67-245 25 mm Dia. N-SF5 Precision Aspheric Lens; EFL=15mm; NA=0.83 Uncoated

The 67-245 is a high-performance aspheric lens, boasting a 25 mm diameter and a numerical aperture (NA) of 0.83. This lens is sourced from the renowned optical vendor, Edmund Optics, and is available for purchase on their official website. The product link provided in the item data indicates that the lens is currently in stock, ensuring prompt delivery for your optical project needs.

The lens is made from N-SF5 Schott, a high-quality optical glass known for its excellent transmission properties and chemical resistance. The aspheric design of the lens, combined with its precise geometry, allows for superior image quality with minimal spherical aberration. The lens's effective focal length (EFL) is 15 mm, making it suitable for a wide range of applications that require compact, high-performance optics.

The geometry of the lens includes an inner radius of 0 mm, an outer radius of 0 mm, a thickness at the edge of 1.64 mm, and a thickness at the center of 11 mm. The lens's front surface has a radius of curvature of 10.091 mm, while the back surface is planar. The lens's NA of 0.83 indicates a wide acceptance angle, allowing for efficient light collection in various imaging and illumination applications.

Notably, the lens is uncoated, which may be advantageous depending on the application. Uncoated lenses can provide higher damage thresholds and lower costs compared to coated lenses. However, they may have higher surface reflections, which could impact overall system performance. Therefore, it is essential to consider the specific requirements of your application when selecting this lens.