MNP201 25.4 mm Dia. N-BK7 Positive Meniscus Lens; EFL=100mm Uncoated

The MNP201 is a 25.4 mm diameter Positive Meniscus Lens, sourced from the reputable vendor WTS Photonics. This lens is designed with a unique convex-concave spherical shape, making it a versatile choice for various optical applications. The lens's base shape is circular, contributing to its robust optical performance.

The lens's geometry is meticulously crafted, with a thickness edge of 2.39 mm and a thickness center of 4 mm. The effective focal length (EFL) is 100 mm, making it suitable for applications requiring a longer focal length. The first radius of curvature (r1) is 33.42 mm, while the second radius (r2) is 89.95 mm, indicating a significant curvature difference that contributes to its meniscus shape. The back focal length (BFL) is 96.01 mm, which is crucial for determining the lens's placement within an optical system.

The lens is made from N-BK7 Schott, a popular optical glass known for its excellent optical properties and versatility. The wavelength for this lens is 588 nm, making it suitable for applications within this spectral range. The lens is uncoated, which may be beneficial depending on the specific application requirements.