A manufacturing method for a printed circuit board includes: passing a first laser beam output from a laser output device through a first aperture so as to define an outer diameter of the first laser beam, positioning the first laser beam by an optical axis positioning device including a galvano device and an fθ lens, and irradiating the printed circuit board with the first laser beam such that a through-hole is formed in a copper layer; and passing a second laser beam output from the laser output device through a second aperture so as to define an outer diameter of the second laser beam whereby a diameter of the second aperture is smaller than a diameter of the first aperture, positioning the second laser beam by the optical axis positioning device, and irradiating the printed circuit board with the second laser beam such that an insulating layer is processed.

A manufacturing method for a printed circuit board includes: passing a first laser beam output from a laser output device through a first aperture so as to define an outer diameter of the first laser beam, positioning the first laser beam by an optical axis positioning device including a galvano device and an fθ lens, and irradiating the printed circuit board with the first laser beam such that a through-hole is formed in a copper layer; and passing a second laser beam output from the laser output device through a second aperture so as to define an outer diameter of the second laser beam whereby a diameter of the second aperture is smaller than a diameter of the first aperture, positioning the second laser beam by the optical axis positioning device, and irradiating the printed circuit board with the second laser beam such that an insulating layer is processed.

A laser light irradiation device includes: a laser light source; a spatial light modulator including a display unit configured to display a phase pattern; an objective lens configured to condense a laser light emitted from the spatial light modulator at the object; an image-transfer optical system configured to transfer an image of the laser light on the display unit to an entrance pupil plane of the objective lens; a reflected light detector configured to detect reflected light of the laser light which is incident in the object and reflected by an opposite surface opposite to a laser light entrance surface; and a controller configured to control the phase pattern. When the reflected light detector detects the reflected light, the controller displays a reflected light aberration correction pattern which is the phase pattern correcting aberration generated in the event of the laser light being transmitted through the object having twice the predetermined thickness.

A laser light irradiation device includes: a laser light source; a spatial light modulator including a display unit configured to display a phase pattern; an objective lens configured to condense a laser light emitted from the spatial light modulator at the object; an image-transfer optical system configured to transfer an image of the laser light on the display unit to an entrance pupil plane of the objective lens; a reflected light detector configured to detect reflected light of the laser light which is incident in the object and reflected by an opposite surface opposite to a laser light entrance surface; and a controller configured to control the phase pattern. When the reflected light detector detects the reflected light, the controller displays a reflected light aberration correction pattern which is the phase pattern correcting aberration generated in the event of the laser light being transmitted through the object having twice the predetermined thickness.

An irradiation device for an additively manufacturing apparatus may include a working beam generation device configured to provide a working beam, a modulation beam generation device configured to provide a modulation beam, and a solid-state optical modulator that includes a crystalline material that exhibits a change in refractive index in response to photoexcitation of free electrons within the crystalline material. The irradiation device may include a power source coupled to the solid-state optical modulator and configured to introduce free electrons into the crystalline material. The modulation beam may cause photoexcitation of the free electrons within the crystalline material. The photoexcitation of the free electrons within the crystalline material may cause the crystalline material to exhibit a change in refractive index. The working beam, when incident upon the crystalline material, may exhibit a change in one or more parameters, such as a phase shift, attributable at least in part to the change in refractive index exhibited by the crystalline material.

A processing device to form a pattern on a surface of an object to be processed using diffraction of a laser beam emitted from a laser source, the device including: a main body providing a space to process the object using the laser beam emitted from the laser source; a laser transmission unit formed at a first portion of the main body, and configured to diffract the laser beam so that a diffracted laser beam is emitted toward the object; an actuator formed at a second portion of the main body, and connected to the laser transmission unit so as to change an emission pattern of the diffracted laser beam while rotating the laser transmission unit vertically/horizontally or in a set radius; and a controller provided at a third portion of the main body, and connected to the actuator to control an operation of the actuator.

A processing device to form a pattern on a surface of an object to be processed using diffraction of a laser beam emitted from a laser source, the device including: a main body providing a space to process the object using the laser beam emitted from the laser source; a laser transmission unit formed at a first portion of the main body, and configured to diffract the laser beam so that a diffracted laser beam is emitted toward the object; an actuator formed at a second portion of the main body, and connected to the laser transmission unit so as to change an emission pattern of the diffracted laser beam while rotating the laser transmission unit vertically/horizontally or in a set radius; and a controller provided at a third portion of the main body, and connected to the actuator to control an operation of the actuator.

A laser light irradiation device includes: a laser light source; a spatial light modulator including a display unit, the spatial light modulator modulating the laser light in accordance with a phase pattern displayed on the display unit; a beam diameter conversion mechanism arranged on an optical path of the laser light between the laser light source and the spatial light modulator, the beam diameter conversion mechanism enlarging or reducing the beam diameter of the laser light; a lens insertion and removal mechanism including a lens configured to vary the beam diameter of the laser light, the lens insertion and removal mechanism being enabled to insert/remove the lens in/from the optical path; and a controller configured to control the phase pattern to be displayed. The controller displays the phase pattern configured to correct a wavefront aberration caused by insertion or removal of the lens.

A laser light irradiation device includes: a laser light source; a spatial light modulator including a display unit, the spatial light modulator modulating the laser light in accordance with a phase pattern displayed on the display unit; a beam diameter conversion mechanism arranged on an optical path of the laser light between the laser light source and the spatial light modulator, the beam diameter conversion mechanism enlarging or reducing the beam diameter of the laser light; a lens insertion and removal mechanism including a lens configured to vary the beam diameter of the laser light, the lens insertion and removal mechanism being enabled to insert/remove the lens in/from the optical path; and a controller configured to control the phase pattern to be displayed. The controller displays the phase pattern configured to correct a wavefront aberration caused by insertion or removal of the lens.

A visible light laser system and operation for welding materials together. A blue laser system that forms essentially perfect welds for copper based materials. A blue laser system and operation for welding conductive elements, and in particular thin conductive elements, together for use in energy storage devices, such as battery packs.