Why does "Bindon aiming concept" need brightly lit reticle?

[Big Chudungus]

Why wouldn't it work with old skool black cross-hairs? (and its not working for me with old skool cross-hair scope). Are some people unable to do this trick? I can NEVER see those hidden imagine 3D poster things.


"the user does not actually look through the sight but instead keeps the collimated (infinity) image of the illuminated part of the reticle in focus with the dominant eye "

I'm confused. "not actually look through the sight"???
I think he IS "looking through the site" but focus is on cross hairs not target image.

Is cross-hairs what he is calling "collimated (infinity) image of the illuminated part of the reticle"? "infinity"? does that just mean Cross Hairs because target picture will have a distance number associated with it?

Bindon aiming concept
Several ACOG models are designed to be used with the "Bindon Aiming Concept", an aiming technique developed by Trijicon founder and optical designer Glyn Bindon. The technique is essentially using the illuminated part of the reticle and its focusing rear eyepiece as a collimator sight.[14] As in any other collimator sight, the user does not actually look through the sight but instead keeps the collimated (infinity) image of the illuminated part of the reticle in focus with the dominant eye while the other eye views the entire field of view to acquire the target. In this both-eyes-open technique the brain superimposes the aiming reticle on the target. An added part of the technique is to shift focus after acquisition to the dominant eye/telescopic image for more accurate shooting. This overcomes the problem of centering or acquiring fast traversing targets common with all telescopic sights. Only certain models of the ACOG are designed with bright enough daylight-lit fiber optic or battery-powered LED reticles that facilitate this technique.

[Zenderfall]

Too me a sec but I understand what this is, even though I never actually knew what it was called. Back in the early 1990?s, I remember a particular sight that was very strange. It had a red dot in the middle, but the entire area around the dot was covered, as in, you can?t actually look through it. The rifle?s owner told me to keep both eyes open, and look at the target, the dot magically superimposes over the target because the brain?s tendency to put two images together. The aight was called an Armson Pro-Dot BTW. Quite an oddity it was. Never made it mainstream, either, the company or the concept.

The trick was, put it close to your eye, keep both eyes open, and focus on the target-the dot will show up. I guess there?s a name for the technique but I never knew what it was called.

I think the reason why it works with bright dots and not black crosshairs is because there?s not enough contrast. A bright dot stands out a lot more so the brain picks it up better.

[Mute]

It works similar to those early Armson OEG sights in that you're superimposing the dot over the target even though you couldn't look "through" anything with the Armsons. With both eyes open, the dominant and non-dominant eyes work out the sight picture for you, but if you focus on looking through the optic, the eye that is lined up (usually the dominant eye) will sort of take over what you see. But for it to work when not looking through the optic, an unlit reticle would be too hard to pick up unless that is a noticeable contrast with the world you're seeing.

[Big Chudungus]

interesting.

I'm thinking I should be able to get SOME Bindon effect with plain black cross-hairs. Maybe need practice in different lighting.

I'm right handed but left eye dominate.

Any cheap Chinese knock-off ACOG that can do the Eyes Wide Shut trick?

[Sputnik]

It’s a little like a red dot when you’re searching for your target but once you focus on it your brain switches to the magnified view. It takes getting used to doing it but it works. I think you need that bright aiming point to give your eye and brain a focus point. A low contrast crosshairs just doesn’t register and get seen.

[sigstroker]

It works similar to those early Armson OEG sights in that you're superimposing the dot over the target even though you couldn't look "through" anything with the Armsons. With both eyes open, the dominant and non-dominant eyes work out the sight picture for you, but if you focus on looking through the optic, the eye that is lined up (usually the dominant eye) will sort of take over what you see. But for it to work when not looking through the optic, an unlit reticle would be too hard to pick up unless that is a noticeable contrast with the world you're seeing.

OEG stands for Occluded Eye Gunsight.

It doesn't work on me. I can't see crap unless I close my left eye. I suspect it's because the vision is very different between both eyes. One eye is terrible and the other is even worse.

[Mute]

OEG stands for Occluded Eye Gunsight.

It doesn't work on me. I can't see crap unless I close my left eye. I suspect it's because the vision is very different between both eyes. One eye is terrible and the other is even worse.

Yeah, the old OEG sights didn't work for everyone.

[SVT-40]

A few pic's of my Armson "OEG".. This was top of the line rifle CQB stuff in the 80's.. The sight worked pretty well for me. I found that blinking occasionally would allow the dot to stay visible.