| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical apparatus configured to prevent a vibration, by shifting a lens or an imaging device, wherein an aberration increase in an optical system is prevented, irrespective of the increase in the shift amount. SOLUTION: Three spherical bodies 14a are sandwiched at three positions between a shift base 8 and a shift frame 9. Each of the spherical bodies 14a comes into contact with the contact surface 8a of the shift base 8 or the contact surface 9a of the shift frame 9. The contact surfaces in the three positions are coaxially spherical with respect to a point O on the optical axis of the optical system. Provided that the radius of the contact surface 8a centered about the point O is defined as R1, a radius of the contact surface 9a centered about the point O is denoted as R2, the diameter of the spherical body 14a is R2-R1. Additionally, the center of the radius R3 approximating to the spherical aberration of a photographic lens substantially aligns with a center between the radius R1 and the radius R2. The imaging device 11 moves on the spherical surface centering the center of the radius R1, then moves near the radius R3 approximating the spherical aberrations, then, upon moving, the imaging device moves near the spherical aberrations, accordingly, the influence of spherical aberrations can be reduced, and deteriorations in the photographed image can be reduced. COPYRIGHT: (C)2011,JPO&INPIT
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