Lens unit of imaging assembly

An imaging assembly includes a housing, a lens unit mounted within the housing. The lens unit includes at least one lens positioned along an optical axis and one or more ball bearings attached to the lens unit to enable the lens unit to slidably displace along the optical axis within the housing. A calibration mechanism positioned at one end of the housing for calibrating the at least one lens by positioning the lens unit at an optimal focal position, where the calibration mechanism is rotated to slidably displace the lens unit and to position the lens unit at the optimal focal position, and wherein the optimal focus position is one of a near-field focus position or a far-field focus position. 一种成像组件，其包括壳体、安装在该壳体内的透镜单元。该透镜单元包括沿着光轴定位的至少一个透镜和附接到该透镜单元以使该透镜单元能够在该壳体内沿着该光轴滑动地移位的一个或多个滚珠轴承。定位在壳体的一端的校准机构用于通过将该透镜单元定位在最佳焦点位置处来校准该至少一个透镜，其中使该校准机构旋转以使该透镜单元能够滑动地移位并且将该透镜单元定位在该最佳焦点位置处，并且其中该最佳焦点位置是近场焦点位置或远场焦点位置中的一者。