vstk57
09:40:32 Mon
Aug 28 2006 | |
Re: Optics! Holographic Inquiries. |
I noticed that a bit as well,and it even holds true with the Eotech and Bushnell series at 10 times the price.
Remember these sights have absolutely no optical correction or adjustment as do most typical scopes.You are required to use the other weaker eye to focus on the target image outside of the scope. Between the 2 images, both your eyes can have a little difficulty focusing on both something almost infinite and something bright within a few or more inches from your eye.
I don't think any of the more expensive reflex sights will allow the user to change the optical characteristics of the hologram projection lenses, and how they are focused on the viewing screen.
What I tend to do is just use either the small round dot or the central dot in the larger ring. The other reticles tend to more easily blur straight lines rather than they so round ones
NOW, if your eyes are almost perfect and you have no vision problems, what could be happening is a side effect of the technology and operation of the scope's optics.
The gold-like coating on the main acquisition screen is a dielectric(meaning "layered") mirror,much like the ones used in some lasers. It is not just one single totally reflective coating on the surface,or you wouldn't be able to see through it at all.
Instead,it is comprised of many multiple layers of semi-reflective coatings,each partially coated like a 2-way mirror, and good for 20 percent reflectance(the hologram to the eye)and 80 percent transmission( the target to the eye). This ratio varies with the number of total coatings and purpose,but there can be 50 or more micro-meter coatings like this on every mirror.
The spacing between each layer/coating is a critical distance; that spacing being a single wavelength in distance of the particular frequency that was used to created the holograms) This ensures that the Hologram(and its specific frequency) will be reflected from the screen and back to the shooter while the target image comprised of all other colours will pass through. If you want to try an interesting experiment,look at something red through the mirror. Anything read will go black because the mirror is reflecting red and not letting it pass to your eyes.
What I suspect is that you are getting a second weaker reflection coming off one of the lower level coatings on/under the mirror/screen's surface,and because it may be only a wavelength or half-wavelength,depending on its manufacturer, you probably are getting 2 reflections off the same multi-coated mirror. The Reticle reflection off the top surface and a second one 670 nanometers below the surface off the second coating, which would appear weaker as its under more coatings and might have a lower reflectance/transmission ratio...
What you might try is turning the image brightness as low as you can use and leave it at that.
That will help your eyes focus with less eye-strain and make you a better shooter ; )
Compared with all that's on the market for 'Pro-Sumer' sights and scopes, I haven't seen another
type of sight so well suited to the Drozd..
Vstk 57
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