Bushnell Binocular Parts

    binocular parts
  • Birding binoculars have three basic elements: the front lenses, the rear lenses, and the prisms. The front lenses are called the objective lenses. They gather the light and focus an image of the object inside the binoculars. The rear lenses are called the eyepieces.
    bushnell
  • Bushnell Corporation, also known as Bushnell and Bushnell Outdoor Products, is an American company specializing in optics and imaging.
  • Bushnell is a city in Sumter County, Florida, United States. The population was 2,050 at the 2000 census. According to the U.S Census estimates of 2005, the city had a population of 2,119. It is the county seat of Sumter County.
  • American inventor who in 1775 designed a man-propelled submarine that was ineffectual but subsequently earned him recognition as a submarine pioneer (1742-1824)
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bushnell binocular parts - Bushnell H2O
Bushnell H2O Waterproof/Fogproof Roof Prism Binocular, 8 x 42-mm, Black
Bushnell H2O Waterproof/Fogproof Roof Prism Binocular, 8 x 42-mm, Black
Spend enough time on the water, and your equipment will spend some time in it. That's why Bushnell had the foresight to build the H20 series of binoculars, which are O-ring-sealed and nitrogen-purged to complete lock out moisture should you spill water on the housing, take your binoculars overboard, or simply run into foul weather along the way. The H20 binoculars feature rubber armoring with textured pads to give you a sturdy grip in slippery situations. More significantly, the binoculars' multicoated optics and premium-quality BaK-4 prisms maximize light transmission and image clarity, so you can enjoy a clear view of the Orcas in the distance or the fast-approaching coastline. You'll quickly see how a little planning on Bushnell's part goes a long way in magnifying your adventures on or around the water. Other features include twist-up eyecups, a large center focus knob for easy, precise adjustments, and a long eye relief.

system components
system components
Here are the basic parts of the system: at left, a standard 7x21 Bushnell Sportview Compact binocular; at lower right, the front lens, 50mm in diameter and about 150mm focal length; and at upper right, the piece that I made out of 2mm thick ABS plastic sheet to attach the lens to the binocular. The strap that holds the mount onto the binocular is just some adhesive backed Velcro - hook on one piece and loop on the other, each piece just folded back and stuck to itself to attach it (the hook piece had a lot of sticky back side left over, so I just stuck some fabric onto that to cover up the sticky stuff). As I mentioned above, there is a 49mm skylight filter glued into the big round hole in this plate, with its male filter thread facing forward to receive the front lens. In addition to providing a way to mount the lens to the binocular, the plate also blocks any stray light that would otherwise enter the binocular from around the edges of the front lens (which would not be a good thing for clear viewing). You can use any positive lens that you can find and fit. The only real limitation is that it must be large enough to get a view through it with both objectives, but you don't need 100% of the objectives to come within the diameter of the lens. A shorter focal length will give you more power but a shorter working distance, while a longer lens will give you more space at the sacrifice of some power. Very short lenses will require increasingly high quality to avoid visible aberrations, and when you get shorter than 100mm or so viewing becomes less comfortable - I think because of a mismatch between the power and the lens separation, you reach a point where your eyes don't want to combine the images if the power is too great. Even a very long lens like 500mm, although it doesn't compute as a magnifier per se, still allows you to focus a 7 - 8 power binocular at a distance of a half meter, with obvious advantages for observing small living (or otherwise potentially dangerous) things.
Binocular Necklace
Binocular Necklace
This is part of my product photos for an online jewelry store (CATBAG) I had. El Paso, Tx. 2011. Viridiana Villa.