A230 6.34 mm Dia. S-NPH1 Aspheric Lenses; EFL=4.51 mm; NA=0.55 Uncoated

The A230 is a high-quality aspheric lens, sourced from the renowned optical component manufacturer, Thorlabs. This lens is designed with a circular base shape and a diameter of 6.34 mm, making it suitable for a wide range of optical applications. The lens is made from S-NPH1 material, a type of Ohara glass known for its excellent optical properties.

The A230 lens is designed to operate at a wavelength of 780 nm, and it has an effective focal length (EFL) of 4.51 mm. This EFL, combined with the lens's numerical aperture (NA) of 0.55, allows for a tight focus and high resolution, making it ideal for applications that require high-precision imaging.

The lens's geometry is carefully crafted to ensure optimal performance. It has an inner radius of 0 mm and an outer radius of 0 mm, with a thickness at the edge of 1.36 mm. The thickness at the center of the lens is 2.94 mm, providing structural rigidity while minimizing optical distortion.

The A230 lens features a sophisticated aspheric design, which is characterized by its conic constant (k1) of 0 and its aspheric coefficients (a2 to a16). These coefficients are carefully calculated to correct spherical aberration and other optical aberrations, resulting in superior image quality.

Notably, the A230 lens is uncoated. While coatings can enhance the performance of optical elements by reducing reflection and increasing transmission, this lens is designed to provide excellent performance even without them. This makes it a cost-effective solution for applications that do not require coated lenses.