LM01-25-250 25.4 mm Dia. N-BK7 Positive Meniscus Lens; EFL=250mm Uncoated

The LM01-25-250 is a spherical lens with a base shape of a circle, designed and manufactured by CeNing Optics. This lens is a positive meniscus type, meaning it has a convex-concave geometry, and is uncoated. The lens has a diameter of 25.4 mm and a thickness at the edge of 2.9 mm, while the center thickness is 3.5 mm.

The effective focal length (EFL) of this lens is 250mm, making it suitable for applications that require long focal lengths. The first radius of curvature (R1) is 83.96 mm, and the second radius (R2) is 235 mm. The back focal length (BFL) is 246.5 mm. The lens is made of N-BK7 Schott, a popular optical glass known for its excellent optical properties and wide transparency range.

This lens is designed to work with a wavelength of 546.1 nm, making it suitable for applications in the visible light spectrum. The lens is uncoated, which means it does not have any anti-reflective or other coatings. While this may result in higher reflective losses, it also means the lens is more cost-effective and easier to clean.

According to the vendor's website, this lens is currently in stock, making it readily available for immediate use. The item data also provides a link to the vendor's website for further information or to place an order.