Highly Polished Surfaces: This ensures minimal distortion and maximum clarity when the lenses are used for optical purposes.
Ground Edges: This provides a smooth finish to the lens edges, which is important for handling and fitting into optical setups without causing damage.
Available Diameters: The lenses are offered in various diameters, including 38mm, 50mm, 60mm, 75mm, and 100mm. Different diameters allow for flexibility in experimentation and application, accommodating various optical setups and requirements.