Abstract: An embodiment disclosed bevel-axial auto-focusing method for a microscopic system, including: capturing full-frame bevel-axial input image; using image analysis to read image information and transmitting grayscale information to a statistic analysis module; the statistic module extracting image statistic characteristics and performing curve fitting with probability function; and estimating the optimal focus point based on the post-fitting characteristic parameters. A preferred embodiment combines image with Gaussian curve fitting and Kalman filter, and analyzes the in-focus position based on image quality so as to directly determine the optimal rectification value of the in-focus position on the object surface. The method can improve the accuracy and speed of auto-focusing.

Abstract: A laser output apparatus is disclosed. The laser output apparatus includes a laser source providing a first laser light; a first attenuation element attenuating the first laser light to be a second laser light having a polarization direction and an energy; a polarization changing element changing the polarization direction; and a second attenuation element decreasing the energy.

Abstract: An active antenna module is disclosed. The active antenna module comprises a loop antenna, a RF transistor, a LR series circuit, a first bypass capacitor and a second bypass capacitor. The RF transistor comprises a control port, a first port, and a second port. Each of two ends of the loop antenna is electrically connected to one of the control port and the second port, and the control port and the second port are out of phase. The second port is electrically connected to the first port via the first bypass capacitor. The first port is electrically connected to ground via the LR series circuit. The second bypass capacitor and a resistor of the LR series circuit are connected in parallel.