| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the problem that if a lens is miniaturized to be integrated with a light source and a photo detector, the lens or other optical parts have to be made small, and handling for assembling and adjustment becomes remarkably difficult. <P>SOLUTION: An optical head comprises; a first substrate 109 having a lens 108 which condenses light on an information recording medium; a second substrate 101 having detectors 102 and 103 on its surface; and a layer 107 having a prism and a mirror 105 between the first and the second substrates, and in this layer, there is formed a cavity 106 in which a light source 104 is prepared. These lens, mirror, prism, light source, and photodetector are all arranged on a wafer adjusted by an alignment mark and formed. Thereby, adjustment is easy and it is not necessary to adjust small components by handling. The manufacturing of super small optical heads at low cost in a large quantity and at high precision becomes possible. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
