| 摘要 |
PURPOSE:To prevent resonance from generating, by having the first supporting means including a link mechanism, and the second supporting means including a pivot shaft, and providing the holding body of the second supporting means between a means having an optical system, and a bearing holding body consisting of the link mechanism. CONSTITUTION:A holding body to hold the pivot shaft is provided between the means to hold the optical system, and the bearing holding body consisting of the link mechanism. For example, since pivot shafts 61a and 61b, and a set of pivot bearing are joined directly to a bearing holding body 67, the length lof a device from the end part of a base board 52a to that of a base board 52b can be shortened, thereby, the device can be constituted compactly. Also, so that an objective lens holding body 76 is supported through pivot bearings 78a and 78b, no play of the objective lens holding body 76 in a horizontal direction is generated at the time of automatic focusing. In such a way, no resonance is generated at the driving time of the optical system, and an operation is performed well, and also, the device can be miniaturized.
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