2results about How to "Fast focusing" patented technology

This invention discloses a microscopic imaging focusing method and an automatic focusing device, belonging to the field of microscopic optical imaging technology. The microscopic imaging focusing method sequentially includes: preparation, coarse focusing, and fine focusing; the preparation includes calibrating the relationship between the image sharpness of chip markers and the driving current of the liquid lens. This invention is applied to the imaging focusing of complex biological samples containing a large number of impurities, solving the technical problem that existing automatic focusing methods cannot achieve fully automatic, high-speed focusing on complex biological samples within microfluidic chips, enabling fully automatic and rapid focusing for highly complex biological samples.

The utility model discloses a lens assembly, a lens and an image pickup device. The lens assembly comprises a skeleton, a focusing group and a driving mechanism. The focusing group comprises a lens group frame, and a focusing lens and an elastic clamping piece which are arranged on the lens group frame; the lens group frame is arranged in the skeleton in a sliding manner along the axial direction of the optical system; the driving mechanism comprises an installation support, a piezoelectric actuator and a friction rod, the piezoelectric actuator and the friction rod are arranged on the installation support, the installation support is arranged on the side wall of the framework, the piezoelectric actuator and the friction rod are adhered in the axial direction of the optical system, and the friction rod is clamped on the elastic clamping piece. According to the technical scheme, the piezoelectric actuator is adopted as a power source, the focusing set is driven to move in the framework in the axial direction of the optical system based on the piezoelectric stick-slip driving principle to achieve the focusing purpose, the design size of the driving mechanism can be effectively reduced, the size of the lens is further reduced, and the focusing speed of the lens is increased.