Bessel laser system with variable focal length mechanism capable of dynamically adjusting focal length during laser processing

The present invention relates to a Bessel laser system with variable focal length mechanism, which enables a laser emitting device that generates a laser beam with fixed diameter to achieve the variable focal length effect by changing diameter of laser beam. In one embodiment, a diameter adjusting m...

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Bibliographische Detailangaben
1. Verfasser:	HON, SCHANG-JING
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING DEVICES USING STIMULATED EMISSION ELECTRICITY FREQUENCY-CHANGING MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICAL LOGIC ELEMENTS OPTICS PERFORMING OPERATIONS PHYSICS SOLDERING OR UNSOLDERING TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	The present invention relates to a Bessel laser system with variable focal length mechanism, which enables a laser emitting device that generates a laser beam with fixed diameter to achieve the variable focal length effect by changing diameter of laser beam. In one embodiment, a diameter adjusting module may change the diameter of laser beam; then, a modulating phase conversion module may change the laser beam into a gradually and radially symmetrical gradual diameter; finally, a focusing lens module may focus the laser beam at a working point. In another embodiment, the modulating phase conversion module may change the laser beam into the gradually and radially symmetrical gradual diameter; then, a variable curvature lens module may change the diameter of laser beam; finally, the focusing lens module may focus the laser beam at a working point. The present invention may also mix the aforementioned applications to achieve better variable focal length effect.