Title :
Miniature tunable multi-element Alvarez lenses
Author :
Yongchao Zou ; Wei Zhang ; Feng Tian ; Fook Siong Chau ; Guangya Zhou
Author_Institution :
Nat. Univ. of Singapore, Singapore, Singapore
Abstract :
We report for the first time a miniature multi-element Alvarez lens driven by a piezo actuator integrated with mechanical displacement amplifiers. With an input DC voltage varying from 0 to 130 V, a dynamic focal length tuning range from 16 mm to 32 mm is experimentally demonstrated. There is no noticeable distortion in presented images formed by such an Alvarez lens. Within the whole tuning range, no performance degradation during operation is observed.
Keywords :
integrated optics; lenses; optical tuning; dynamic focal length tuning range; input DC voltage; mechanical displacement amplifiers; miniature tunable multi-element Alvarez lenses; piezo actuator; size 16 mm to 32 mm; voltage 0 V to 130 V; Actuators; Lenses; Optical amplifiers; Optical distortion; Optical imaging; Optical refraction; Tuning; Alvarez lens; Optical design; variable focus;
Conference_Titel :
Optical MEMS and Nanophotonics (OMN), 2014 International Conference on
Conference_Location :
Glasgow
Print_ISBN :
978-0-9928-4140-9
DOI :
10.1109/OMN.2014.6924520
