| 摘要 |
<p>A high-frequency superposition module for an optical pickup that reduces the number of devices, facilitates scale-down and allows an oscillating circuit to be turned off when a power supply for feeding a direct current to a laser diode is turned off and an optical pickup using the high-frequency superposition module. An oscillating circuit (12) for feeding a high frequency to a laser diode (1) comprises at least an active element and passive elements such as capacitors, resistors, and inductors. A power supply (13) for feeding a direct current to the laser diode is also used as a power supply for the oscillating circuit.</p> |
