LBTEK-Your Trusted Partner For Optoelectronic Experiments!

Product Description

Optical Material: N-BK7
Operating Wavelength: 400 nm-700 nm (AR Coating)
Application: Imaging, Beam Expansion

LBTEK Double-Concave Lenses feature two concave surfaces with equal radii of curvature and provide a negative focal length. These lenses are commonly used for beam collimation, focal length adjustment, or image reduction/magnification. LBTEK offers double-concave lenses made from N-BK7, one of the most widely used optical glasses for high-quality components, suitable for applications in the visible and near-infrared regions. In addition to N-BK7, LBTEK also provides N-SF11 double-concave lenses, which, due to their lower Abbe number, are typically used in designs requiring shorter focal lengths. To meet different system requirements, LBTEK supplies both uncoated double-concave lenses and AR-coated versions optimized for 400–700 nm, 700–1100 nm, and 1100–1650 nm. All lenses are precisely manufactured and subject to strict quality control, ensuring that LBTEK delivers reliable, high-performance optical components at competitive prices.

Attribute

Optical component materialN-BK7

Design wavelength587.6 nm

Operating Wavelength400 nm-700 nm

Surface finish (scratches/pits)40/20

Local surface irregularity0.5

Curved Aperture3

Eccentricity≤3 arcmin

Double-concave Lens, N-BK7, AR Coating: 400 nm-700 nm

Substrate Material: N-BK7
Operating Wavelength: 400 nm-700 nm (AR Coating)
Application: Imaging, Beam Expansion
Pre-installed Mechanical Housing

The LBTEK double-concave lens has a negative focal length and is commonly used in applications such as imaging or beam collimation. LBTEK double-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 the visible and near-infrared spectral ranges. All LBTEK circular lenses come pre-installed with standard lens sleeves or lens mounting adapters. These mechanical components are engraved with product model numbers, types, diameters, and focal lengths for easy identification of lens parameters by users.

The LBTEK lens housing surface is engraved with product model and other information.

	Product Model	Diameter	Focal length	Unit Price	Compare	Lead Time
	MBCC10612-A	25.4 mm	-75.0 mm	$46.94		6 weeks
	MBCC10610-A	25.4 mm	-50.0 mm	$45.63		6 weeks

Double-Concave Lens, N-BK7, AR Coating: 400 nm-700 nm, Unmounted

Substrate Material: N-BK7
Operating Wavelength: 400 nm-700 nm (AR Coating)
Application: Imaging, Beam Expansion

The LBTEK doube-concave lens has a negative focal length and is commonly used in applications such as imaging or beam collimation. LBTEK double-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.

LBTEK lens not installed is suitable for building compact systems

Product Model	Diameter	Focal length	Unit Price	Lead Time
BCC10613-A	25.4 mm	-100.0 mm	$33.86	6 weeks
BCC10612-A	25.4 mm	-75.0 mm	$34.91	6 weeks
BCC10610-A	25.4 mm	-50.0 mm	$34.91	6 weeks