Optical objective module
An optical module and optical lens technology, applied in optics, optical components, installation, etc., can solve problems such as reduced focusing accuracy and reduced image quality
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[0052] The optical micromodule 1 ( FIG. 1 ) comprises a focusing optical lens group 2 with an optical axis 3 , a zoom lens group 4 with an optical axis 5 , and an optoelectronic imaging sensor 6 . The two optical lens groups 2 , 4 are arranged such that their optical axes 3 and 5 coincide and together form the optical axis 7 of the optical module 1 .
[0053] The optical lens group 2 is mechanically connected to the first ultrasonic motor 9 by a mount 8 . The optical lens group 4 is mechanically connected to the second ultrasonic motor 11 by the carrier 10 .
[0054] The two ultrasonic motors 9 , 11 together form the drive of the optical module 1 .
[0055]The two ultrasonic motors 9 and 11 consist of a piezoelectric plate 12 with friction elements 14 which press against opposing side surfaces 13 . An elastic press-on element 15 pressing the friction element 14 against the side surface 13 forms part of the carrier 8 , 10 . The friction element 14 together with the pressing ...
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