Scopes & Optics
Scopes

Scopes & Optics

Scopes or Telescopic sight is an optical sighting device that is designed to enhance the view of a target at range. The are many useful optic devices available today with a variety of uses.

Table of Contents

Scopes or Telescopic sight is an optical sighting device that is based on the refraction of light. Ideal for long-range shooting. The magnification of the optics make it easy to pick and line up your target. The reticle gives you accurate aiming points in any lighting condition, making this device one of the most popular sights on rifles today!

Most common today is the ability to combine the optics with electronics to enable the scope to be useful in low light and night conditions.

Scope Components

Scope Components

History of the Scope

1608

Refracting Telescope

Refracting ScopeThe first known practical refracting telescope was invented in the Netherlands in 1608, and it was used for both terrestrial and astronomical observations.

1608

Late 1630's

A spiders web

Spider WebWhile experimenting with lenses, William Gascoigne, an English amateur astronomer, discovered that a spider’s web spun at a precise point between two lenses in his telescope allowed him to align the instrument with greater precision. 

Late 1630's

1729

Achromatic Lens

Achromatic lens 1729While studying the human eye, Chester Moore Hall, an English mathematician, discovered that an achromatic lens was a possibility. He found that by combining flint glass and crown glass he constructed the first achromatic lens. 

1729

1776

A Telescope Mounted on a Firearm

Telescope on a firearmExperiments by a number of people were conducted on how to mount a telescope to a rifle.

1776

1835-1840

The first documented telescopic sight

Morgan_James_ScopeAmerican gunsmith Morgan James with direction from John R. Chapman produced the Chapman-James telescopic sight. The sturdy construction of these sights meant the sighting remained true even after a number of shots. It is therefore widely regarded as the first practical telescopic sight.

1835-1840

1855

Achromatic Lenses

Achromatic LensesWilliam Malcolm, an American optician produced his own sight using Achromatic lenses and improved elevation and windage adjustments.

1855

1880

Refracting Telescopics

Refracting Lens

An Austrian, August Fiedler produced one of the early versions of refracting telescopic sights that was actually practical to use.

1880

Classification of Scopes

Scopes are classified as:

“Power or Optical Magnification”   X    “Objective Lens Diameter”

For example a scope described as:

6×40” = a magnification of 6× and an Objective Lens of 40mm.

6-10×50” = a variable magnification of 6× to 10× and an Objective Lens of 50mm.

Binoculars, also known as field glasses or binocular telescopes, are instruments used to magnify distant objects by using two telescopes mounted side-by-side and aligned to point in the same direction. They allow the viewer to see objects that are far away as if they were closer, making them a useful tool for a variety of activities such as birdwatching, hunting, boating, and watching sporting events.

More on Binoculars here:

Night vision lets people to see in low light conditions, or even complete darkness by using special equipment to amplify ambient light. It can be moonlight, starlight or even the glow of a firefly and convert it into an image that is visible to the naked eye. There are many types of night vision equipment for goggles, binoculars, cameras and scopes.

More on Night Vision here:

Thermal vision lets people to see in no light conditions, complete darkness by using special equipment to amplify ambient light. It can be used through fog, smoke dust or scrub. There are many classes of thermal vision equipment for goggles, binoculars, cameras and scopes.

More on Thermal Vision here:

Yet another class of optic is the red dot sight. A sight that displays an illuminated aiming point (reticle) for the operator that is superimposed on the field view. This places the target and the reticle virtually on the same optical plane, facilitating fast acquisition.

More on Red Dot Sights here:

Photo Credits:  Kyler Boone | Unsplash

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