<p>An optical disk player provided with tilt servo unit. A quadrant type photodetector (5) is used as disk tilt detecting means, and the push-pull output is issued as a disk tilt detecting signal. By simultaneous use of the photodetector (5) of the pickup (P), there is no need to use special-purpose tilt sensor, and this contributes to compact design of the pickup (P) and to the reduction of manufacturing cost <IMAGE></p>
