Patent Number: 6,295,171

Title: Piezoelectric light beam deflector

Abstract: A light beam deflector comprises an initial beam deflector that imparts a small initial deflection, and a beam deflection amplifier that increases the initial small deflection by a multiplication factor. There are five embodiments of the initial beam deflector. The first four use a pair of lenses and a piezoelectric actuator affixed to one lens. When the parallel lens axes are separated by a distance, the incident light beam will be deflected by a small angle, typically up to about 5.degree.. The fifth embodiment comprises a mirror affixed to a piezoelectric actuator, which tilts the mirror. The beam deflection amplifier has five embodiments. The first is a Keplerian telescope lens first stage and a negative lens system second stage. The first is a Galilean telescope lens first stage and a negative lens system second stage. The third embodiment is either a Keplerian or Galilean telescope lens alone. The fourth embodiment replaces the single second lens of the first stage with a compound lens system. The fifth embodiment uses a special sphere lens alone.

Inventors: Chao; Yong-Sheng (Storrs, CT), Zhao; Ying (New York, NY)

Assignee: Advanced Optical Technologies, Inc.

International Classification: G02B 26/08 (20060101); G02B 007/02 (); G02B 026/08 ()

Expiration Date: 09/25/2018