24-290 25mm Dia. Silicon Aspheric Lens; EFL=50mm; NA=0.25 BBAR 1650-3000nm

This is a 25mm diameter aspheric lens, catalog number 24-290, sourced from the renowned optical vendor, Edmund Optics. The lens is designed with an effective focal length (EFL) of 50mm and a numerical aperture (NA) of 0.25, making it suitable for a wide range of optical applications.

The lens is made of silicon, specifically silicon sal vil 1957, and features a broadband anti-reflection (BBAR) coating that enhances its performance in the 1650-3000nm wavelength range. This coating reduces surface reflections, thereby improving light transmission and image quality.

The lens's geometry is intricately designed with an inner radius of 0 and an outer radius of 0, ensuring optimal light transmission and minimal distortion. The lens has a thickness of 2.3mm at the edge and 3mm at the center, providing robustness and stability.

The front and back surfaces of the lens are coated with the same BBAR coating, ensuring consistent performance across the lens. The lens's shape is aspheric, which allows for superior optical performance compared to traditional spherical lenses.

The lens is currently in stock and available for immediate purchase through the provided weblink. With its high-quality materials, advanced coating, and precise geometry, this lens is an excellent choice for various optical applications.