Auto Focus Module based on Optical Triangulation Principle| iCore

 

iCORE has world class researchers in the field of machine vision with analog circuit design technology, precision instruments optics and lightning design technology, provides innovative machine vision solutions by internalizing electrical, electronic, optical, precision control, FPGA, firmware and software technologies. The LED light strobe controller provided by iCore generates and controls the current pulses, enabling stable and precise strobe lighting of high-power LEDs. A real-time auto focus module of iCore uses the principle of optical triangulation. 


FPGA-based real-time auto focus model using the principle of optical triangulation:

This is used in the automatic optical inspection (AOI) of a high magnification optical system that instantly detects faults of 1 μm or less in semiconductor and display testing by tracking the movement of the target object in real time and adjusting the optical picture.


Auto focus function to focus automatically on optical triangulation:

In high magnification optical systems, the depth of field (DOF) is quite shallow, hence adjusting the object's height could result in out-of-focus. iCore offers a real-time solution that measures and keeps the distance between the optical system and the target item constant.


Features of optical triangulation iFocus:

The iFocus auto focus module uses optical triangulation, where the displacement of the laser beam reflected off the target object is captured by the AF camera. The AF camera does real-time motor control and computes the changes in pixel lengths around the focus spot.Its non-contact distance measuring sensor guarantees homogeneous image quality throughout the image region in addition to high-speed and high-precision measurement. With an FPGA integrated into its module, iFocus can swiftly control the AF camera.


Applications:

Semiconductor wafer inspection

OLED, Micro LED inspection

FCPB Inspection

Review Inspection

Glass Inspection


If you are looking for optical triangulation in Korea, you can find it on iCORE


Click here to contact iCORE


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