摘要:
An imaging method and imaging system for inspecting features located at a known inter-feature pitch on portions of a target surface. The system includes a lens array having a plurality of lenses wherein the lenses of the lens array have an inter-lens pitch and an inter-field of view pitch corresponding to the inter-feature pitch, and an array of imaging elements having an inter-element pitch corresponding to the inter-feature pitch, whereby the imaging system images only field of view areas of the target surface containing features.
摘要:
A drilling method and a laser machining apparatus which can shorten the measuring time of workpiece surface height and improve the machining efficiency in spite of irregularities of about 10-30 μm high in the surface of a table. Surface heights of the table is measured at lattice points in advance. Top surface height at a desired point of the workpiece mounted on the table is measured. Surface height of the point is arithmetically obtained using heights of four points surrounding the point. The difference between the measured height and the arithmetically obtained height is set as the plate thickness of the workpiece. Top surface height of the workpiece at a machining position is regarded as the sum of the plate thickness and the height at that position obtained from the table surface heights.
摘要:
A parallel glass which is a prism having a parallelogram-shaped cross section in an x-y direction, and parallel glasses which are prisms having a parallelogram-shaped cross section in the x-y direction and each include grooves formed in one surface in a z direction perpendicular to the x-y direction, are stacked in direct contact with each other such that the grooves are located on the inside, and light trying to enter the grooves is subjected is total reflection, thereby changing incident parallel beams with a pitch of 13 mm into emergent parallel beams with a pitch of 1 mm.
摘要:
A laser machining method and a laser machining apparatus superior in hole position accuracy and hole quality. An outgoing beam outputted as short pulses is shaped by a pulse shaping unit so as to form a #1 branch beam. The #1 branch beam is supplied to a portion to be machined, so as to machine the portion. In this case, the #1 branch beam may be controlled to synchronize with the outgoing beam. When a piece to be machined is made from a metal material and at least one of an organic material and an inorganic material, the metal material is machined with a laser beam shaped to have a pulse width not shorter than 100 ns, and at least one of the organic material and the inorganic material is machined with a laser beam shaped to have a pulse width shorter than 100 ns.
摘要:
In a machining method and a machining apparatus, prior to machining, an NC control unit makes an X-axis drive unit move a table based on examination conditions specified in advance. Thus, the NC control unit obtains a stabilization time required from the command-reach time of a poisoning command and till the stabilization of position response of the table within a predetermined allowable range. Likewise, for moving a drill in a Y-axis direction, the NC control unit obtains a stabilization time required till the stabilization of position response within a predetermined allowable range. At the time of machining, the drill is moved in a Z-axis direction to cut into a printed wiring board as soon as the obtained stabilization time has passed.
摘要:
An apparatus and method for maintaining a desired position of a collimated light beam are provided. An optical system includes one or more passive optical elements movably positioned in the beam path. Beam position is responsive to movement of at least one of the passive optical elements. The actual position of the beam is detected and compared with the desired beam position. An error signal is generated and the beam path is altered responsive to movement of one or more of the passive optical elements. In further aspects, beam shaping optics, such diffractive optics, are provided to shape the sensed beam portion. In still other aspects, thermal conditions of the laser may be monitored and a thermal map is provided to automatically compensate for estimated beam drift due to thermal conditions.
摘要:
A compensator/remapper and method for compensation and remapping of a laser beam for control and correction of laser pointing and thermal drift instability in a laser beam delivery system including a laser generating a laser beam and a plurality of optical elements for directing, shaping and focusing the laser beam along a beam path to a target. A compensator/remapper includes a compensator element and a remapper element. The compensator element receives an input laser beam having a range of input angles and lateral displacements and redirects components of the input laser beam into an aligned laser beam having evenly distributed and parallel components. The remapper element is illuminated by the aligned laser beam from the compensator element and remaps the components of the aligned laser beam into a shaped laser beam having a profile that is optimum for remapping into a flat top laser beam.
摘要:
The invention provides a method and an apparatus for forming a plurality of ultraviolet-wavelength laser beams, and a laser machining apparatus, in which the machining efficiency can be improved due to easy maintenance and inspection while deterioration of wavelength conversion means can be prevented to reduce the running cost. A laser beam with a near infrared wavelength output from a laser oscillator is branched into a plurality of laser beams by a laser distribution unit. Each branched laser beam is partially converted into a laser beam whose wavelength is ½ of the near infrared wavelength by a wavelength converter. An ultraviolet laser beam whose wavelength is ⅓ of the near infrared wavelength of the laser beam is formed out of the branched laser beam and the laser beam with the wavelength which is ½ of the near infrared wavelength by another wavelength converter, both the branched laser beam and the laser beam with the wavelength which is ½ of the near infrared wavelength being output from the wavelength converter. The ultraviolet laser beam is extracted and supplied to a portion to be machined, by a wavelength separator.
摘要:
A pattern exposure method and a pattern exposure apparatus in which the throughput is improved with an inexpensive apparatus and without a low running cost. Output faces of a plurality of laser beams emitted from a plurality of semiconductor lasers respectively are arranged in two directions. One of the directions is the same direction as the scanning direction of a polygon mirror while the other is a direction crossing the scanning direction of the polygon mirror. In this event, the array pitch of the output faces arranged in the direction crossing the scanning direction of the polygon mirror is made equal to resolution of an exposure pattern. In this event, the wavelength of each laser may be made not longer than 410 nm.
摘要:
A laser machining method and a laser machining apparatus superior in hole position accuracy and hole quality. An outgoing beam outputted as short pulses is shaped by a pulse shaping unit so as to form a #1 branch beam. The #1 branch beam is supplied to a portion to be machined, so as to machine the portion. In this case, the #1 branch beam may be controlled to synchronize with the outgoing beam. When a piece to be machined is made from a metal material and at least one of an organic material and an inorganic material, the metal material is machined with a laser beam shaped to have a pulse width not shorter than 100 ns, and at least one of the organic material and the inorganic material is machined with a laser beam shaped to have a pulse width shorter than 100 ns.