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Leupold’s Index Matched Lens System

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Chris Farris View Drop Down

Joined: October/01/2003
Location: Texas
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    Posted: December/28/2004 at 11:16

In designing an Index Matched Lens System riflescope, Leupold optical engineers match the type of glass used in each lens with the ideal coating for that lens by balancing the index of refraction needed in both the lens glass and the lens coating. This gives each coated lens the best possible optical performance in the riflescope. The result is a riflescope with optimal light management and maximum light transmission, which provides an image of superior clarity and brightness.


Here’s how the Leupold Index Matched Lens System works: Leupold engineers specified very low reflection of light at several key points across the range of colors that the human eye can see. Light that doesn’t reflect off the lens surfaces transmits through and contributes to a crisp, true-colored and brilliant image. The light that is transmitted does not bounce around inside the scope, causing glare that can degrade the contrast. Since dozens of different glass types are available, the lens technicians had to pick just the right coating material for each individual lens surface. They also matched the ideal coating materials to each lens’ glass type and layered these different substances to minimize reflections and maximize performance. The result? Some of the new VX-III riflescopes have measured as high as 98 percent TOTAL light transmission, which means you’ll get brightness and clarity like you’ve never seen before.


Leupold’s VX-III riflescopes feature the Index Matched Lens System™.

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