INTEGRATED FOCAL LENGTH ADJUSTING SYSTEM FOR OPTICAL APPARATUS

摘要

An integrated focal length adjusting system for optical apparatus comprises a first optical lens (31), a hollow first housing (2), a hollow second housing (1) and a plurality of piezoelectric components (11). The first optical lens is disposed inside the hollow first housing, and there is thread fit between the hollow first housing and the hollow second housing. The plurality of piezoelectric components are attached to the hollow first housing or the hollow second housing. Progressive wave is generated by the attached housing when it is actuated and oscillated by the plurality of piezoelectric components, relative rotation and axial movement are generated between the two housings, thereby realizing change and adjustment of focal length.