Device for vibrationally deviating an optical beam. It includes a frame, a main mechanical resonator, an auxiliary mechanical resonator and vibration generator means. The main mechanical resonator is formed of an optical member such as a mirror and resilient means connected to the optical member and...http://www.google.com/patents/US4302709?utm_source=gb-gplus-sharePatent US4302709 - Vibrating device with motionless frame
