Diffractive optical system with synthetic opening and laser cutting device incorporating this system
作者： Jean-Paul Grandjean , Patrice Twardowski , Patrick Meyrueis , Bernard Kress
DOI:
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摘要: An optical device for focusing a light beam. The includes Fourier diffractive element that can separate an incident beam into n beams along directions which are symmetric about axis. also including Fresnel lenses capable of refocusing the onto may be used with lasers and laser cutting devices.
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