by JN Distéfano · 1966 · Cited by 11 — , Ancora sulla stabilità asintotica delle deflezioni di una trave viscoelastica, Atti Accad. Naz. Lincei Rend. Cl. Sci. Fis. Mat. Nat. (8) 35 (1963), 504 ...

There are technically two lens elements on this sight.  The first, which is closest to the eye when mounted, appears to be a single piece of polycarbonate, polished in a convex shape to magnify the second element, which is the neon green "light pipe" on the front of the sight.

The Ultimate Open SightThe Micro See All Open Sight manufactured by Oversight Shooting Technologies is the first of its kind in true open sight shooting technology. By incorporating a patented optic, designed to maximize pin point accuracy, the Micro See All Open Sight combined with an Edge Glow lit reticle gives shooters multiple advantages over traditional open sights. And we’re proud to say that the Micro See All Open Sight is 100% made in the U.S.A.

Does the Micro See All Open Sight work at night?  Yes.  You'll easily lose sight of your target long before the sight fails to meet expectations.

Perfectly SharpThe Micro See All Open Sight is the first of its kind in open-sight shooting technology. It’s the only open sight that allows the shooter to see both the target and the sight element in perfect focus, simultaneously -- a clear upgrade from iron sights. It’s the perfect sight for any application where magnification isn’t needed: short-range rifles, shotguns, black-powder guns, and even pistols. And the incorporation of edge-glow material means low-light situations are no obstacle.

We tried the Micro See All Open Sight about 30 minutes after sunset, while there was still a slight glow of light in the sky.  The fiber optic componenet of the sight was the brightest thing in our field of vision, and the reticle was clearly visible.  At 45 minutes after sunset, we could still make out enough of the reticle and the fiber optic's slight glow to target objects up to 30-40 yards.  So...

The Micro See All Open Sight is Made in the USA and protected by the Micro See All Open Sight Limited Lifetime Warranty.

MicroBrite ® Color and White LED Lights provide exceptional brilliance, lighting uniformity and amazing colors. For new pool and spa designs, their compact size ...

Every once in a while, a product comes along that really impresses us.  This is one of those times.  The Micro See All Open Sight does what it does without trying to do too much, and it does it well - at a price that everybody can agree with.  This is another one of those diamonds in the rough that we will stand behind 100%.

Here's how it works.  The neon green fiber optic pipe has a thin crosshair reticle under a horizontal line printed on the side that faces the lens.  The lens then magnifies that image so it appears much larger to your shooting eye.  Keep both eyes open, put the top point of the vertical post on the target (make sure you can't see the horizontal line), and pull the trigger.  Could not be any more simple than that.

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The Micro See All Open Sight is a pretty cool concept.  Unlike most open sight systems utilized on rifles (or scopes, for that matter), this sight does not have an exit pupil or eye relief requirement.  This means that target acquisition is fast, easy, and simple.  The concept is not a new one.  In fact, if you've ever used a red dot or reflex sight, you will feel right at home using the Micro See All Open Sight.  Simply bring your rifle or pistol into firing position, and as soon as you see the reticle, aim and fire.  Regardless of eye relief or where the reticle appears in the sight picture, that is where your projectile is going to impact.  There's a reason why armed forces and discriminating brush hunters use sights like this - they do exactly what they are supposed to do, every time, faster than a scope or iron sights.

A vision system consisting of several cameras, lenses, illuminations and a control unit is installed. After the door has been positioned in a negative shape, ...

Feb 10, 2009 — Top image: brightfield illumination using microscope's built-in substage tungsten lamp. Bottom: Darkfield illumination; simply placed a black ...

The Micro See All Open Sight is constructed with what looks like only five pieces, excluding mounting and adjustment screws.  The body itself is a single piece of black anodized aluminum with an integrated Picatinny/Weaver slot.  Slide the sight on to the rail of your rifle/pistol/airgun, tighten the two mounting screws at your desired position on the rail, and you're mounted.  Surprisingly few parts, which is a good thing - less parts means less possibility of malfunction in the crucial moment. If you're one of those guys who is concerned with your battle rifle's weight, we have some good news.  The total weight of the Micro See All Open Sight on our scale was less than 1.8 ounces.  And at 2" x 1" x 1" (57 x 25 x 25mm), the sight takes up only two inches of Picatinny rail space.  If space is at a premium, you could hypothetically mount this sight using only three Picatinny rail slots (on a riser or at the front/rear of your rail).  We can see how this would be a valuable addition to a rifle setup with a primary scope and quick-detach rings.

Perfectly SimpleThis sight requires no batteries. In addition, it’s actually easier for many people to use than other sights. Simply look through the sight and your eye does the rest – there’s no front sight to worry about and no fuzzy sight element to interpolate. Just place the crosshair reticle on the target and shoot. And unlike scopes, red dots, or other optical sights, the open design of the See All sight means target acquisition is reflex-quick. Your target never leaves your field of view.

High spatial coherence of laser light arises from the existence of resonator modes, which define spatially correlated field patterns. ... The coherence length is ...

Low-Light CapabilityThe single plane of focus combined with an edge glow reticle, means that if you’re hunting in low light, you’ll no longer lose your sight picture when you focus on the target. Available light fills the fiber optic element with a fluorescent green that makes the crosshairs visible, but does not wash out the target.

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No electronics means no possibility of water damage.  Drop the sight in a bucket of water for a week, take it out, mount it wet, and shoot it.  There's nothing to break.  This is the perfect backup sight for your scary black rifle.

ToughnessWith a See-All Open Sight, you’ll never have to worry about dead batteries, fog, rain or even an accidental dip in the river. The open, single-element, solid-state design means that if you can see the target, you’ll also be able to see it in your sight picture. And don’t worry about knocking this sight out of alignment. It’s built to be bumped, knocked around and dropped without affecting function or accuracy. This sight will take more abuse than any rifle you’ve got.

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You don't actually have to focus on the reticle, either.  Due to the way the Micro See All Open Sight is constructed, the reticle stays in focus while your eye naturally stays on the target and keeps that in focus instead.  This is what leads to the ultra-fast target acquisition.

2024420 — A brightfield microscope creates an image by directing light from the illuminator at the specimen; this light is differentially transmitted, ...

Parallax-Free DesignThe unique, single-element design means precise eye position is no longer necessary. Even if your eye is off-center with the sight or even the gun’s barrel, the bullet will strike where the crosshair is centered. Just pick up your target, and the sight will do the rest. This is one reason that the See-All Open Sight is a favorite with young people and new shooters of any age. The learning curve is almost non-existent.