24-288 25mm Dia. Silicon Aspheric Lens; EFL=12.5mm; NA=1 BBAR 1650-3000nm

This is a 25mm diameter Silicon Aspheric Lens, catalog number 24-288, sourced from the renowned optical vendor, Edmund Optics. The lens is specifically designed for use within the wavelength range of 4000nm, making it suitable for a variety of applications that require high-performance optics in the infrared spectrum.

The lens features an effective focal length (EFL) of 12.5mm, providing a compact and efficient optical solution. The aspheric design allows for superior image quality, reducing spherical aberration and distortion often associated with traditional spherical lenses. This results in sharper images with increased contrast and resolution.

The lens is coated with BBAR (Broadband Anti-Reflection) coating, specifically designed for the 1650-3000nm wavelength range. This coating significantly reduces surface reflections, improving transmission and enhancing overall system performance. The coating is applied to both the front and back surfaces of the lens, ensuring optimal performance from all angles.

The lens has a numerical aperture (NA) of 1, indicating a high light-gathering capability. This is particularly beneficial in low-light conditions or when high resolution is required. The lens also features a center thickness of 4.75mm and an edge thickness of 2.37mm, providing robustness and durability.

The item data also provides information about the lens's geometry, including inner and outer radii, as well as various other parameters. However, these are more technical in nature and may not be as relevant to the average user.