Infinity-corrected optics
An objective design in which the back focal plane produces a collimated (afocal) beam rather than a converging beam, allowing optical elements to be inserted in the parallel-beam path without introducing aberration.
An objective design in which the back focal plane produces a collimated (afocal) beam rather than a converging beam, allowing optical elements to be inserted in the parallel-beam path without introducing aberration.
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