Optical-position adjusting device for optical unit

摘要

An optical-position adjusting device for an optical unit comprises a movement-conversion mechanism that converts a rotational movement of a rotary wheel cylinder into a linear movement of a lens barrel, and an optical-position adjusting mechanism that positions the lens barrel with respect to the rotary wheel cylinder. The optical-position adjusting mechanism has a ring and a fixing member. The ring is fit on the lens barrel in such a manner that the lens barrel can be moved along the central axis thereof. The ring is non-rotatable relative to the lens barrel. The fixing member is provided for fixing the ring to a frame in such a manner that the ring can be released from the frame.