1974 Aimpoint invited the red dot sighting technology


1. What is a red dot sight ?

A red dot sight allows a shooter to do what comes naturally — keep both eyes open while focusing on a target. When a shooter looks into an Aimpoint sight, a red dot appears in the lens. The shooter can then quickly superimpose the red dot on the target. When the red dot is on the target, you’re on target. It is this combination of speed of sighting and accuracy that makes Aimpoint sights Superior to all other types of sights.

Aimpoint red dot sights are made without magnification or optical distortion. They use an LED (light emitting diode) which is totally harmless to the eyes.



2. What a red dot sight is not !

A red dot sight is not

  • A magnifying scope with an illuminated reticle. With an illuminated reticle, the dot must be centered in the sight and you have an eye relief to worry about. With a red dot sight from Aimpoint, you don't have to center the dot and there is no eye relief.

  • A laser sight. A laser is visible on the target. Only the shooter sees the red dot.

  • A holographic sight. Holographic sight technology requires much more electricity which implies a fraction of battery life in comparison, and the laser may be dangerous to the eyes if the lens breaks.



3. Aimpoint extremely low power consumption: ACET technology

An electronic sight requires power to work. How long the red dot can remain lit depends on two things:

  • Power consumption of the light source
  • Battery capacity


Batteries: Aimpoint sights use 3V Lithium batteries, chosen for their superior temperature and storage capabilities.

Aimpoint chooses batteries based on availability and storage and temperature characteristics. To achieve the longest possible operating times, Aimpoint has focused on developing a completely new technology called Advanced Circuit Efficiency Technology (ACET), which has extremely low power consumption compared to other light sources.

Power consumption: Depending on the battery used in our different products, ACET sights can last nearly 50,000 hours (on setting 7 out of 10) on a single DL1/3N battery and nearly 80,000 hours (on setting 11 of 16) on a single AA battery.




4. The size of the dot

The Aimpoint sights are available in two different dot sizes: 2 or 4 MOA (minute of angle) – depending on the models.

In term of speed and accuracy, extensive trials have shown that the 4 MOA is the optimal dot size for most users in a close shooting situation.

Tests performed by the military have repeatedly proven that a single red dot is the reticle with which marksmen fire a well-aimed shot the fastest.

  • 1 MOA ? 30 mm at 100 m (1” at 100 yards)
  • 2 MOA ? 60 mm at 100 m (2" at 100 yards)
  • 4 MOA ? 120 mm at 100 m (4" at 100 yards)


In practice, this means that the 4 MOA dot covers the target with:

  • 30 mm at 25 m (1" at 25 yards)
  • 60 mm at 50 m (2" at 50 yards)
  • 120 mm at 100 m (4" at 100 yards)


In practice, this means that the 2 MOA dot covers the target with:

  • 15 mm at 25 m (0,60" at 25 yards)
  • 30 mm at 50 m (1" at 50 yards)
  • 60 mm at 100 m (2" at 100 yards)


5. The difference between Aimpoint red dot sight and its competitors and how it works.


Illustration 1
This is how the Aimpoint principle works: the red light from the LED is reflected back to your eye from the front lens (double lens). All other light passes through unobstructed.

Illustration 2
The difference between Aimpoint’s solution…
Regardless of where you position your eye, the reflection of the LED is always parallel with the sight’s optical axis, thanks to the design of the double lens and its light refraction property. The points of aim and impact always coincide.


Illustration 3
…and other sights.
The conventional lens used in the majority of red dot sights gives an angled reflection when the dot is not centered on the lens. The farther the dot from the center of the lens, the greater the deviation from the optical axis. In this case, the point of aim and the point of impact can never be the same.