Understanding How Waterproof Binoculars Work
Binoculars are essential tools for birdwatching, hunting, outdoor activities, and even marine navigation. However, using binoculars in extreme conditions such as heavy rain, fog, or water splashes makes them prone to damage due to water exposure. Waterproof binoculars, with their advanced technology, have solved this problem by being equipped with special features that prevent water damage. Here is how waterproof binoculars work:
Waterproof Coating
The optical lenses of regular binoculars are made from glass materials that easily get damaged by water. On the other hand, waterproof binoculars come with lenses that feature waterproof coatings that prevent water from entering or sticking on the surface. Additionally, the coatings improve light transmission, clarity, and contrast of the images captured. The coatings vary from one brand to another, and some of the popular waterproof coatings include hydrophobic coatings, rain guard coatings, and nanotechnology coatings.
Sealed O-ring Mechanism
Waterproof binoculars have a unique design that prevents water from leaking inside the binoculars. The optical system, including the lenses, prism, and eyepiece, are hermetically sealed using a special O-ring mechanism that prevents water from entering. O-ring seals are made of high-quality rubber materials that withstand water pressure and temperature variations. Additionally, the O-ring seals also prevent dust, debris, and other particles from entering the binoculars, thus keeping them clean and functional.
Fog-proof Functions
Waterproof binoculars have an additional feature that prevents fogging inside the binoculars. Fogging occurs when warm colors get into contact with cold surfaces, leading to the formation of water droplets that distort the images. Waterproof binoculars are equipped with special nitrogen or argon gas that fill the internal space, thus preventing fogging. Some of the popular waterproof binoculars brands with fog-proof functions include Vortex Optics, Bushnell Marine, and Steiner Nighthunter.
Waterproof Housing Materials
Waterproof binoculars are also made from high-quality materials that are water-resistant, shock-resistant, and durable. The common materials used for waterproof housing include polycarbonate, magnesium, and aluminum. Additionally, the housing comes with a special grip and thumb grooves that provide a comfortable and secure hold even when the user’s hands are wet. The housing also protects the binoculars from impacts, falls, and scratching, thus increasing their lifespan.
