| 摘要 |
PURPOSE:To move the image forming point of an image extremely finely and to increase the resolution substantially by arranging a transparent plate on the optical axis of a lens for forming the image on an image pickup element, and varying the angle of the transparent plate to the optical axis of the lens periodically. CONSTITUTION:The transparent plate 14 is supported so that it can rotates around a shaft 15 as a fulcrum to right and left in a figure. A couple of electromagnets 16 are coupled magnetically with a magnetic plate 17 fitted to the lower end of the transparent plate 14. A driving circuit 18 drives the electromagnets 16 synchronously with the read scanning operation of the solid-state image pickup element 12 and the transparent plate 14 rotates and oscillates synchronouly with the read scanning operation. This rotary oscillation varies the angle of the transparent plate 14 to the optical axis of the lens 13 synchronously with the read scanning operation and the image forming degree of the image on the solid- state image pickup element 12 moves periodically by a 1/2 picture element pitch. Consequently, an original image can be read with resolution twice as high as the resolution of the solid-state image pickup element 12.
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