It is of utmost importance that the tools used in leisure activities are capable to withstand the test of nature and its elements. It is important that these gears can outlast extreme environmental factors, from strong winds, to spatters of rain, to scorching heat, up to muddy forests. It is of greatest consideration that despite these circumstances, your tools will still be able to properly function. Unlike choosing the right outfit, which is very much straightforward, finding durable and suitable optical equipment takes a lot more planning. Telescopes and binoculars have delicate glass lenses that should be securely protected against water, grit, bumps, and humidity, among others.
To ensure consumers that they can get the product they deserve, they should always remember two words: fit and seal. It is of great importance that the manufacturers have elaborately assembled the component parts and joints, for proper fitting and efficient sealing respectively.
Proper fitting of the assembly parts is a critical part of binoculars creation. Its ability to outlast extreme environmental factors greatly depends on the quality of its fitting which starts from the very beginning of the equipment’s construction.
There is a permissible margin of physical variation by which mechanical parts could be created and still properly function, this is called “tolerance”. The usual tolerance requirement to ensure that equipment would perform efficiently during long-term use is approximately 1/10000 of an inch. To get the whole optical system to function, lenses and their holders should appropriately fit each other without them changing their positions even when exposed to harsh environmental elements.
Also, properly fitted parts are less prone to breaking, particularly parts that are required to frequently change positions, such as those found in the binoculars’ focusing mechanism. If parts are badly fitted, there is a greater tendency that the system will soon break down due to grinding of parts. Actually, the lack of properly fitted parts hinders the system to have the second essential element of environmental protection — an effective sealing.
Telescopes and binoculars are devised to give their users magnified view of images, that is why any image seen through their lenses is enlarged. This includes small particles like dust and dirt. And when these particles get their way inside the optical path of the device, they can distract the viewer as they may appear as big lumps of rocks. Not only that these objects can block the field of view, but also they can damage the mechanism when they get their way between the parts.
Seals do not only prevent undesirable materials from finding their way inside optical systems, they also prevent useful substances, gases in particular, from getting out of the equipment. During the 1940s, a team of engineers led by Marcus Leopold invented a nitrogen-filled optic, a first of its kind. This started the high standard of effective sealing in optical instruments, and the process of hydrogen and oxygen removal from optical devices’ internal space and replacing them with nitrogen. This prevented moisture from forming inside the optic device when there is a drastic change in temperature. It is easier to wipe off the moisture forming on the outer surface. Fogging reduces the efficiency of binoculars. When fog forms, it leaves water spots that obscure the field of view, resulting in blurry images.
There are other additional things users can do to enhance the resistance of binoculars and telescopes. Keeping the instrument within proper length would reduce possibility of contact with unwanted surfaces. A long, thin object is more likely to break than a short, stubby one. External armors such as layers of durable and strong material like rubber also help in protecting binoculars against physical damage.
As regards the lenses, manufacturers continue to dedicate time and research for developing new coatings. Many coatings were not released to the market due to their effect in distorting images through addition of undesirable colors and reduction of light transmission. But the objective lenses are not sufficient to keep lenses from accumulating moisture and dust. Here is where lens covers come in.
Telescopes and binoculars meant for extreme conditions come with lens covers. A reliable lens cover remains securely in place even if the instrument is being carried. But simple disks that loosely fit and easily fall don’t count. They do not provide users with the security needed when they easily fall off.
So where to find instruments that satisfy these requirements? Manufacturers of binoculars and telescopes offer lots of choices suited for various situations. Be it for climbing the Himalayas or for birdwatching in Peru, you will see people carrying Leica, Nikon, Swarovski, Zeiss, or Leupold binoculars. But when we talk about state-of-the-art design with superior features meant to protect the composition of the optical device, Steiner is the brand widely trusted and respected by the experts. With Steiner, users are provided with high-quality standards and excellent optical performance that can outlast harsh environmental conditions.
It is not necessary to have military specification binoculars, but if you have that extra cash, you will not regret spoiling yourself with these high-end binoculars. Always consider these features of binoculars against environmental elements as they might come in handy once you find yourself contemplating purchasing binoculars.
