| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a pickup for a hologram recording medium in which the number of components can be reduced by integrating a light source and angle adjusting mechanisms. <P>SOLUTION: When a prescribed voltage is applied to the angle adjusting mechanisms 52a, 52b, distortion deformation occurs respectively in the piezoelectric elements constituting the angle adjusting mechanisms 52a, 52b and therefore, the attitude of a movable base 53 is brought down toward the figure 1α with the angle adjusting mechanism 52a as a fulcrum and then, the angle of inclination of the optical axis O-O of reference light Br can be changed. Consequently, the reference light is eventually diffracted by data (interference fringe) to form the page corresponding to the angle of inclination after the change and the reproduction is performed by acquiring the diffracted light output from the recording medium 1 by an imaging means 57. Since the light source 54 and the angle adjusting mechanisms 52a, 52b can be integrally provided, the realization of the reduction of the number of components and space saving is made possible. <P>COPYRIGHT: (C)2007,JPO&INPIT |
