Optisan LR ED 10×34 Binoculars (Olive Green)

Description

Featuring a sub-pound open-hinge chassis, the Optisan LR ED 10×34 Binoculars (Olive Green) yields a 318-foot field of view at 1000 yards (6.1-degree actual). The compact 3.4mm exit pupil and 16mm eye relief accommodate eyeglasses cleanly. Image brightness drops off quickly in heavy canopy shade compared to larger 42mm roof binoculars.

Japanese-specified ED glass elements feed phase-corrected BaK-4 roof prisms treated with dielectric mirror coatings, producing 86 percent light transmission. The Swissamotec open-bridge chassis is clad in olive green rubber, measuring 5.0 by 5.1 inches at 16.9 oz (480 g). IPX7 waterproof and nitrogen purged, it features a central focus wheel reaching 6.6 feet (2 m), a -4 to +4 diopter ring, and twist-up eyecups.

Key Features of Optisan LR ED 10×34 Binoculars (Olive Green)

Built for minimalist backpackers and birders who need ten-power reach without carrying bulky full-sized glass. The dual-hinge open bridge allows your fingers to wrap securely around the barrels for steady one-handed glassing.

• 10x magnification through 34mm objective lenses with a 3.4mm exit pupil
• Phase-corrected BaK-4 roof prisms with high-reflectivity dielectric mirror coatings
• Japanese-engineered extra-low dispersion (ED) objective glass elements
• 318 ft field of view at 1000 yd (6.1-degree actual angle)
• 16mm eye relief paired with multi-position twist-up eyecups
• 6.6-foot close focus distance suited for near-range butterfly inspection
• IPX7 waterproof and nitrogen-purged Swissamotec open-bridge chassis
• Lightweight 16.9 oz body finished in protective olive green rubber armor

ED Optical Elements & Dielectric Coatings

Achromatic ED lenses suppress secondary spectrum color fringing, keeping plumage details sharp against bright sky backgrounds. Dielectric prism coatings preserve light throughput across the visible spectrum, maintaining neutral color reproduction across 80 percent of the frame before slight edge softening begins.

Open-Hinge Ergonomics & IPX7 Sealing

The open-bridge frame reduces hand strain by providing a natural wrap-around grip, keeping views steady when glassing on steep trails. The central focus dial turns with smooth, grease-damped friction, and the Swissamotec composite chassis survives water immersion down to 1 meter for 30 minutes.

• Smooth central focus dial provides backlash-free adjustment in cold weather
• IPX7 waterproof rating ensures complete protection against rain squalls and puddles
• Multi-position twist-up eyecups maintain firm spacing without collapsing under eye contact

Optisan Warranty Protection & Box Gear

Optisan backs this optic with their standard manufacturer warranty against defects in materials and craftsmanship. The complete factory package contains the Optisan LR ED 10×34 Binoculars (Olive Green), water-resistant protective pouch, neoprene neck strap, objective detachable caps, ocular protective cap, and an optical cleaning cloth.