33-397 25mm Dia. x 200mm FL; VIS-NIR Coated; Double-Convex Lens VIS-NIR 400-1000nm

The 33-397 is a high-quality double-convex lens, sourced from the renowned optical vendor, Edmund Optics. This lens boasts a 25mm diameter and a focal length of 200mm, making it suitable for a wide range of applications within the visible to near-infrared spectrum (VIS-NIR), specifically designed for use within the wavelength range of 400-1000nm.

The lens is constructed from the high-grade material, n-BK7 Schott, a borosilicate crown glass known for its excellent optical properties, including a low refractive index and low dispersion. This makes the lens ideal for applications requiring high image quality and color correction.

The 33-397 features a front and back coating of edm visnir0sp2002000, a VIS-NIR coating designed to enhance the lens's performance within the specified wavelength range. This coating reduces surface reflections, increasing transmission and improving overall image quality.

The lens's geometry is meticulously designed, with an inner radius of 0 and an outer radius of 0, ensuring optimal light transmission and focus. The thickness at the edge of the lens is 4.24mm, while the center thickness is 5mm, providing a robust and durable design.