| 摘要 |
An optical device includes, from front to rear, a first lens unit arranged to produce an over-corrected lateral chromatic aberration and/or distortion, a variable vertical angle prism unit, and a second lens unit arranged to produce an under-corrected lateral chromatic aberration and/or distortion, wherein the aberrations produced when varying the vertical angle of the prism unit to stabilize an image are corrected well.
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