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diffraction limitedIn optics, pertaining to a light beam in which the far-field beam divergence is equal to that predicted by diffraction theory. 2. In focusing optics, pertaining to a light beam in which the impulse response or resolution limit is equal to that predicted by diffraction theory. [After 2196]
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diffraction limitedElectromagnetic waves diffract around the edges of opaque objects or on passing through or reflecting off a finite aperture, like a dish, lens or mirror. Even if such a wave is perfectly collimated, [..]
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