Temperature drift coefficient compensation method and device, lens, imaging device and movable platform

Abstract

The embodiment of the invention provides a temperature drift coefficient compensation method and device, a lens, an imaging device and a movable platform. The method comprises the steps: at a preset temperature, obtaining a preset temperature drift coefficient corresponding to a focusing lens, wherein the focusing lens is used for conducting focusing operation on an imaging object; obtaining a theoretical focusing position of the focusing lens according to a preset temperature drift coefficient; determining an actual focus position for the imaging object; and according to the theoretical focusing position and the actual focusing position, determining a compensation parameter corresponding to the preset temperature drift coefficient, wherein the compensation parameter is used for carrying out compensation operation on the preset temperature drift coefficient. According to the technical scheme provided by the embodiment of the invention, the preset temperature drift coefficient of any lens can be subjected to temperature compensation operation, and the focusing position is determined based on the updated preset temperature drift coefficient, so that the accuracy and reliability of determining the focusing position are ensured, and the application range of the method is expanded.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of photography, and in particular to a temperature drift coefficient compensation method, device, lens, imaging device and movable platform. Background technique [0002] Temperature drift refers to the change phenomenon of semiconductor device parameters caused by temperature changes, referred to as temperature drift. For an imaging device that supports focusing operations, the optical lenses and structural components in the lens will cause shifts in focus point positions due to thermal expansion and contraction. [0003] When using the imaging device for focusing operation, in order to ensure the clarity of the captured image, a temperature compensation method is proposed for the influence of temperature drift on the focusing operation. Fit the temperature drift curve through the temperature drift parameter test of the main lens. However, if the lens has a large difference, then the...

AI Technical Summary

Problems solved by technology

However, if the lens has a large difference, then the temperature drift data obtained through the temperature drift curve is unreliable

The temperature drift calibration for a single lens is not only time-consuming and labor-intensive, but also costly, which cannot meet the requirements of mass production

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