What is another word for aplanatic?
Pronunciation: [ɐplɐnˈatɪk] (IPA) 
Aplanatic is an optical term that describes a lens or system that produces an image free of spherical aberration, coma, and astigmatism. Other synonyms that can be used for aplanatic include distortion-free, aberration-corrected, and perfect imaging. Additionally, the term can also be used in reference to telescopes or microscopes that provide clear and sharp images without any distortion. Some other related terms include achromatic, anastigmatic, and diffraction-limited, which also describe optical systems free of particular aberrations. These terms are often used interchangeably to refer to systems that produce high-quality images with minimal or no aberrations.
