Patent application number | Description | Published |
20100000978 | LASER MACHINING DEVICE AND LASER MACHINING METHOD - A laser machining device is provided with a laser light source, a spatial light modulator, a driving unit, a control unit, and a condensing optical system. The control unit selects a basic hologram corresponding to each basic machining pattern included in a whole machining pattern in a workpiece from a plurality of basic holograms stored by the storage unit, and determines a display region of the basic hologram in the spatial light modulator so that the deviation of the value of “Iη/n” becomes small for the selected respective basic hologram when the intensity of a laser beam input to a display region of the basic hologram in the spatial light modulator is defined as I, the diffraction efficiency of the laser beam in the basic hologram is defined as η, and the number of condensing points in a basic machining pattern corresponding to the basic hologram is defined as n. | 01-07-2010 |
20100026620 | LCOS SPATIAL LIGHT MODULATOR - The display area selection circuit selects a desired display area. The signal generating circuit sets a period of each shift signal generated while the selection position of the pixel diode is between the shift start position and the display start position shorter than a period of each shift signal generated while the selection position of the pixel diode is between the display start position and the display end position. | 02-04-2010 |
20100079832 | LASER PROCESSING APPARATUS AND LASER PROCESSING METHOD - A laser processing apparatus 1 includes a laser light source | 04-01-2010 |
20120196427 | LASER WORKING METHOD, LASER WORKING APPARATUS, AND ITS MANUFACTURING METHOD - An object is irradiated with a laser light modulated by a reflection type spatial light modulator such that aberration of the laser light converged inside the object becomes a predetermined aberration or less. Therefore, aberration of the laser light generated at a position on which a converging point of the laser light is located is made as small as possible, to enhance the energy density of the laser light at that position, which makes it possible to form a modified region with a high function as a starting point for cutting. In addition, because the reflection type spatial light modulator is used, it is possible to improve the utilization efficiency of the laser light as compared with a transmissive type spatial light modulator. | 08-02-2012 |
20120234808 | LASER PROCESSING METHOD - Laser lights L | 09-20-2012 |
20130068742 | LASER MACHINING DEVICE AND LASER MACHINING METHOD - A laser machining device | 03-21-2013 |
20130242373 | LIGHT CONTROL DEVICE AND LIGHT CONTROL METHOD - A light control device | 09-19-2013 |
20130341308 | ABERRATION-CORRECTING METHOD, LASER PROCESSING METHOD USING SAID ABERRATION-CORRECTING METHOD, LASER IRRADIATION METHOD USING SAID ABERRATION-CORRECTION METHOD, ABERRATION-CORRECTION DEVICE AND ABERRATION-CORRECTING PROGRAM - In an aberration-correcting method according to an embodiment of the present invention, in an aberration-correcting method for a laser irradiation device | 12-26-2013 |
20140036182 | PHASE MODULATING APPARATUS AND PHASE MODULATING METHOD - The present invention relates to a phase modulating apparatus capable of highly accurately and easily correcting the phase modulation characteristic of a reflective electric address spatial light modulator even when a condition of input light is changed. In the LCOS phase modulating apparatus, an input unit inputs the condition of the input light, and a processing unit sets an input value for each pixel. A correction value deriving unit determines a correction condition according to the condition of the input light. A control input value converting unit converts the input value set for each pixel into a corrected input value based on the correction condition. An LUT processing unit converts the corrected input value into a voltage value, and drives each pixel by using a drive voltage equivalent to the converted voltage value. | 02-06-2014 |
20140232766 | APPARATUS CONVERTING INPUT VALUE TO CONTROL VALUE, DRIVING PIXEL BASED ON CONTROL VALUE, AND MODULATING LIGHT - In an apparatus for modulating light, an spatial light modulator includes a plurality of pixels and configured to modulate input light in response to a drive voltage for each of the pixels. An input value setting unit is configured to set an input value for the each of pixels. The input value is a digital value, an entire gray level of the digital value is “N”, and “N” is a natural number. A converting unit is configured to convert the input value to a control value. A control value is a digital value, an entire gray level of the control value is “M”, and “M” is a natural number greater than “N”. A driving unit is configured to convert the control value to a voltage value and drive the each of the pixels in response to the drive voltage corresponding to the voltage value. | 08-21-2014 |
20140293388 | LIGHT MODULATION CONTROL METHOD, CONTROL PROGRAM, CONTROL DEVICE AND LASER BEAM IRRADIATION DEVICE - In the control of light condensing irradiation of laser light using a spatial light modulator, the number of wavelengths, a value of each wavelength, and incident conditions of the laser light are acquired, the number of light condensing points, and a light condensing position, a wavelength, and a light condensing intensity on each light condensing point are set, and a distortion phase pattern provided in an optical system including the spatial light modulator to the laser light is derived. Then, a modulation pattern presented in the spatial light modulator is designed in consideration of the distortion phase pattern. Further, in the design of a modulation pattern, a design method focusing on an effect by a phase value of one pixel is used, and when evaluating a light condensing state, a propagation function to which a distortion phase pattern is added is used. | 10-02-2014 |
20140307299 | LIGHT MODULATION CONTROL METHOD, CONTROL PROGRAM, CONTROL DEVICE AND LASER BEAM IRRADIATION DEVICE - In the control of light condensing irradiation of laser light using a spatial light modulator, the number of wavelengths, a value of each wavelength, and incident conditions of the laser light are acquired, the number of light condensing points, and a light condensing position, a wavelength, and a light condensing intensity on each light condensing point are set, and a light condensing control pattern is set for each light condensing point. Then, a modulation pattern presented in the spatial light modulator is designed in consideration of the light condensing control pattern. Further, in the design of a modulation pattern, a design method focusing on an effect by a phase value of one pixel is used, and when evaluating a light condensing state, a propagation function to which a phase pattern opposite to the light condensing control pattern is added is used. | 10-16-2014 |
20150049376 | BEAM-SHAPING DEVICE - A beam shaping device includes a first phase modulation unit including a phase-modulation type SLM, and displaying a first phase pattern for modulating a phase of input light, a second phase modulation unit including a phase-modulation type SLM, being optically coupled to the first phase modulation unit, and displaying a second phase pattern for further modulating a phase of light phase-modulated by the first phase modulation unit, and a control unit providing the first and second phase patterns to the first and second phase modulation units, respectively. The first and second phase patterns are phase patterns for approximating an intensity distribution and a phase distribution of light output from the second phase modulation unit, to predetermined distributions. | 02-19-2015 |
20150085373 | ZOOM LENS - A zoom lens includes a first lens unit including one of an SLM or a VFL, a second lens unit being optically coupled between the first lens unit and a focal plane and including one of an SLM or a VFL, and a control unit controlling focal lengths of the first and second lens units. A distance between the first lens unit and the second lens unit and a distance between the second lens unit and the focal plane are invariable. The control unit changes a magnification ratio of the zoom lens by changing the focal lengths of the first and second lens units. | 03-26-2015 |