Abstract: A bonding apparatus such as an ultrasonic transducer is provided that comprises an oscillation amplification device having a longitudinal axis and a substantially triangular cross-sectional area on a plane that is orthogonal to the longitudinal axis. An ultrasonic driver is coupled to the oscillation amplification device at a first position along the longitudinal axis and a bonding tool is mounted to the oscillation amplification device at a second position along the longitudinal axis spaced from the first position.

Abstract: The present invention is a light detecting device with compensation capacity. The light detecting device includes a light detector, a converter, a compensation circuit, a subtraction circuit, and an amplifier. The light detector can sense ambient light, generate a current signal indicative of the ambient light, and deliver the current signal to the converter. The converter can transform the current signal into a first voltage signal. The compensation circuit includes a shielded photodiode and a resistor and generates a suitable second voltage signal. The subtraction circuit can subtract the second voltage signal from the first voltage signal and produce a current signal that is solely dependent on the ambient light. The amplifier can amplify the current signal and produce a larger current signal to external loads.