Device for imaging by an optical system and system for testing an optical system to be tested

摘要

Device (100) for imaging by an optical system to be tested (OS), the device (100) having the following characteristics:a first device section (110) with a first transmission level for electromagnetic waves; anda second device section (120) with a second transmission rate for the electromagnetic waves, the second transmission rate being higher than the first transmission rate,at least one of the device sections (110, 120) is ring-shaped.