I. Definition of an Autofocus Industrial Camera

1. Core Function: Automatically adjusts the lens focus using a built-in focusing system (such as phase detection, laser ranging, or contrast detection) to ensure a clear image of the subject.

2. Industrial Features: Optimized for high-precision, high-efficiency industrial applications, featuring vibration resistance, resistance to environmental interference, and a long service life.

II. Technical Principles and Implementation Methods

1. Active focusing: Determines the object distance by emitting a signal and calculating the reflection time, then drives the lens to adjust to the corresponding focal length.

2. Passive focusing: Directly calculates the focal length deviation by comparing phase differences at the edges of the target using sensor pixels, analyzes local changes in image contrast, and gradually adjusts to achieve maximum sharpness.

3. Hybrid Autofocus Technology: Combines active and passive methods to balance speed and accuracy (e.g., in industrial robot vision guidance).

III. Application Scenarios

Widely used in machine vision, quality inspection, automated production lines, robot navigation, and logistics sorting.