Optical Coatings

by
posted on March 18, 2014
qa_ah2015_fs.jpg (10)

Q: What is the difference in binocular and scope lens coatings, and how can you tell if the glass is coated?

A: One way to check a riflescope, spotting scope or binocular for coated lenses is to hold it under a common ceiling light, objective lens up, and look at the reflections of the light bouncing off the various lens surfaces inside. Each reflection (usually three to seven) represents one air-to-glass surface. If this lens surface has been coated, its reflection should be colored, usually purple, green or yellow, depending on the proprietary coating recipe the manufacturer used. White reflections indicate an uncoated lens or, in a binocular, the prism.

Unfortunately, colored reflections don't tell you how many layers have been applied or how effective they are. Determine effectiveness by comparing scopes side-by-side in low light. The best test is to look at some type of lettering or a series of black-and-white bars set in shadows with the sun setting behind.

Latest

Trijicon New MRO SD Lead
Trijicon New MRO SD Lead

First Look: Trijicon New MRO SD

The next generation of Trijicon’s Miniature Rifle Optic is optimized for use with a magnifier.

Revolver Build: Fink's Custom Taurus Raging Hunter .44 Magnum

This big bore revolver is tricked out for handgun hunting, defense against dangerous game and personal protection. 

First Look: JK Armament RPX .30Cal Suppressor

JK Armament is proud to announce its all-purpose .30-caliber suppressor, the JK 155 RPX .30CAL.

Behind the Bullet: 6.5-300 Weatherby Magnum

Curious about the 6.5-300 Weatherby Magnum? Learn about the history and performance of this storied cartridge in Phil Massaro's latest Behind the Bullet.

First Look: Rossi LWC Folding Stock

Rossi's Lightweight Carbine (LWC) has been a favorite truck gun and scouting rifle for hunters since its introduction. Now, Rossi USA is taking it a step further with the launch of the Rossi LWC Folding Stock—available both as a complete rifle and as an easy-to-install accessory for current LWC owners.

Safe Gun Storage After Hunting Season

With the close of deer seasons, many hunters have stored their firearms. While the basics of gun safety are covered in hunter education programs, the Maryland Department of Natural Resources (MDNR) recently issued a reminder that storage out of season should be reviewed by sportsmen.

Interests



Get the best of American Hunter delivered to your inbox.