354220 7.2 mm Dia. D-ZK3 Molded Glass Aspheric Lenses; EFL=11 mm; NA=0.25 Uncoated

The 354220 7.2 mm Dia. D-ZK3 Molded Glass Aspheric Lens is a high-quality optical component sourced from Thorlabs. This lens, with a catalog number 354220, is currently in stock and available for immediate purchase through their website.

This aspheric lens is made of D-ZK3 CGDM glass, a material known for its excellent optical properties. The lens has a diameter of 7.2 mm and a thickness of 4.212 mm at the edge, making it suitable for a wide range of optical applications. The effective focal length (EFL) of this lens is 11 mm, and it has a numerical aperture (NA) of 0.25, providing a good balance between field of view and resolution.

The lens's geometry is defined by its inner and outer radii, both of which are 0 in this case. The lens's front and back surfaces have different aspheric coefficients, with the front surface having coefficients from a2 to a16 set to 0, and the back surface having coefficients from a2 to a6, also set to 0. This indicates a relatively simple aspheric shape, which can help minimize spherical aberration and other optical aberrations.

Notably, this lens is uncoated. While coatings can enhance the performance of optical components by reducing reflection, increasing transmission, or providing other benefits, an uncoated lens can be a cost-effective choice for applications where such enhancements are not necessary.