( 1950 — 2000 )

Visual tube

Observation through the visual (telescope) tube - and in this it differs from the binoculars is one eye. But, in many cases, to telescope attached mount and tripod. However, to judge about what is more convenient to use binoculars or a pipe - does not make much sense: these devices are intended for use in different circumstances and for quite different objects.

Device optical telescope

The principle of the telescope is not increasing, and in the gathering light. The larger the size of the main light-harvesting element, a lens or mirror of a telescope, the more light it will get. It is important that the total amount collected by the telescope the light ultimately determines the level of detail visible - whether it is a remote landscape or the rings of Saturn.

Optical telescope

In August 1609, the Italian scientist Galileo Galilei dogodalsya optic lens tube, which have long been used by Dutch sailors to draw the lens up to the starry night sky. So came the first telescope. A telescope, - we give here the definition is an instrument designed for observation of distant celestial bodies - comets, stars, planets, moon, Sun.

Choose optical binoculars

Specifies the optical binoculars - zoom (magnification). Is the ratio of the size of the object enlarged by binoculars to his size, appears to the naked eye. The majority of binoculars, the average price of the group fall within the range of the average increase. This is enough for the tourist, hunter or sportsman.

Optical sight

Optical sight device, which is fixed on the arms for better aiming at the target. Distinguish between day and night optical sight, the first of which is intended for use in the daytime.

Optical device

Day optical devices have several important characteristics that should guide the choice of instrument for application in various conditions.
The magnification (zoom) shows how the use of the device "increases" or "closer" overlooked items. For example, if you use the model, "magnifying" the image 10 times, the object located a kilometer away from us will be visible as naked eye we see the object, remote from us at 100 meters.

Reflex sight

The reader who is familiar with our publications about optical sights, will not leave indifferent and a small essay on red dot sights.
Reflex sight, as evident from the name, is equipped with a special optical device is a collimator. Use in the construction of the scope of this device provides a high speed of sight: 2-3 times more than the simple optical sights.

Classification of night vision devices

Monoculars. I have one eyepiece, one electronic optical converter and one channel of amplification of light. Hence, in fact, the name "mono" means "one." The night monocular has, usually either a built-in IR illuminator or an attached removable one. The most common are budget monoculars on an electron-optical converter of the first generation. They can be used in conditions where the illumination is 0.05 lux (a quarter of the moon).

Characteristics of night vision devices

Starting a conversation about night vision devices, you need to eliminate one very common misconception first. In the pitch darkness, you can not even see the most expensive device. Because the principle of action of any night vision device is a multiple amplification of light that has fallen into the range open to the eye of the beholder.

Optical microscope

A microscope (from the Greek words "small" and "look") is an optical device designed to obtain enlarged images of an object in order to study this object. The microscope is used mainly in laboratories of scientists - physicians, biologists, etc. With the help of a microscope, designers determine the shape, dimensions and many other parameters for some microelements of a complex technical device.