True 100% parallax free sight/scope??

[zollen]

Is it possible to have a true 100% parallax free sight/scope (regardless of distance)??



1. Mirror#1 to take what the a gunner would see through a view finder
2. Mirror#2 to reflect the image of Mirror#1 back to a gunner eyes
3. Superimposed a red dot on Mirror #2 before reflecting the image back the gunner eyes.

Do you think the above approach would solve the parallax problem regardless of distance?

 

[steven58]

I don't know about your particular solution but Standard 1 X red dot sights, such as Aimpoints are parallax free at any distance.

As far as magnified optics they all exhibit some parallax error. This is usually dealt with by either

A) using an adjustable objective and "dialing away" the parallax for the known range you are shooting. or

B) using a scope at or beyond the fixed parallax setting and staying below 10 X magnification. There will still be a parallax but it will be so slight as to not really matter.

 

[dmazur]

Holographic red dots (like the Eotech) are parallax-free.

The way to tell is to look through the sight and align the red dot with the target. Move your head slightly. The red dot appears to move in the field of view, but it actually doesn't change position on the target.

Here's a description of the history of the development of the Eotech from the HUD's used in fighters -

http://www.eotech-inc.com/page.php?id=11

Other red dot sights (like Aimpoint) are reflex sights, and are essentially what you described with mirrored lenses. My understanding is that they are almost parallax-free if they are not magnified.

http://en.wikipedia.org/wiki/Reflex_sight