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February 11th, 2015
Editor’s comment: The new lens technology described here is a big deal. The “flexible” polymer lens is nothing short of revolutionary — there’s never been anything like it on a riflescope (though our own human eyes have flexible lenses). In the world of optics, this is as noteworthy a development as the touch-screen was for personal computing. Flexible, “adaptive” lenses can potentially be employed for a wide variety of products, from cameras to spotting scopes. Think about the benefits of “instantaneous zoom” for security cameras.
Sandia’s RAZAR Scope Features Flexible Lenses That Can Change Focal Length Instantly
Sandia National Laboratories has developed a truly game-changing piece of optical technology at the direct request of the Department of Defense: the RAZAR (Rapid Adaptive Zoom for Assault Rifles). Fundamentally different than every other riflescope ever made, the RAZAR represents a revolution in lens design and function. Until now, all riflescopes used a set of rigid, hard lenses (usually glass). The new RAZAR utilizes an advanced set of flexible polymer lenses that allow the user to toggle between high and low magnification with the press of a button. The RAZAR can literally zoom in and out in the blink of an eye (250 milliseconds).
The RAZAR works in conjunction with a tactical-style optic, such the Leupold HAMR (top photo). This tandem (two-part) sighting system combines the conventional scope’s eyepiece and illuminated reticle with the RAZAR’s ultra-fast zooming capability. Unlike traditional eyepiece (ocular) magnifiers, the RAZAR sits in front of the primary optic.
See RAZAR Demonstrated in Sandia Labs Video
Game-Changing Technology
The RAZAR’s instant, push-button zoom capability gives soldiers the ability to change field of view and magnification without re-positioning their grip on the rifle, unlike traditional variable-power riflescopes. This capability can be invaluable to a soldier in combat.
Michael Squire, a former SFC with Special Operations Research Support Element, said the ability to zoom between near and far targets within seconds, without taking his hand off the weapon, is “game-changing.” Squire added: “The difference that can make, especially with somebody shooting back, could mean life or death…”
The secret to the RAZAR’s high performance lies within the development of the advanced technologies within the scope. A hermetically sealed, flexible polymer lens core encapsulates a proprietary polymer liquid, and this core then works in tandem with glass lenses to form the basis of the optical design.
Rapid changes in magnification are accomplished via a piezoelectric motor that changes the curvature of the lenses, achieving the correct positioning within 250 milliseconds within an accuracy level of 100 nanometers. When zooming, these electronically-controlled actuators act much like the tiny muscles that allow the human eye to change focus from near to far. Human eyes have flexible lenses controlled with muscles*. The RAZAR has flexible lenses controlled by tiny electric motors.
It’s important to highlight the reliability that Sandia was able to build into the RAZAR. The system requires very little mechanical power to operate, and can undergo up to 10,000 zoom actuations on a single set of two standard AA batteries. The ultrasonic motor draws no power unless it’s being used to bend the soft lenses, which makes the RAZAR very reliable. If the batteries do go flat, the RAZAR remains fully usable — the system simply stays at the last magnification level until the batteries are replaced.
Sandia’s RAZAR design provides a large, clear viewing aperture, without sacrificing any of the optical quality found in traditional riflescopes. The RAZAR is also shock-proof, vibration-proof and capable of operating in a very wide temperature range.
The Future of “Instant Zoom” Adaptive Lenses
Sandia Labs is developing other specialty lenses in the near-infrared, short wave-infrared and mid-wave infrared spectrum, primarily for DOD use. However, Sandia has suggested that its flexible polymer-lens technology could be adapted for other imaging applications where rapid zoom is needed, such as binoculars, spotting scopes, and even security cameras. For more information, visit the Sandia Labs website.
*Changing the curvature of the human eye lens is carried out by the ciliary muscles surrounding the lens. They narrow the diameter of the ciliary body, relax the fibers of the suspensory ligament, and allow the lens to relax into a more convex shape. A more convex lens focuses divergent light rays onto the retina allowing for closer objects to be brought into focus.
About the Author
Kip Staton is a freelance gun writer based in North Texas, and loves to blog about news within the firearms industry and his perceptions on marksmanship. Kip is a content marketer, copywriter and digital strategist for an award-winning Dallas marketing agency. To read more by Kip, visit KipStaton.com.
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December 14th, 2014
 With the price of some premium scopes approaching $3000.00 (and beyond), it’s more important than ever to provide extra protection for your expensive optics. ScopeCoat produces covers that shield scopes with a layer of neoprene rubber (wetsuit material) sandwiched between nylon. In addition to its basic covers, sold in a variety of sizes and colors, ScopeCoat has a line of heavy-duty 6mm products that provide added security.
Triple-Thickness XP-6 Model for Added Protection
The XP-6 Flak Jacket™ is specifically designed for extra protection and special applications. The 6mm-thick layer of neoprene is three times thicker than the standard ScopeCoat. XP-6 Flak Jackets are designed for tall turrets, with sizes that accommodate either two or three adjustment knobs (for both side-focus and front-focus parallax models). To shield an expensive NightForce, March, or Schmidt & Bender scope, this a good choice. XP-6 covers come in black color only, and are available for both rifle-scopes and spotting scopes.
 The heavily padded XP-6 Flak Jacket is also offered in a Zippered version, shown at right. This is designed for removable optics that need protection when in storage. The full-length, zippered closure goes on quick-and-easy and provides more complete protection against dust, shock, and moisture. MSRP is $30.00.
Special Covers for Binos and Red-Dots
ScopeCoat offers many specialized products, including oversize covers for spotting scopes, protective “Bino-Bibs” for binoculars, rangefinder covers, even sleeves for small pistol scopes and red-dot optics. There are also custom-designed covers for the popular Eotech and Trijicon tactical optics. Watch the Shooting USA video below to see some of ScopeCoat’s latest specialty covers.
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September 23rd, 2013
 What is the most-used piece of equipment on this editor’s reloading bench? No it’s not my Rock-Chucker press, or even my calipers. The one item in near-constant use is a small, folding magnifying glass. Mine folds into a square case and offers 4X viewing with an 8X bifocal insert. With this handy tool I can inspect case mouths for burrs, check primer pockets, inspect meplats, and look for flaws on bullet jackets. I also use the magnifier to see rifling marks on bullets seated into the rifling, or check my bolt for galling. The number of uses is nearly endless. I keep one magnifier at my reloading bench and another in my range kit.
Folding magnifiers are so handy yet inexpensive that you should own a couple spares (including one in the range box). I bought my magnifier in a book-store, but you can also find them on the web at FoldingMagnifier.com and WidgetSupply.com starting at just $1.95. To see the finest details, Widget Supply offers a powerful 17X/50X slide-out magnifier with a built-in, battery-powered LED light. With that gadget, you can easily see any minute flaws in your barrel crowns. That’s important because crown damage can cause hard-to-diagnose accuracy issues. We’ve known guys who spend weeks tinkering with loads, when the real problem was a worn-out or damaged crown.
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July 3rd, 2012
Those of us over-40 types can use some help when shooting iron sights. As one gets older, your eyes lose the ability to rapidly adjust to different points of focus. In practice, when shooting a rifle, this means the target image may be sharp but the sights are blurry, or vice-versa. Or you may be able to see the target and front sight reasonably well, but the rear sight is a complete blurr. (That is this Editor’s problem when shooting a rifle, such as a Swedish Mauser, with a notched blade rear sight.) Even if you are using a rear peep sight, you may see a blurry rear circle (or two circles if you have astigmatism). Placing a diopter on your shooting glasses can help many people see open sights better, when shooting both handguns and rifles.
 Merit Corp. in Schenectady, NY, offers an adjustable metal diopter that attaches to shooting glasses with a rubber cup. Though primarily intended for pistol shooters, the Merit diopter can also be helpful when shooting rifles with open sights, such as military bolt actions. Priced at $65.00, the Merit device features a shutter-style adjustable aperture iris.
 Merit explains: “The human eye, whether or not prescription glasses are required, cannot focus on both sights and the target at the same time. The eye will constantly shift focus from the sights to the target trying to ensure proper alignment. Unfortunately, as we age, the eye loses the flexibility which allows it to do this; thus, sights and target begin to grow fuzzy. There is a simple way to combat this by increasing your eyes’ depth of field (range of focus). If you look through an aperture or pinhole of the correct size, you will be able to see both sights clearly, and the target will be clearly defined as well.”
In addition to diopters for eyeglasses, Merit produces a variety of adjustable iris sight products for rifles, including the Variable Iris Aperature for AR15s. Visit MeritCorporation.com or call (518) 346-1420.
Cheaper Diopter from Lyman
If you can’t afford a Merit adjustable diopter, Lyman offers a similar all-plastic device for under $20.00. The Lyman Hawkeye Shooting Aid mounts directly to your eyeglass lens with a rubber suction cup. The diopter section is made of plastic, and aperture diameter is non-adjustable.
Though it is simple and inexpensive, the Lyman Hawkeye works for many shooters, if positioned properly. (Don’t think this is anything close to the Merit Diopter in quality though!) Currently, Cabelas.com has the Lyman Hawkeye on sale for just $12.88, item # IK-229094. MidwayUSA sells the Lyman Hawkeye for $18.99, item # 936878. One MidwayUSA customer reports:
“This thing really works! I have it on my shooting glasses, and it has made a significant improvement in my ability to keep the front sight and target in focus at the same time. If you are older and find that you are having a hard time keeping the target in focus over ‘iron sights’, then this may be the answer to your problem. Mine works equally well for both pistol and rifle, although I do have to change the device’s position on my shooting glasses when changing weapon types.”
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November 30th, 2011
Nikon has raised the bar in Spotting Scope technology. It has introduced the first-ever spotters with built-in Vibration Reduction. This may be a significant breakthrough. Image stabilization has revolutionized hand-held photography, and it could definitely improve the practical functioning of spotting scopes. If you have ever used a big, heavy spotting scope, you know that it is easy to induce vibration and shaking — merely with a heavy hand on the focus knob. And when the wind blows, a big scope acts like a sail, so it can wobble and vibrate in gusts. Just a small amount of shake or vibration can make it difficult to see your target, slowing down your target acquisition time considerably.
Nikon’s new 85mm EDG Fieldscopes are the first spotting scopes on the planet with lens-adjusting image stabilization. The EDGs employ a lens-shift type VR (Vibration Reduction) system that counters vibration and shaking. According to Nikon, the EDG VR system greatly reduces external vibrations caused by wind and the operational vibrations occurring during focusing, panning and tilting. Nikon claims its VR system reduces vibration to 1/8th the level of a conventional spotting scope.
HOW IT WORKS — This system uses two independent Angular Velocity sensors to detect pitching (vertical movement) and yawing (horizontal movement). Both sensors then detect diagonal movements. Upon the detection of movement, the sensors provide instructions to the two Voice Coil Motors (VCM) that command and control the Vibration Reduction-optical system to eliminate the shake or blurring. These sensors can detect movement every 1/1000 second. The system can effectively reduce vibrations by roughly 88% (compared to a conventional spotting scope), providing the equivalent of a shutter speed approximately two stops faster.
So how much does this new VR technology cost? Hold on to your hat — MSRP for the 85mm EDG VRs (either body style) is a shocking $5,499.95! At least that includes eyepiece and protective case. We can only hope that, as this technology matures, it will be implemented at much lower cost. Consider that $200.00 point-and-shoot cameras now offer image stabilization. Given time, we can expect the vibration reduction systems to go down in price, and to become commonplace in premium spotting scopes.
Available in a straight or angled body, the all-new EDG VR Fieldscopes come standard with a 20-60x Zoom Eyepiece, ED (Low-Dispersion) glass, and multi-coated lenses. The 85mm EDGs feature a five-meter close focus distance and waterproof, fogproof construction. Weighing in at just over 84 ounces (w/o batteries), the straight-body EDG is 14.9″ long, while the angled version is 15.7″ long. Nikon’s VR system takes four AA batteries which provide roughly 17 hours of battery life with alkaline batteries and up to 32 hours with lithium. While the VR function can be manually activated, an auto power-off function helps conserve battery life. Seven optional EDG eyepieces are available. Three tripod mount screw holes permit flexible mounting.
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June 6th, 2010
The new Zeiss Victory DiaScope 85 T* FL Spotting Scope has earned two prestigious awards. First the new 85mm DiaScope won the coveted Red Dot Design Award. “All products honored with the red dot design award had to impress an international jury. These products [must] demonstrate their quality in one of the toughest design competitions in the world,” says Professor Dr. Peter Zec, speaking on behalf of Design Zentrum Nordrhein Westfalen which issues the Red Dot Design Awards.
 Outdoor Life Magazine. Outdoor Life’s editors praised its “optically superior [flourite] glass in a surprisingly lightweight chassis”. The ZEISS DiaScope won the low-light test, had a top resolution score and “the two-speed focus and wide-angle eyepiece sparkled”, according to the test team.
We checked out the new 85mm DiaScope at SHOT Show and reviewed its new features with Zeiss project engineer Stephan Albrecht. Make no mistake about it. This is an outstanding spotting scope. We loved the dual-rate focus system. You can do the gross focus really fast, but still achieve the ultra-precise focus needed to resolve bullet holes at long ranges. We were very impressed with the new higher-magnification 20-75X zoom eyepiece. This is one of the best variable-power eyepieces ever made, and long-range shooters can definitely use the extra magnification (75x vs. 60x). Overall the Zeiss system is surprisingly compact, yet it offers excellent low-light performance, plus higher magnification than most other spotting scopes in the 80mm category.
The new 85mm Diascope is available in straight or angled bodies both boasting a rubber-armored exterior for protection. Eyepieces are available as variable 20-60x, 20-75x, or fixed 40x. A 65mm version of the new Diascope is also available, but we feel that, if you’re going to spend this kind of money ($3000.00 for 85mm with 20-60X eyepiece), you should go with the 85mm. The 20-75X eyepiece only delivers 15-56X when used with the smaller 65mm Diascope.
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June 16th, 2009
The majority of competitive shooters in many disciplines are over 40, with a high percentage over 50 years old. That’s a lot of old eyes which may have trouble reading small print. Shooters who are far-sighted, and older shooters with presbyopia, may have difficulty focusing on close objects. At the range, this may make it difficult to read range cards, printed come-up tables, or even the “fine print” found in manuals for chronographs and other shooting accessories.
Here’s a solution for shooters who need better close-up vision. For just $10.50 per pair, Amazon.com sells stick-on inserts that mount to any glass or plastic lenses, including polycarbonate shooting glasses. Water is the adhesive–the surface tension effect of H20 is enough to keep the lens inserts in place. But this also lets you easily move the magnifying lenses from one set of glasses to another. ReadingGlasses.com offers the Optx 20/20 stick-on lenses for $18.00 (or $29.00 for two pair). Magellan’s, a popular travel accessory store, sells the same Optx 20/20 Lenses, Item #BA726, for $24.85 per pair. Magellan’s notes: “Flexible Optx 20/20 lenses hold fast by their own molecular attraction (no adhesive needed) and can be peeled off and reattached many times”. The video below shows how the stick-on lenses work.
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May 7th, 2009
 Last year, the Cornell Ornithology Lab conducted ScopeQuest 2008, a detailed comparison test of 36 spotting scopes. Optics (ranging in price from $220.00 to $4500.00) were viewed side-by-side and rated according to sharpness, color fidelity, edge-to-edge focus, brightness, distortion, and general optical quality. The testing team also considered ease of handling/focus, and eye relief (scopes with longer eye relief are better for eyeglass wearers). Two of the finest spotting scopes AccurateShooter.com has used, the Zeiss Diascope 85 T FL, and the Swarovski APS 80 HD, performed very well as expected, and ended up near the top of the list. The TeleVue-85 APO, a very large refractor, received the highest ratings for image quality (both at 20X and 60X), but lost points for easy of use and general “feel”. The overall winner among the 36 spotting scopes tested was the Kowa TSN-883 Prominar, a new-generation spotter with a huge 88mm objective, dual focusing knobs, and spectacular flourite glass. The results of Cornell’s spotting scope test are found on the LivingBird.org website. Click the link below for a charrt ranking all 36 scopes according to their overall ratings.
CLICK HERE for Spotting Scope Test Summary (.pdf file)
CLICK HERE for large photo of Kowa TSN-883 on Tripod.
Ken Rosenberg, summarizing the findings of Cornell’s ScopeQuest testers, named the Kowa TSN-883 the big winner. Rosenberg writes: “Fifteen models competed in the most expensive category, including 12 conventional zoom scopes and three astronomy “cross-overs”[.] Among the conventional scopes, the surprising (to us) and virtually unanimous top-of-the-line ranking went to the Kowa TSN-883 Prominar. In side-by-side comparisons with Swarovski, Leica, Zeiss, and Nikon, both Kowa scopes provided a slightly, but noticeably, brighter and crisper image at 60x than any other scope. The three-dimensional detail visible … with these scopes, even in dim light, is simply phenomenal.”
 Rosenberg also gave high praise to the Swarovski ATS 65 HD, noting that it was much lighter and compact than the Kowa 883, while offering nearly the image quality. Rosenberg concludes: “For birders willing to take the plunge for the very best optics at whatever cost, the top choices, in my view, are either the Kowa 883/884 or 773/774 or the Swarovski HD 80mm or 65mm scopes. Any of these top scopes will give you years of pure birding pleasure. Although the larger Kowa offers the brightest, sharpest image available from a conventional zoom scope under the toughest birding conditions, the small Swarovski still delivers the best image per ounce of any scope.”
More Products Worth Considering
The Cornell Test did NOT include some premium spotting scopes, including Pentax’s top-of-the-line PF-100ED, or the new Leica 82mm Televid APO HD. The big Leica APO is considered by many experts to be the new benchmark for spotting scope quality. However, it is enormously expensive. The 82mm Leica APO HD retails for $3200 for the body only. That’s nearly $900 more than the Kowa TSN-883 Prominar body only.
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