Binoculars are an optical instrument used to magnify the image of distant objects, cause the effect of stereoscopy on the image, and can appreciate the distance between distant objects and, at the same time, follow them in motion.
The difference between a binocular and a telescope is that they have a wider field of view, but less magnification than the telescope.
Light penetrates through the lens and focuses the image seen in our eyes. The prisms allow the image to be seen correctly in our eyes, since it comes from more distant axes.
The binocular was first conceived in 1608, when Hans Lippershey joined two telescopic tubes to observe objects at great distances, seeking a clearer image with it.
But this origin is still questioned, since many claim that it was not an invention but an experiment. In the 17th century, the German priest Reitha attached 2 telescopes to what he called binoculars.
The creation of the first model itself, like the ones we use today, was developed by D’Orleans de Cherubin in Milan and by IMDobler in Berlin, during the first half of the 18th century.
They did not have a good acceptance by the public, which caused the inventors to abandon the project completely.
In 1854, Italian inventor Ignatio Porro integrated a prism into the box of the most advanced binocular designs. It became very popular because of this invention, and Porro’s prism ended up being named in a tribute after his death.
The main feature of the Porro prism is that it allows condensation of light from the light source to enlarge images seen from the exit pupil, becoming the basis for today’s functional binoculars.
The use of binoculars today
Today, binoculars are a popular item for athletes, nature lovers, explorers, and most importantly for the military , in addition to other uses ranging from recreation to birdwatching, including investigating UFO reports. .
This equipment is suitable for terrestrial, maritime and, in some cases, astronomical observation. Since the vision of both eyes is used simultaneously, when you look through a binocular you have a perception of the depth of the scene, that is, a three-dimensional view: you can notice the width, height and depth.
With the use of a binocular , an image can be projected simultaneously for both eyes, providing a more realistic depth perception.
The image quality of a binocular depends on five factors:
- Optical alignment
- Lens quality
- Quality of the prisms.
- Optical surface treatment.
- Mechanical stability of the body and focusing mechanism.
The brightness and sharpness you see through the binoculars are determined by several factors:
- Optical coating
- Lens diameter
- Prism type
The binoculars with zoom for example are easy to use when your goal is to closely investigate a particular topic. The zoom mechanism in this type of binoculars allows users of the device not only to zoom, but to choose between many levels of zoom.
The Prisms Porro are the cheapest and recommended for leisure. It is light and compact, much simpler and cheaper, suitable for those who want a binocular for leisure or hobby.
Good porro prism binoculars are for professionals, too. These models have quality vision in environments without excessive natural light.
Well, now that you know a bit more about the specifications of a binocular, you should select the best option according to its use.
At concerts and entertainment events, the field of view may be smaller and the binoculars should be light, so the lenses should be smaller, even though they have to deliver more light.
In sports , hunting , bird watching and outdoor activities during the day, it is important to have a wide field of vision and versatility when zooming in. Evaluates binoculars capable of magnifying the image up to 12 times, even if the lens is not that big.
Astronomical binoculars, on the other hand, are a reference for nighttime observations, with larger, heavier lenses, even used with tripods. In this case, the approximation does not need to be as large, but rather to have a ratio that ensures the proper exit pupil for a clear image display, even at night!
Keep in mind that the highest magnification factor is not always the one that best suits your needs.
At Desenfunda the best models on the market, we have a wide range of binoculars with the highest quality so you can enjoy your adventure.