Patent ID: 9488828
Filing Date: 2016-11-08
CPC Classification: B81B,G02B

Claim Text:
1. An optical deflector apparatus comprising: a mirror; an inner frame surrounding said mirror; a first outer frame surrounding said inner frame; an inner piezoelectric actuator coupled between said mirror and said inner frame and adapted to flex said mirror around a first axis of said mirror; a first outer piezoelectric actuator coupled between said inner frame and said first outer frame and adapted to flex said mirror around said first axis of said mirror; a driver adapted to generate an offset drive voltage and a first rocking drive voltage, said offset drive voltage being applied to a first piezoelectric actuator selected from said inner piezoelectric actuator and said outer piezoelectric actuator, said first rocking drive voltage being applied to a second piezoelectric actuator different from said first piezoelectric actuator, selected from said inner piezoelectric actuator and said first outer piezoelectric actuator.