22-938 25mm Dia. N-SF6 Precision NIR Aspheric Lens; EFL=15mm; NA=0.83 Laser V-Coat 1550nm

The 22-938 is a high-precision NIR (Near-InfraRed) Aspheric Lens, designed for use with a wavelength of 1550nm. This lens is sourced from the renowned optical vendor, Edmund Optics, and boasts a catalog number of 22-938. The lens is constructed from N-SF6 Schott, a high-quality optical material known for its excellent transmission properties in the NIR spectrum.

The lens features a base shape of a circle, with a diameter of 25mm. It has a high numerical aperture (NA) of 0.83, indicating its ability to collect and focus light efficiently. The effective focal length (EFL) of this lens is 15mm, making it suitable for applications that require a compact, high-performance optical component.

The lens is coated with Edmund Optics' Laser V-Coat 1550, a specialized coating designed to enhance the lens' performance in the NIR spectrum. This coating ensures high transmission rates and low reflectivity, making it ideal for use in laser applications.

The geometry of the lens is carefully designed to optimize its performance. It has an inner radius of 0mm and an outer radius of 0mm. The thickness at the edge is 2.35mm, while the thickness at the center is 10mm. The lens' front surface has a radius of curvature (R1) of 8.58mm, while the back surface (R2) is flat. The back focal length (BFL) is 8.67mm.

The lens' front surface is coated with the Edmund Optics' Laser V-Coat 1550, and the back surface also features the same coating. This ensures that the lens performs optimally from both directions, making it a versatile choice for various optical applications.