| 摘要 |
<p>An optical scanning device ( 1 ) to scan an optical beam over a surface (S). The optical scanning device ( 1 ) uses a piezoelectric actuator ( 10 ) acting on a platform ( 2 ) that carries a mirror ( 4 ) to pivot the platform ( 2 ) about a pivot ( 8 ). Voltage is applied to the piezoelectric actuator ( 10 ) to pivot the platform ( 2 ) about the pivot ( 8 ). Changes in the applied voltage result in the angle at which the beam is reflected by the mirror ( 4 ) being altered. In this way, the reflected beam (R) can be scanned to different locations on the surface (S). Providing two such optical scanning devices ( 1 a , 1 b) or using two piezoelectric actuators ( 10 aa , 10 bb) acting on a single platform ( 2 ) enables two dimensional scanning of the surface (S) by the optical scanning device/s ( 1,1 a , 1 b). The optical scanning device ( 1 ) of the present invention may be used in refractive eye surgery laser apparatus.</p> |
