Double-Concave Lens, N-BK7, AR Coating: 700 nm-1100 nm, Unmounted BCC10610-B

Double-Concave Lens, N-BK7, AR Coating: 700 nm-1100 nm, Unmounted — Model BCC10610-B

Operating wavelength 700 nm-1100 nm, focal length -50.0 mm, Ø25.4 mm, substrate N-BK7.

Product Description

• Optical Material: N-BK7
• Operating Wavelength: 700 nm-1100 nm (AR Coating)
• Application: Imaging, Beam Expansion

LBTEK double-concave lenses feature concave surfaces on both sides with equal radii of curvature. With a negative focal length, these lenses are commonly used for beam collimation, focal length adjustment, and image reduction or magnification. LBTEK offers double-concave lenses fabricated from N-BK7, the most widely used optical glass for visible and near-infrared applications. In addition, N-SF11 double-concave lenses are available; with a lower Abbe number, N-SF11 enables shorter focal lengths compared to N-BK7. A variety of coating options are provided, including uncoated, 400–700 nm, 700–1100 nm, and 1100–1650 nm broadband AR coatings, to support diverse application needs. Each lens is precisely manufactured and quality-controlled to ensure that LBTEK delivers high-performance optics at competitive prices.

Double-Concave Lens, N-BK7, AR Coating: 700 nm-1100 nm, Unmounted

• Substrate Material: N-BK7
• Operating Wavelength: 700 nm-1100 nm (AR Coating)
• Application: Imaging, Beam Expansion

The LBTEK bi-concave lens has a negative focal length and is commonly used in applications such as imaging or beam collimation. LBTEK bi-concave lenses are manufactured using N-BK7 glass that complies with RoHS standards. N-BK7 is the most commonly used material for high-quality optical components, primarily applied in visible and near-infrared fields. All circular lenses from LBTEK can be mounted in LBTEK standard lens sleeves, fixed lens holders, and various coaxial mounting plates. Customers can choose the optimal mounting method for different application scenarios.