| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem wherein image deviation occurs in such an electronic imaging apparatus that performs image composition in post-process because optical axes deviation of a solid-state imaging device, the optical axis deviation of which is caused by fluctuation of atmospheric air, the solid-state imaging device, the optical axis deviation of which is caused by expansion difference of lenses and respective image pickup optical systems becomes large, when plastic lenses are used as image forming lenses of the image pickup optical systems. SOLUTION: The image pickup optical system is provided with a plurality of arranged image forming lenses and a transmittance distribution type filter disposed around the pupil position of the image forming lenses, and a lens array in which the plurality of arranged image forming lenses form a plurality of convex lens elements on one glass substrate. The coefficient of thermal expansion of the glass substrate ranges between 40 and 75 (×10<SP>-7</SP>/°C). At least convex lens element parts of the lens array are desirably made of epoxy or acrylic resin. The electronic imaging apparatus is provided with the image pickup optical system, the solid-state electronic imaging device, and an image compositing means for combining a plurality of images obtained by the optical imaging system. COPYRIGHT: (C)2003,JPO
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