Patent
Laser beam irradiation apparatus and laser working machine
TLDR
In this article, a control unit determines an actual output power of the laser beam based on a light reception signal received from laser beam output detection means in response to a control signal for controlling a deflection angle adjustment unit of the deflection unit.Abstract:
A laser beam irradiation apparatus includes an oscillation unit, an acousto-optic deflection unit for deflecting a laser beam oscillated by the oscillation unit, a condenser for condensing the deflected laser beam, and a control unit. The control unit determines an actual output power of the laser beam based on a light reception signal received from laser beam output detection means in response to a control signal for controlling a deflection angle adjustment unit of the deflection unit. Then, the control unit arithmetically operates the ratio of an actual output power corresponding to the control signal with reference to the lowest value of the actual output power. Further, the control unit arithmetically operates a correction value corresponding to the ratio of the actual output power to produce a control map and controls the output adjustment unit based on the control map.read more
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Patent
Laser beam processing machine
TL;DR: In this paper, a laser beam processing machine comprising a path distribution means for distributing a pulse laser beam oscillated by pulse laserbeam oscillation means to a first path and a second path alternately, and one laser beam that passes through one of the paths and is converged by one condensing lens and the other laser beam is applied at different focusing points which have been displaced from each other in the direction of the optical axis.
Patent
Laser processing device
TL;DR: In this paper, the authors present a laser condensing optical system which includes a laser beam source, a condensing system which is arranged between the beam source and a medium and condenses the laser beam in the medium, and a laser divergence point moving unit, which can move the position of the divergence point along an optical axis of the beam along with the refractive index.
Patent
Laser beam machining apparatus
TL;DR: In this paper, a laser beam machining apparatus is described, which includes a memory for storing coordinates of an arcuate chamfer part formed at the outer periphery of the wafer and coordinates of a flat surface part surrounded by the chamf part, and a repetition frequency setting section so as to set the repetition frequency of the pulses in the laser beam with which to irradiate the arboric part to a value suitable for machining of a wafer.
Patent
Laser processor and laser processing method
TL;DR: In this paper, a laser processor that applies laser processing to the processed object is characterized in comprising a chunk table that holds the processed objects, a laser beam irradiation member that includes a laser oscillator and a processing head, wherein the processing head a condenser lens that condenses laser beam oscillated by the laser oscillators.
Patent
Method and device for producing a structured surface on a steel embossing roller
TL;DR: In this paper, the surface of a steel embossing roller is constructed by means of short pulse laser, where the structuring is a macrostructuring with dimensions of over 20 μm and depths up to 150 μm.
References
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Patent
Laser beam processing machine
TL;DR: In this paper, a laser beam processing machine comprising a path distribution means for distributing a pulse laser beam oscillated by pulse laserbeam oscillation means to a first path and a second path alternately, and one laser beam that passes through one of the paths and is converged by one condensing lens and the other laser beam is applied at different focusing points which have been displaced from each other in the direction of the optical axis.
Patent
Confocal scanning laser microscope having no moving parts
TL;DR: In this article, a confocal scanning laser microscope has no moving parts and displays real-time video images, where the image of the scanned laser spot on the specimen is focused on the photocathode of an image dissector tube having an electron image deflection that is synchronized and aligned with the laser scan.
Patent
Method of detecting position of mark on substrate, position detection apparatus using this method, and exposure apparatus using this position detection apparatus
TL;DR: In this paper, an object is exposed through a projection optical system with an exposure beam irradiated on a mask, and an illumination system illuminates a mark on the object and a detecting system detects the illuminated mark.
Patent
Three dimensional micro machining with a modulated ultra-short laser pulse
TL;DR: In this paper, a technique and apparatus for micro machining using an ultra short laser pulse in the range of femto second pulsing was disclosed, which is also applicable for smaller or higher pulse rates depending upon the application.
Patent
Method and apparatus for controlling and protecting pulsed high power fiber amplifier systems
Salvatore F. Nati,Otho E. Ulrich,Gyu Choen Cho,Wayne A. Gillis,Donald J Dr Harter,Mark Bendett,Ingmar Hartl +6 more
TL;DR: In this article, an electronic circuit for controlling a laser system consisting of a pulse source and a high power fiber amplifier is presented. But the circuit is used to control the gain of the high-power fiber amplifier system so that the amplified output pulses have predetermined pulse energy as the pulse width and repetition rate of the oscillator are varied.