Main Camera Lens Focusing With Phase-Current Calibration for Macro Shooting
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Solution Overview
Problem
The high cost of implementing macro shooting functions is due to the need for dedicated macro lenses in cameras.
Innovation Solution
A lens focusing method that utilizes a calibration data set including phase differences and currents for reference calibrated macro distances to drive the main camera lens to focus, enabling macro shooting without a dedicated macro camera.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a dedicated macro lens is used to implement macro shooting function, then the macro shooting capability is improved, but the device cost increases
Solution Approach 1:
The main camera lens is designed to perform multiple functions by switching between normal shooting mode and macro shooting mode through focal length adjustment. The same lens structure serves both standard photography and macro photography purposes, eliminating the need for a separate dedicated macro lens and reducing overall device cost while maintaining macro shooting capability
Solution Approach 2:
The lens system incorporates dynamic focal length adjustment capability that allows the lens to transition between different shooting modes. By dynamically changing the focal length based on shooting requirements, the system achieves macro shooting functionality without requiring a fixed dedicated macro lens structure
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables macro photography functionality through the main camera lens, reducing costs by eliminating the need for a separate macro camera.
Implementation Method 1
obtaining a target phase difference of a preview image captured by the main camera lens under a macro shooting mode; obtaining calibration data set corresponding to the macro shooting mode, wherein the calibration data set includes calibration phase differences and calibration currents for reference calibrated macro distances
Implementation Method 2
driving the main camera lens to focus according to the target current
Data Source
AI summary
Disclosed in the present application are a lens focusing method and apparatus, and an electronic device and a computer-readable storage medium. The method comprises: acquiring a target phase difference of a preview image, which is collected by a main camera lens in a macro photographing mode; acquiring a calibration data set corresponding to the macro photographing mode; determining a target current on the basis of a calibration current corresponding to a calibration phase difference which matches the target phase difference; and driving, according to the target current, the main camera lens to perform focusing. By means of the present application, a macro photographing function can be achieved by means of a main camera lens.