Tested and verified in practical optical pickuphead, this lens canful fill the requirement of digital versatile disk pickup systems.
经过实际应用，证明这种结构完全能够满足高密度光盘光学头的技术要求。
2
Studying the theory of optical pickuphead unit (OPU) and how to pickup the signal on the disk. Based on these theories, it analyse the structure of the focusing and tracking device.
研究光学拾取头的基本原理和光盘信号拾取原理，简要分析了实际的光学头聚焦伺服和循迹伺服的机械结构。
3
Several times a year, the couple would load their cameras into the pickup and head for mustang country.