| 摘要 |
An image pick-up apparatus including a laser light source for emitting a laser beam, an acoustic-optical element for deflecting the laser beam in a main-scanning direction at a horizontal scanning frequency, a vibrating mirror for deflecting the laser beam deflected in the main-scanning direction in a sub-scanning direction perpendicular to the main-scanning direction at a vertical scanning frequency, an objective lens for projecting the laser beam deflected two-dimensionally onto a specimen as a fine spot, collecting a light flux reflected by the specimen, and directing the collected light flux onto the vibrating mirror, and a linear image sensor for receiving the light beam reflected by the vibrating mirror and having a number of photoelectric converting elements aligned linearly in the main-scanning direction. The linear image sensor is readout at the horizontal scanning frequency to derive an image signal.
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