An automatic adjustment jig for focusing of a fixed-focus lens and its adjustment method

Abstract

The invention discloses an automatic adjustment jig for focusing a fixed-focus lens and an adjustment method thereof. The adjustment jig includes a machine base, a rotating device, a driving device and a control device. The control device has a An electronic input interface for the image sharpness information of the lens and an electronic output interface for outputting a rotation direction and a rotation step signal, the electronic output interface is connected to the driving device, the driving device and the rotating device are installed on the base, and the rotating device There is a mechanical rotating interface for connecting with the lens, and the driving device is connected to the rotating device to drive it to rotate the fixed-focus lens according to the rotating direction and the rotating step signal. In this way, the whole process does not require manual participation, which reduces the workload of operators, greatly improves production efficiency, reduces labor costs, and avoids yield problems caused by operators' visual fatigue, effectively improving yield.

Description

technical field [0001] The invention relates to the technology in the field of lens automatic focusing, in particular to an automatic adjustment jig for focusing a fixed-focus lens and an adjustment method thereof. Background technique [0002] At present, there are surveillance cameras and action cameras on the market. These cameras use a fixed focal length lens, which has been focused and fixed with glue when shipped. When focusing a fixed-focus lens, most manufacturers currently use manual operations, and the operator adjusts the image on the monitor to the clearest after aligning the fringe drawing. Since the definition is judged subjectively, not only is the accuracy difficult to control, but also workers who stare at the monitor for a long time are prone to visual fatigue, and twisting the lens for a long time may easily cause finger joint stiffness, which in turn makes production efficiency and yield unstable. Contents of the invention [0003] In view of this, the...

AI Technical Summary

Problems solved by technology

Because the definition is judged subjectively, not only the accuracy is difficult to control, but also workers who stare at the monitor for a long time are prone to visual fatigue, and twisting the lens for a long time may easily cause finger joint stiffness, which in turn makes the production efficiency and yield unstable.

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