POMEAS Laser Image AF Sensor PMS-LFS series, which features a complete Z-axis closed-loop system with sensor and motor control.
Our products are capable of realizing autofocus in the following areas:
① Patterned surfaces with high contrast variation;
② smaller structures with high-magnification lenses;
③ materials with different refractive indices, such as laminated/layered substrates.
① Laser autofocus mode for ultra-high speed and high working range;
② Image AF mode for improved accuracy;
③ Hybrid AF mode, which intelligently selects laser or image focus to optimize speed and accuracy, virtually eliminating the problem of laser bad points while still allowing accurate tracking;
The system has a complete Z-axis closed loop system with sensor and motor control. It is equipped with a software interface that facilitates the setup, use and diagnosis of all necessary sensor and motor parameters and is easy to integrate into existing software architectures.
Principles of Focusing
Utilizing the optical principle that the point of light will be inverted after passing through the focal point, letting the Sensor judge whether the current Z-axis height is above or below the focal point, and then giving instructions to follow the focus quickly in one direction.
By the center point in the middle of the semicircle to judge the Sensor, set up the position is accurate in the focus changes to do switch to reduce the Sensor misjudgment.
Let’s help you to find the right solution for your project!