MONOLITHIC OPTICAL HEAD

摘要

A monolithic optical head (200) facilitates reading and writing optical data on an optical recording medium. The optical head (200) includes a monolithic substrate (210) formed of an optically transparent material. The substrate (210) has a first side (212) and a second flat side (216) opposing the first side (212). The first side (212) includes a central region that has a curved surface (220) to produce a lensing effect, and a peripheral region (201). The second flat side (216) has a central portion opposing the curved surface to couple radiation from and to the curved surface through the substrate. The second flat side (216) also has a peripheral portion opposing the peripheral region of the first side (212).