Light scanner

Abstract

Abstract PURPOSE: To achieve the improvement in transverse external vibration resistance and swing accuracy by bearing the free end part of the revolving shaft mounted with a mirror ana an armature. CONSTITUTION: The free end part of a revolving shaft 14 which is mounted with a mirror 9, an armature 10, is fixed at the fixing part 6 to motor body 1 by means of fixing screw 8 an includes a torsional spring bar 5 is born to the motor body 1 by means of a bearing member 16 such as ball bearing, flexible pivot or the like. Then, when sine wave current is flowed in the coil of the stator 11 of a moving-iron type reversible rotating motor 4, driving torque is generated in the armature 10 and the mirror 9 fixed to the rotating part 7 of the revolving shaft 4 rotates and vibrates to the right and left at a constant vibration amplitude, thus scanning the light beam incident through a window 14. Since both ends of the revolving shaft 4 are supported, the intended object is achieved. The effect will be better if a reinforcing tube 15 is provided COPYRIGHT: (C)1979,JPO&Japio

Inventors

• 👤 Takayuki Shirasaki

Bibliographic Details