Abstract: A method for making lens modules includes the steps of: a) providing a wafer including an array of sensor chips; b) mounting a plurality of lens assemblies on the sensor chips, respectively, thereby defining a plurality of intersecting spacing grooves among the lens assemblies; c) forming substrate layer by filling in the spacing grooves with a resin material; and d) cutting the wafer and the substrate layer along intersecting cutting lines each extending along one of the spacing grooves and each intervening the lens assemblies, the substrate layer being divided into a plurality of barrels respectively surrounding the lens assemblies. A lens module made by the method is also disclosed.

Abstract: A power converter includes: a transformer controlled by a main switch to receive an input power according to a driving signal; a switching circuit outputting a sync signal; and a driving circuit including a dead time controller that includes first and second switches operating according to the sync signal, and an inverse phase generator that includes third and fourth switches and that generates a switching signal. A circuit switch of the switching circuit operates according to the switching signal. Transition of the driving signal from high to low causes the switching signal to transition from low to high with a dead time between a falling edge of the sync signal and a rising edge of the switching signal. Transition of the driving signal from low to high causes the switching signal to transition from high to low with a dead time between a falling edge of the switching signal and a rising edge of the sync signal.

Abstract: A phase rotary disk motor switching module employs anchor notches located on the peripheral rim of a rotary disk mounted on a motor to couple with a retaining element to enable the rotary disk to rotate in only one direction and define a plurality of phases for the rotary disk. Every phase has a driven gear coupled with the motor for transmitting output power. Motor power may be switched to a plurality of phases of output positions to maximize utilization of a single motor.