PURPOSE: A check zoom-hand piece is provided to control the output from laser beam of a hand piece through a hall sensor, thereby the sensor and a target are not touched each other, a durability degradation due to abrasion, and a performance degradation are not caused, and reducing output changes due to temperature. CONSTITUTION: A check zoom-hand piece (40) using a hall sensor comprises: an adaptor (41) bonding the hand piece with the end of an articulator arm； a cylindrical cover (42) bonded with the outer periphery of the adaptor, and connected with a non-contacting sensor inside； a cylindrical handle (43) capable of rotating by being formed with a barcode (431), and comprising in a way that one side of periphery is inserted into the cover； a cylindrical spiral guide (44) formed with a spiral groove (441) by being extended toward the other side of the handle and bonding with the handle in one body； a linear guide (45) formed with a straight groove (451), and comprising in a cylindrical shape to be inserted into the handle and the spiral guide； a lens holder (46) inserted into the linear guide, and moving forward and backward according to the longitudinal direction of the linear guide； a guide housing (47) whose one end is touched on one end of the handle to surround the outer periphery of the linear and spiral guides； and an extension part (48) whose one end is touched on the other end of the guide housing, and the other end is bonded with a tip (49) which contacts an affected part.본 발명은 핸드피스에 관한 것으로, 보다 상세하게는 의료용 레이저 장치에 사용되는 아티큘레이터 암의 마지막 관절부에 장착되는 핸드피스에 있어서, 조사되는 레이저 빔의 출력을 조절하는 체크 줌 핸드피스 내부에 가변 저항기를 사용하지 않고 자기장을 감지하는 트랜지스터인 홀센서(hall sensor)를 사용하여, 자기장의 세기나 분포를 측정함으로써 각 단계의 신호를 보다 원활하게 전송하고 사용자가 필요로 하는 각 단계별로 레이저 빔의 사이즈를 쉽고 정확하게 조절하도록 하는 홀센서를 이용한 체크 줌 핸드피스에 관한 것이다.
