| 摘要 |
The image acquisition unit (1) comprises: a housing (3) with a handgrip (3A, 3B) to be gripped and supported by hand; inside the housing, at least one image detection system (59, 25) and at least one focusing device for the image detection system, that can be operated from the outside of said housing. The image detection system comprises an objective lens (25), fixed with respect to the housing (3), and a support (55), movable with respect to the objective lens (25), mounted on which is a sensor (5) for detecting the images focused by the objective lens. The focusing device comprises a ring (41; 43) that can be adjusted from the outside of the housing (3) placed in a position to allow adjustment with the thumb of the hand with which the unit is gripped. A mechanical connection member (69, 67, 73, 75) between the ring (41; 43) and the moving support (55) transforms the rotational movement of the ring into a translational and focusing movement of the support with respect to the fixed objective lens. |
