| 摘要 |
An imaging unit (30) is provided with: fixing frames (34, 36, 40, 41) for retaining objective lenses (33, 35); a moving frame (38) in which moving lenses are provided so as to be able to move in a first direction (F) and a second direction (B) along an imaging optical axis (O); an urging member (52) for urging the moving frame (38) in the second direction (B); an actuator (60) having a contacting member (63) for advancing and retreating by pushing and pulling of a drive wire (64), the contacting member (63) being provided to the moving frame (38) so as to be able to separate therefrom, and the actuator (60) moving in the first direction (F) and causing the moving frame (38) to move in the first direction; and a guide member (61) through which the contacting member (63) is inserted and rectilinearly guided; the contacting member (63) having an outside diameter (d2) smaller than the hole diameter (d1) of the guide member (61) along the entire length of the contacting member (63) in the advancing/retreating direction thereof. |
