যৌগ লেন্স বা লেন্স সিস্টেম বিষমদৃষ্টি মুক্ত এবং আনুমানিক বিন্দু ইমেজ গঠন পাবে পরিকল্পিত

anastigmats's Usage Examples:

Double-meniscus anastigmats use widely separated positive and negative surfaces, generally thick.

(See, for example, Ritchey-Chrétien telescope, or three-mirror anastigmats such as LSST.

There are also a small number of off-axis unobstructed all-reflecting anastigmats which give optically perfect images.

Such systems are called anastigmats.

Also, as the system of Mersenne + Schmidt is the sum of two anastigmats (the Mersenne system is an anastigmat, and so is the Schmidt system).

Rudolph in the first anastigmats (photographic objectives).

anastigmats's Meaning':

compound lens or lens system designed to be free of astigmatism and able to form approximately point images