Bushnell 17369 2.5 x 42mm Night Vision Binoculars are a popular example of modern night vision gear.

Have you ever wondered what it would be like to have the ability to see in the dark? To be able to move about freely and foresee all obstacles that would otherwise be hidden in the dark of night? Thanks to the invention of night vision devices, we now have the ability to see in the dark. Animals have this biological capability, whereas humans lack a tapetum lucidum. With the invention of night vision devices, it has increased the benefits of hunting, camping, fishing, military uses and much more.

Night seeing devices were used during World War II and since then, they have expanded to include a generation of many more different types of devices including upgrading of original goggles, binoculars and scopes. During the war and even today, soldiers found these night vision devices extremely beneficial as they allowed them to see enemies, obstacles and shoot with little light available. The Army usually uses two types of night vision devices – image intensifiers and thermals. Image intensifiers increase the clarity of objects by amplifying the light that is available, even light that is there that cannot be seen by the eye alone. Thermals are often used to see in the dark by thermal imaging. Objects giving off a high temperature, for example, a person would show up glowing red and orange. Trees and plants would show up blue (cooler temperatures).

Night goggles or glasses are very common for the average person. How they work is by electronic means. Instead of depending on a light source to amplify vision, they use the the light that already exists to amplify clarity. They are extremely sensitive and can be used for all sorts of things. Soldiers can use them, you can use them to go hunting in the night, camping, fishing at night, marine and wildlife observation, security and probably for the average person – repairs. It’s convenient to have night goggles while you’re working on a flat tire in the middle of nowhere, than to deal with holding a flash light.

Night vision has grown to include not only goggles, but to night vision binoculars and night vision cameras. They are a great asset to have and have worked wonders for those who already use them. Having the capability to see in the dark has saved people’s lives, given them peace of mind, helped local authorities and has been an aid for everyone who needs to see when they really need it most. So, no need to be afraid of the dark anymore.

Related links: UK Goggles, UK Contact Lenses.

Save On: ClearSight 1 Day, Focus Contact Lenses, Acuvue 2 Contact Lenses, AND MORE!

Night Vision: The Ability to See in the Dark is a post from: Binoculars Direct | Eyeglasses | Sunglasses | Contact Lenses | Goggles

Olympus 118710 10 x 21 Outback Binoculars are portable and let you enjoy the view from virtually anywhere, then conveniently fold up.

Magnification: Magnification is simply the degree to which the object is enlarged. With a 7×35 binocular, for example, the object appears to be seven times closer than without the aid of a binocular. The number immediately following the “x” is the diameter in millimeters of the objective (front) lens. A 10×50 binocular, therefore, has a 10 times magnification with a 50mm objective lens.

Exit Pupil: The exit pupil refers to the size of the shaft of light transmitted to the eye. The more light, the better the contrast. You can actually see the exit pupil by holding the eyepiece of the binocular approximately 12 inches from your eye. It is the bright circle of light in the center of the eyepiece. Exit pupil is expressed in millimeters and is normally derived by dividing the power into the objective lens diameter. A 7×35 binocular has an exit pupil of 5mm (35 ÷ 7).

Field of View: The field of view is the width, measured in degrees or feet, of the viewing area you would see at 1,000 yards.

Prism Systems: Binoculars have left and right side barrels linked to each other by an axle. The two most frequently used prism systems are porro and roof. Porro Prism binoculars are characterized by the eyepieces being offset from the objective lenses. Roof Prism binoculars feature lenses positioned in line for a more compact design.

Resolution: Also referred to definition, is the ability of a binocular to distinguish fine detailand retain clarity.

Coated Optics: Optical glass surfaces are coated by magnesium fluoride to reduce light loss and glare due to reflection. Most binoculars are fully multi-coated to further enhance viewing and reduce eye strain. Some binoculars have a special image enhancing, amber, high contrast coatings.

WaterProof: This describes a binocular’s ability to remain completely dry on the inside when exposed to moisture or total submersion in water. Binoculars are sealed with O-rings and are filled with 100% arid nitrogen, which also resists all forms of moisture.

Stray Light: When light entering the binoculars reflects off of interior surfaces, the reflected light eventually exits inside the binoculars in the form of stray light. This unfocused light typically diminishes the image quality of the sight picture.

Focusing Range: All binoculars have the ability to be focused for infinity. So a primary point of distinction between binocular models is the minimum focus range. Birders tend to favor models with a short focus range of about 15 feet, but 20 to 25 feet is usually acceptable.

Twilight Performance: Using formulas gives a basic evaluation of low light performance, however, one must keep in mind that they are mathematical formulas and do not take into effect some of the most critical features in optics; glass quality, number of lenses, precision of manufacturing and coatings.

Binocular Terminology is a post from: Binoculars Direct | Eyeglasses | Sunglasses | Contact Lenses | Goggles

Binoculars always come in handy – whether you’re an avid hunter or an occasional theater-goer. They are essential gear for camping and hiking, a day in the field or a vacation trip to the grand canyon. Choosing the best binocular for your needs isn’t always easy. Consider when, where and how often you plan to use them in order to select a binocular with a combination of features that are right for you.

Standard Binoculars can be used for everything from nature observation to spectator sports.

Compact Binoculars are smaller and lighter in weight, and are a good choice to take along to the theater or concerts, or on hikes and hunting trips.

Wide Angle Binoculars are ideal for tracking fast-moving action across wide areas such as football fields, racetracks and wilderness terrain.

Zoom Binoculars let you increase the magnification when you want to get in close for details. From distant to near view, you get the best of both worlds.

Waterproof Binoculars deliver clarity despite foul weather conditions including fog, rain and ice. O-ring sealed and nitrogen-purged for reliable fogproof, waterproof performance.

Types of Binoculars is a post from: Binoculars Direct | Eyeglasses | Sunglasses | Contact Lenses | Goggles

Venus
The goddess planet will be most visible in the early evening. Look for this white planet after dusk in the west.

Mars
Mars is always one of the easiest planets to see because of its dashing crimson color. Look for a star in the sky that appears redder than the others, and chances are it’s the god of war. During this month, Mars will be most visible out west, and high above the horizon.

Jupiter
Though Jupiter is the largest planet in our solar system, it’s not always the most visible because of its distance and proximity to earth. May, however, is a good month to see it for all you early birds out there. Direct your telescope or binoculars right around the eastern horizon just before sunrise. As soon as the sun is fully displayed and the sky is blue, Jupiter will disappear.

Related pages and posts – Choosing The Right Telescope, Telescopes Terminology, Telescopes Online.

Want to get these alerts immediately? Just sign up to follow the Frames For America feed on Twitter at http://www.twitter.com/framesdirect.

Three Planets to See This Month is a post from: Binoculars Direct | Eyeglasses | Sunglasses | Contact Lenses | Goggles

Posts	Last Comment
How To Sight In Your Rifle Scope (9 comments) I need to know how to get the proper distance from my eye when mounting the CP1 Prismatic Scope on my 556 Sig Sauer AR15 with Picanny Rails. The scope is a fixed 3X. Thanks Gene [...]	Gene Skaggs 2010-12-29 10:19:35
Binocular Terminology (1 comments) i have two binoculars at home and both of them are Bushnell brand, it is a really good brand. [...]	Connor Bell 2010-08-11 21:56:30
Spotting Scope Terminology (1 comments) I am looking for a pistol spotting scope. I wear tri-focal glasses so I need something with a fairly large opening so I can quickly pick up the target. I don’t want to have to take my glasses off every time I look through the scope. I would like s [...]	Tom Meservey 2010-05-02 20:40:16
Range Finder Terminology (1 comments) I am looking to repair my Nikon buckmaster laser 800 rangefinder myself. Is there any place I can buy a replacement laser. Thanks for any help [...]	Joseph 2010-04-24 17:58:12

Powered by Blogthority BT-Active Discussions Plugin

Forum is a post from: Binoculars Direct | Eyeglasses | Sunglasses | Contact Lenses | Goggles

Canon 2897a002 10 X 30 water-resistant binoculars are a popular example of a compact binocular

Binoculars always come in handy, whether you’re an avid hunter or an occasional theater goer. They are essential gear for camping and hiking, a day in the field or a vacation trip to the most adventurous location. Choosing the best binocular for your needs isn’t always easy. Consider when, where and how often you plan to use them in order to select a binocular with a combination of features that are right for you. We have given you some pointers that we feel will help you make your decision, and enjoy your purchase to its fullest.

Standard Binoculars: Excellent all-around binocular for travel, hunting and sports. Ideal for a wide range of viewing. Comfortable size and weight. Great binoculars for a closer look at those unexpected sights. Optimum balance of magnification, brightness and field of view.

Compact Binoculars: Small Size, High Power Small enough to slip into pocket or purse; strong enough to carry you into the center of the action. Rugged outdoor models.

Marine Binoculars: Waterproof, Fogproof Protection These binoculars deliver clarity despite foul weather conditions including fog, rain, ice, and salt water. Standard equipment for serious sailors, avid hunters, and active sportsmen.

Zoom Binocular: Distant View, Near View Get the best of both worlds. Locate the action at a distance, then zoom in for closer inspection at the touch of a lever. Variable magnification lets you glide from the far turn to the homestretch. Great for tracking fast moving action across wide areas such as football, soccer, or racetracks.

Astronomical Binoculars: Power and Brightness Approach the power of a telescope with the comfort only delivered by a binocular. These binoculars are excellent for astronomy, surveillance, and nature study where close-up detail and long distance viewing are needed even under poor light conditions.

Binoculars Buyer’s Guide is a post from: Binoculars Direct | Eyeglasses | Sunglasses | Contact Lenses | Goggles

Twitter Weekly Updates for 2010-02-15 is a post from: Binoculars Direct | Eyeglasses | Sunglasses | Contact Lenses | Goggles

Twitter Weekly Updates for 2010-02-08 is a post from: Binoculars Direct | Eyeglasses | Sunglasses | Contact Lenses | Goggles

Buy Binoculars is a post from: Binoculars Direct | Eyeglasses | Sunglasses | Contact Lenses | Goggles

We have built a comparison pricing site that is very easy to understand, fair and with no bait and switch gimmicks. We believe people expect and want us to share our knowledge with them. They also expect to receive quality for their money. Binoculars-Direct.com is unmatched for providing the highest quality product selection with honest, straight forward offerings. We have managed to blend the sharing of our knowledge with our ability to bring you sport optic equipment comparison pricing for what we honestly believe is the best optical service company on the internet. Compare prices and make your purchase directly from reputable vendors in one stop.

cforms contact form by delicious:days

About is a post from: Binoculars Direct | Eyeglasses | Sunglasses | Contact Lenses | Goggles