The book presents a new method for evaluating lens image quality using the Cumulative Line Spread Function (CLSF). The method is based on the construction of an optical test system with a line source (object) and a variable scanning slit of the image formed by the system. The practical measurement results are compared with theoretical results calculated using the optical design program GINII software. To further validate the findings, the results are also compared with previous work conducted by BARAKAT.
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