt infrared illuminator and provide the best quality of images when objects are observed in complete darkness.
Cheap night vision goggles are used by military, hunters and campers as they help in getting a better view of the surroundings in complete darkness.
Technorati Tags: cheap night vision goggles, gogles, googles
Thursday, April 16th, 2009 at
10:10 am
Infrared night vision technologies have been launched to get better night vision systems as they produce brighter and clearer picture comparatively. These incorporate some illuminators that in turn produce high level of light (infrared). This results a picture of high resolution. These allow the customers to get effective imagery even in extreme light conditions. Infrared night vision goggles are widely used for government, residential and in commercial areas to ensure utmost security.
Infrared night vision goggles have been also made to be mounted over the helmet to view the darker images. Now-a-days, these are widely used by armed forces to fight even in the dark environment. These enable the viewer to see the objects situated at the distance of 50 feet.
Infrared night vision goggles for kids
For kids, special night vision goggles like night vision infrared stealth goggles have also made available and also are comparatively cheap. These night vision goggles are basically manufactured from heavy plastic and come with head strap ensuring protection. The stabilization is done by jaw straps edged on the sides; also you can customize the setting by employing adjustable straps.
Online availability
A wide array of infrared night vision goggles have been made available in market area by several leading brands, each having its own specialty. Also you can purchase these night vision systems though online shopping in quite reasonable price rates. Various expert online retailers are involved in this business and also you can take the maximum advantage from the wide variety available with full description.
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Technorati Tags: infrared night vision goggles, night vision gogles, night vision googles
Sunday, April 12th, 2009 at
10:52 am
The Bushnell night vision goggles are one of the finest qualities night vision devices produced by Bushnell. The Bushnell night vision goggles are compact in design, have a rugged look and are light weight. Bushnell night vision goggles are best suited for conditions where light is very poor.
Bushnell Night Vision Goggle with Headgear
The Bushnell night vision goggles receive light from the source on the objective lens. All Bushnell night vision goggles have an image intensifier tube. The light collected on the objective lens is passed to the image intensifier. The image intensifier consists of a photocathode which converts the photons into a number of electrons under the force of chemical and electrical reactions. The electrons are then made to strike a phosphor screen by an electrostatic field. The electrons then get converted to an image of the object being observed.
Bushnell night vision goggles have an inbuilt infrared illuminator. This infrared illuminator is used to produce best quality images in areas where there is low light. In most cases, there is a dual infrared illuminator where the illuminator can be adjusted according to the needs of the user and the type of light available.
A variant of the Bushnell night vision goggles that is very popular is the Digital night vision goggles. The Bushnell’s digital night vision goggles collect light from the objective lens. The light collected is passed to a charge coupled device which is generally a CMOS chip which converts light into electrons. The electrons are then focussed onto a micro display. The image is then formed on the micro display which is an LCD screen that displays the image with the best resolution possible.
Features of Bushnell night vision goggles
1. Bushnell night vision goggles are compact and light weight.
2. The image formed by the Bushnell night vision goggles is clear and remains constant because they have a high resolution.
The Bushnell night vision goggles are suitable for camping, patrolling buildings like warehouses and exploring caves.
Technorati Tags: bushnell night vision goggles, night vision goggles, night vision gogles, night vision googles
