LB1406 N-BK7 Bi-Convex Lens; Dia:6.0 mm; f=12.0 mm Uncoated

The LB1406 N-BK7 Bi-Convex Lens is a high-quality optical component sourced from Thorlabs, a leading vendor in the field of optical equipment. This lens, with a diameter of 6.0 mm, is designed for use in a variety of optical systems, offering a focal length of 12.0 mm for precise focusing and imaging capabilities.

The lens is made from N-BK7, a type of borosilicate glass known for its excellent optical properties. This material is characterized by a low coefficient of thermal expansion, making it resistant to thermal shock and suitable for use in a wide range of temperatures. The N-BK7 glass also offers high homogeneity and low optical dispersion, ensuring high-quality image transmission and minimal chromatic aberration.

The LB1406 lens features a spherical geometry, with both surfaces curved to facilitate light convergence or divergence. The first surface has a radius of curvature of 12.0 mm, while the second surface has a radius of -12.0 mm. This bi-convex design provides a large acceptance angle, making it suitable for use in systems with a wide range of incident angles.

The lens has a central thickness of 2.3 mm and an edge thickness of 1.5 mm, providing structural rigidity while maintaining a compact form factor. The effective focal length (EFL) of the lens is 12.0 mm, which, combined with the 6.0 mm diameter, results in a high numerical aperture (NA) for superior light-gathering capabilities.

The lens is uncoated, meaning it does not have any anti-reflective or protective coatings. While this may result in higher reflective losses, it also means the lens is less susceptible to damage from environmental factors or handling.