An optical lens for laser marking includes a first lens (L1), a second lens (L2), and a third lens (L3), which are successively coaxially arranged along a transmission direction of incident light, wherein the first lens (L1) and the second lens (L2) are meniscus lenses, and the third lens (L3) is a biconvex lens; wherein the first lens (L1) has a first surface (S1) and a second surface (S2), the second lens (L2) has a third surface (S3) and a fourth surface (S4), the third lens (L3) has a fifth surface (S5) and a sixth surface (S6); the first surface (S1) to the sixth surface (S6) are successively arranged along the transmission direction of the incident light; wherein radii of curvature of the first surface to the sixth surface are −47±5% mm, ∞, −218±5% mm, −81±5% mm, 778±5% mm, and −142±5% mm, respectively; wherein central thicknesses of the first lens, the second lens, and the third lens are 4±5% mm, 15±5% mm, and 18±5% mm, respectively. The optical lens for laser marking not only has high engraving quality, but also has a high engraving speed with a higher efficiency than conventional engraving lens.

A method for cutting a transparent brittle material using pulsed laser-radiation is disclosed. A beam of pulsed laser-radiation having an optical-axis is focused in the material by a variable-focus lens or mirror. The focus is translated along the optical-axis while the material is moved with respect to the beam to create an array of defects along a cutting path.

The present invention relates to a laser material processing system for processing a workpiece by means of a laser beam, comprising an optical system having at least one optical component for focusing the laser beam to form a focal point on the workpiece or in a defined position relative to the workpiece, at least one inertial sensor for detecting a transitional and/or rotational acceleration of the at least one optical component of the optical system and/or the workpiece, and a processing unit connected to the at least one inertial sensor for determining a relative transitional and/or rotational acceleration between the focal point and the workpiece.

This shaping apparatus is equipped with: a movement system which moves a target surface; a measurement system for acquiring position information of the target surface in a state movable by the movement system, a beam shaping system that has a beam irradiation section and a material processing section which supplies a shaping material irradiated by a beam from beam irradiation section; and a controller. On the basis of 3D data of a three-dimensional shaped object to be formed on a target surface and position information of the target surface acquired using the measurement system, the controller controls the movement system and the beam shaping system such that a target portion on the target surface is shaped by supplying the shaping material while moving the target surface and the beam from beam irradiation section relative to each other.

A lens module, comprising a first lens, a second lens and a third lens sequentially and coaxially arranged in the transmission direction of incident light. The first lens is a biconcave lens, the second lens is a meniscus lens, and the third lens is a biconvex lens. The first lens comprises a first curved surface and a second curved surface. The second lens comprises a third curved surface and a fourth curved surface. The third lens comprises a fifth curved surface and a sixth curved surface. The first to the sixth curved surfaces are sequentially arranged in the transmission of the incident light, and the curvature radii of the first to the sixth curved surfaces are sequentially −37±5%, 400±5%, −130±5%, −60±5%, 360±5%, and −68±5%, in a unit of millimeter. Due to the arrangement and parameter design of the first to the third lenses of the lens module, the 3D printer can achieve high machining precision. The present invention also provides a 3D printer and a 3D printing method thereof.

An apparatus for material deposition on an acceptor surface includes a transparent donor substrate having opposing first and second surfaces, such that at least a part of the second surface is not parallel to the acceptor surface, and including a donor film on the second surface. The apparatus additionally includes an optical assembly, which is configured to direct a beam of radiation to pass through the first surface of the donor substrate and impinge on the donor film at a location on the part of the second surface that is not parallel to the acceptor surface, so as to induce ejection of droplets of molten material from the donor film onto the acceptor surface.

A material joining end effector generally includes a first arm, an optics assembly, a clamp, and a second arm. The first arm elongated along a longitudinal axis. The optics assembly is configured to focus an energy beam. The clamp is movably coupled to the first arm, the clamp being configured to move along a direction substantially parallel to the longitudinal axis. The second arm is rotationally coupled to the first arm, the second arm being configured to rotate relative to the first arm. The clamp is configured to removably couple the optics assembly to the first arm to allow the optics assembly to be decoupled from the first arm.

A piercing processing method and a laser processing machine capable of carrying out a piercing processing on a thick plate in short time are provided. It is a processing method for carrying out a piercing processing on a metallic material by laser beams with wavelengths in 1 μm band, where the piercing processing is carried out by maintaining a range of 8≦Zr/d≦12 when a condensed beam diameter of the laser beams is set to be d and a Rayleigh length of the laser beams is set to be Zr. At that time, a focal position of the laser beams is set to be on a surface of a workpiece or an external of the workpiece. Then, a beam profile of the laser beams is such that the laser beams of a single mode are converted into a bowler hat shape by a beam quality tunable device.

The invention provides a multi-segment focusing lens for effective laser processing method that allows to cut/scribe/cleave/dice or, generally speaking, separate, hard, brittle, and solid wafers or glass sheets, which are either bare or have microelectronic or MEMS devices formed on them. The multi-segment focusing lens is used in a laser processing method comprises a step of modifying a pulsed laser beam by a shaping and focusing unit, including a multi-segment lens. Said multi-segment lens creates multiple beam convergence zones, more particularly, multiple focal points, said and interference spike shape intensity distribution exceeding the optical damage threshold of the workpiece material. Said interference spike shape intensity distribution is situated in the bulk of the workpiece. During the aforementioned step a modified area is created. The laser processing method further comprises a step of creating a number of such damage structures in a predetermined breaking line or curved trajectory by relative translation of the workpiece in relation to the focal point of the laser beam.

A laser beam machine includes a laser oscillator that emits a machining laser beam, an irradiation optical system that irradiates a workpiece with a machining laser beam, a laser array that has a plurality of laser elements disposed in an array and emits an illumination laser beam by output of the plurality of laser elements, an illumination optical system that illuminates the workpiece with the illumination laser beam emitted by the laser array, and an imaging unit that images the workpiece which is illuminated by the illumination optical system with the illumination laser beam.