Industrial Technology Research Institute

Min-Kai Lee

Sung-Ho Liu

Yu-Chung Lin

Shao-Chuan Lu

Jie-Ting Tseng

Chien-Jung Huang

Chun-Ming Chen

Pin-Hao Hu

Ying-Hui Yang

Cheng-Huan Chen

Po-Huan Chou

Mao-Chi Lin

Hsuan-Chang Lee

Hsin-Yu Chang

Fu-Lung Chou

Chieh-Ting Tseng

A cutting method for forming a chamfered corner includes a step of selecting a light pattern-adjusting module according to a pre-cut chamfer angle, a step of the light pattern-adjusting module emitting a laser beam to a substrate and thus forming a modified region extending in a thickness direction at the substrate, a step of the light pattern-adjusting module adjusting an axial energy distribution of a light pattern of the laser beam to vary an appearance of the modified region so as to form the modified region fulfilling the pre-cut chamfer angle, and a step of etching the substrate having the modified region to form a chamfered surface on the substrate by cutting the modified region from the substrate.

Cutting method for forming chamfered corners

A laser cleaning apparatus and a laser cleaning method are furnished, for switching the wavelengths of laser beams furnished by a single laser module using a wavelength switching module and cleaning a test piece using the laser beams having wavelengths and energy suitable for manufacturing needs. The laser cleaning method includes: creating a laser beam; switching the wavelength output by the laser based on process requirements; propagating the laser beam via an optical path propagating module for laser cleaning the test piece; and removing debris. A transfer platform allows movements of the laser beams with respect to the test piece to achieve cleaning of the entire test piece. A control module controls the wavelength switching unit, the laser beam regulating module, and the transfer platform. Total laser cleaning with improved laser cleaning quality is achieved by using these laser beams with the appropriate wavelengths and energy.

Laser cleaning apparatus and laser cleaning method

A laser uniformly machining apparatus and method thereof are provided. The apparatus includes a laser unit, a shaping element, a collimating element, a scaling element and a focusing element. The laser unit provides a laser beam for machining. The shaping element shapes the laser beam into an annular beam. The collimating element modifies the direction of the annular beam in accordance with the direction of an optical axis to turn the annular beam into a collimated annular beam. The scaling element adjusts the collimated annular beam in accordance with a scaling ratio to produce a scaled annular beam. The focusing element focuses the scaled annular beam. The scaled annular beam is produced by the scaling element to form a focused beam having a uniformly distribution of light intensity in the direction of the optical axis.

Laser uniformly machining apparatus and method

A light emitting method includes passing a laser beam through at least one offset assembly and a focusing assembly in sequence, and actuating, by a control-manipulating mechanism, the offset assembly to cause the laser beam to be offset, so that the laser beam can quickly produce a controllable opening of any shape in a drilling process.

Light emitting method and light emitting device

A visual error calibration method configured to calibrate visual positioning errors of a laser processing apparatus is provided. The method includes: providing an alignment mark having at least one alignment point; locating a preset point of the alignment mark at a first preset position of a working area, and locating a preset image point at a preset position of the visible area; locating the alignment point at one of the second preset positions in the working area; adjusting parameters of a scanning module to locate an alignment image point at the preset position; relatively moving the alignment image point to positions of the visible area in sequence; recording the positions of the alignment image point in the visible area, the positions of the alignment point in the working area and the parameters of the scanning module, so as to produce an alignment table.

Visual error calibration method

A beam diffusing module including a light incident terminal, a light emitting terminal, a first reflective plate and a second reflective plate is provided. The first reflective plate and the second reflective plate are disposed on a transmission path of a laser beam. At least one of the first reflective plate and the second reflective plate has a plurality of reflective micorstructures. The reflective micorstructures are arranged along a second direction from the light incident terminal towards the light emitting terminal. At least a part of the laser beam enters the beam diffusing module through the light incident terminal and emerges from the light emitting terminals after being reflected repeatedly by the first reflective plate and the second reflective plate to cause an M squared of the laser beam to be redistributed along a first direction. A beam generating system is also provided.

Beam diffusing module and beam generating system

A programmable laser trigger device and the method for controlling the same are disclosed. The programmable laser trigger device comprises: an external signal module and a command executing module. The external signal module is capable of interfacing the inputs and outputs of waveform command and signals. The command executing module further comprises: a waveform command memory, for storing the waveform command; a waveform command decoder; a waveform generator; and a buffer memory, acting as a waveform trigger parameter buffer between the waveform command decoder and the waveform generator; wherein the waveform command decoder accesses the waveform command stored in the memory for pre-decoding an executing code while generating a sequence of waveform trigger parameters to be stored in the buffer memory, which provides the waveform generator with the sequence of waveform trigger parameters to be transformed into a pulse-width modulation (PWM) pulse train. With the aforesaid device and method, not only unequal pulse outputs can be generated with good flexibility for matching the needs of various manufacturing processes, but also through the instructions to an external feedback signal from the waveform command, the laser pulses outputted therefrom can be modulated in real time in response to the external feedback signal.

Programmable laser device and method for controlling the same

A beam generating apparatus includes a laser light source, a speckle suppressing module, a light homogenizing module and a driving unit. The laser light source outputs a laser beam. The speckle suppressing module includes two biconic lenses and a diffuser. The first biconic lens is disposed on a transmission path of the laser beam. The diffuser is located on the transmission path of the laser beam between the first and second biconic lenses. The light homogenizing module is disposed on the transmission path of the laser beam from the second biconic lens. The driving unit drives the diffuser to move with respect to the laser beam so that the ratio of the Mof the laser beam exiting from the second biconic lens in a first direction to the Mthereof in a second direction is greater than 2, wherein the two directions are substantially perpendicular to each other.

Beam generating apparatus

A laser scanning device includes a laser output unit, a scanner, a light splitting unit, an imaging compensation unit, a detection unit, and a control unit. A scanning focusing unit included in the scanner focuses a laser beam emitted by the laser output unit to scan an object. A visible light beam received by the canning focusing unit is reflected by the light splitting unit and is incident into the imaging compensation unit. Next, the detection unit receives the visible light beam passing through the imaging compensation unit, and outputs a detection signal. The control unit adjusts the detection signal according to the wavelength of the visible light beam, the wavelength of the laser beam, the scanning focusing unit, and the imaging compensation unit. Therefore, the laser scanning device may compensate the aberration and the dispersion caused when the visible light beam passes through the scanning focusing unit.

Laser scanning device

The present invention provides an apparatus and a system for improving depth of focus (DOF), wherein an optical lens for optical processing is actuated to vibrate whereby the DOF of the optical processing is increased due to the variation of focal point. In the embodiment of the present invention, an actuator is coupled to the optical lens for providing vibration energy wherein the optical lens is actuated by the vibration energy so as to vibrate on an optical axis thereof so as to increase the DOF during the optical processing, thereby improving the quality and efficiency of optical processing.

Apparatus and system for improving depth of focus

A laser scanning device and a method using the same are provided. The laser scanning device includes a laser output unit, a shape rotation unit, a scanning unit and a control unit. The laser output unit is used to output a laser beam. The shape rotation unit is disposed on a propagation path of the laser beam for rotating a spot of the laser beam by a predetermined angle. The scanning unit receives the laser beam whose spot has been rotated by the predetermined angle to scan a work piece set on a carrier unit. The control unit is set between the shape rotation unit and the scanning unit for generating the predetermined angle based on a scanning position of the scanning unit.

Laser scanning device and method using the same

A calibration strip and a laser calibration system using thereof are disclosed. The calibration strip is comprised of: a substrate; and a light impermissible layer, having a calibration pattern formed thereon while being formed on the substrate. The light impermissible layer is an opaque layer, being formed on the surface of the substrate by coating, electroplating or adhering. The substrate, manufactured by the principle for enabling the color or brightness of the substrate to have high contrast comparing with those of the light impermissible layer, can be a structure of a layer of transparent material and a light source; a layer of transparent material and a backlight source; or a metal film having a reflective layer formed thereon. Since, in the laser calibration system, the calibration strip with the calibration pattern is imaged by an imaging device and then the captured image is send to a processing unit where it is analyzed, the time-consuming and inaccurate off-line manual calibration is no longer required and the laser calibration system can be adapted for various lasers regardless of their spectra.

Growing community of inventors

Tainan County, Taiwan

Min-Kai Lee