Abstract: A laser automatic compensation control device includes a controller, a digital array, a decoder, a compensation array and a synchronizer. The controller is configured for receiving a number of laser energy signals and comparing each laser energy signal with a corresponding preset energy value to obtain a corresponding output digital signal. The digital array is electrically connected to the controller and configured for storing the output digital signals. The decoder is electrically connected to the digital array and configured for converting the output digital signals into a number of analog compensation signals. The compensation array is electrically connected to the decoder and configured for storing the analog compensation signals. The synchronizer is electrically connected to the compensation array and configured for receiving the analog compensation signals, and synchronously outputting the analog compensation signals to a laser diode array.

Abstract: A laser inspection system is provided. A laser source emits a laser with a first spectrum and the laser is transmitted by a first optical fiber. A gain optical fiber doped with special ions is connected to the first optical fiber, and a light detector is provided around the gain optical fiber. When the laser with the first spectrum passes through the gain optical fiber, the gain optical fiber absorbs part of the energy level of the laser with the first spectrum, so that the laser with the first spectrum is converted to generate light with a second spectrum based on the frequency conversion phenomenon. The light detector detects the intensity of the light with the second spectrum, so that the power of the laser source can be obtained.

Abstract: A laser inspection system is provided. A laser source emits a laser with a first spectrum and the laser is transmitted by a first optical fiber. A gain optical fiber doped with special ions is connected to the first optical fiber, and a light detector is provided around the gain optical fiber. When the laser with the first spectrum passes through the gain optical fiber, the gain optical fiber absorbs part of the energy level of the laser with the first spectrum, so that the laser with the first spectrum is converted to generate light with a second spectrum based on the frequency conversion phenomenon. The light detector detects the intensity of the light with the second spectrum, so that the power of the laser source can be obtained.

Abstract: A laser protection system includes a high-power laser source, an optical diffuser, a photo detector, a signal-processing device, and a control module. The high-power laser source generates a first laser light beam, and the optical diffuser attenuates a laser power of the first laser light beam to form a second laser light beam. The photo detector obtains an optical detection signal from the second laser light beam. The signal-processing device includes a signal conversion module, a processor, and an encoder. The signal conversion module transforms the optical detection signal into a measurement data eigenvalue. The encoder encodes the measurement data eigenvalue into a measured encoded data, and the setting data eigenvalue into a set encoded data. The control module evaluates the set encoded data and the measured encoded data to determine whether or not the high-power laser source needs to be stopped.

Abstract: A power-measuring protection method includes the steps of: applying an optical diffuser to attenuate a first laser light beam to form a second laser light beam; applying a photo detector to detect the second laser light beam to obtain an optical detection signal; applying a signal conversion module to transform the optical detection signal into a measurement data eigenvalue; applying a processor to receive the measurement and setting data eigenvalues, and to further transmit these data eigenvalues to an encoder; applying the encoder to encode the measurement data eigenvalue and the setting data eigenvalue, and then to transmit a corresponding measured encoded data and a corresponding set encoded data, respectively, to a control module; and, applying the control module to evaluate the set and measured encoded data to determine whether or not the high-power laser source needs to be stopped. In addition, a laser processing system is also provided.

Abstract: A laser driver device is provided, which includes a control circuit, a driver circuit and a feedback circuit. The control circuit receives setup data and convert the setup data into a setup signal. The driver circuit receives the setup signal and generates a drive current according to the setup signal to drive a laser light source. The feedback circuit receives the setup data and the feedback signal of the laser light source and compares the setup data with the feedback signal to generate an adjust signal. The driver circuit receives the adjust signal and adjusts the drive current according to the adjust signal.

Abstract: A laser driver device is provided, which includes a control circuit, a driver circuit and a feedback circuit. The control circuit receives setup data and convert the setup data into a setup signal. The driver circuit receives the setup signal and generates a drive current according to the setup signal to drive a laser light source. The feedback circuit receives the setup data and the feedback signal of the laser light source and compares the setup data with the feedback signal to generate an adjust signal. The driver circuit receives the adjust signal and adjusts the drive current according to the adjust signal.

Abstract: A control method of speeding up light emission of a laser diode includes the following steps. First step is to boost the supply voltage from a first voltage potential to a second voltage potential before an emission period. At the beginning of the emission period, a current path conducts through the laser diode and a current source. One terminal of the laser diode is coupled to the current source, and the other terminal of the laser diode connects the supply voltage. When the current path is being conducted, the current source is in the transient state and provides a transient driving current; and the voltage difference between the two terminals of the laser diode is generated in response to the second voltage potential and is related to the transient driving current. When the transient driving current is larger than a threshold, the laser diode emits light.

Abstract: The system for stabilizing wavelength of LED (light emitting diode) radiation in backlight module of the LCD (liquid crystal display) comprises two photodiodes, a plurality of LEDs, a microprocessor unit (MCU) and a driver circuit, wherein two photodiodes have different photo sensitivities in response different wavelengths. A target value, associated with a ration of photo sensitivities of the two photodiodes under two different wavelength radiations, is stored to the MCU as a referred value. Thus, another wavelength (or wavelength variation) of LED radiation is derived by comparing another target value with the referred value. The MCU determines a correction constant based on a color match function of the derived wavelength, and outputs a compensation signal to compensate LED, wherein the compensation signal is equal to multiplication of the correction constant and an original light intensity compensation signal for compensating light intensity loss of the LED.

Abstract: The system for stabilizing wavelength of LED (light emitting diode) radiation in backlight module of the LCD (liquid crystal display) comprises two photodiodes, a plurality of LEDs, a microprocessor unit (MCU) and a driver circuit, wherein two photodiodes have different photo sensitivities in response different wavelengths. A target value, associated with a ration of photo sensitivities of the two photodiodes under two different wavelength radiations, is stored to the MCU as a referred value. Thus, another wavelength (or wavelength variation) of LED radiation is derived by comparing another target value with the referred value. The MCU determines a correction constant based on a colour match function of the derived wavelength, and outputs a compensation signal to compensate LED, wherein the compensation signal is equal to multiplication of the correction constant and an original light intensity compensation signal for compensating light intensity loss of the LED.