| 摘要 |
PURPOSE:To improve a holding force of an optical unit and a supporting unit, to prevent the optical unit from being rocked by a vibration, and to prevent a deflection of an image, by providing a magnetic material and a magnet on the optical unit and the supporting unit. CONSTITUTION:An optical unit 61 is inserted from the upper part of a supporting unit 62, and the optical unit 61 is inserted so that a magnet 67 of this optical unit 61 an a sheet metal 74 of the supporting unit 62 contact each other. Also, focusing of this lens unit 7 is executed by rotating a lens part 70 of the supporting unit 62, and moving up and down the lens part 70 on a holder 71 by using a screw part 72. In such a case, a rotation of the optical unit 61 can be prevented by a groove 69 and a projecting part 68. Also, the optical unit 61 can be separated from the supporting unit 62 by raising it upward. By providing the magnet 67, and the sheet metal 74 being a magnetic material, on the bottom part of this optical unit, and the inside of the supporting unit 62, respectively, a holding force of the optical unit 61 and the supporting unit 62 is improved.
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