Auto Focus Module
iFocus is an FPGA-based auto-focus module that incorporates iCore's
specialized circuit, mechanical, optical, and control design technologies.
The Auto Focus Module is applied in high-magnification optical systems of AOI (Automated
Optical Inspection) and microscope inspection systems, and is used in various fields. iCore has developed a variety of sensing types for auto-focus
sensors, such as TTL (Through The Lens) and Optical Triangulation, tailored to meet customer
needs. Additionally, various lens modules and Z-axis actuators, used in conjunction with the
auto-focus sensor, are also designed in-house, providing diverse solutions to satisfy
customers.
Features
Auto Focus Feature
Automatic focus adjustment with Auto Focus
Optical Triangulation
Auto Focus using external optical triangulation method
TTL Method
Through the Lens Auto Focus
Focus Update Rate
Achieves up to 1.2kHz update speed
FPGA
High-speed FPGA-based
Multi Layer
Supports Multi Layer (Max. 5)
Auto Focus Feature
Automatic focus adjustment with Auto Focus
Automatic focus adjustment with Auto Focus
In high magnification optical systems, the depth of field (DOF) is
shallow, which may cause focus issues when the height of the subject changes. iCore
provides a solution that measures the distance between the optical system and the
subject in real-time, maintaining a constant distance.
External Optical Triangulation Type Auto Focus
The iFocus Triangulation Type is an auto focus module that uses
optical triangulation, where the AF sensor captures the displacement of a laser beam
reflected from the target object. The AF sensor calculates the pixel-level distance
around the focus area and performs real-time motor control.
Through The Lens Type Auto Focus
The iFocus TTL type is an auto focus method that measures the
distance to the sample based on laser light passing through the internal path of the
lens to focus. Unlike the traditional external triangulation method, where it was
difficult to install external lighting below or around the objective lens due to laser
interference, this method allows for a wider range of lighting usage and is particularly
suited for high-magnification optical systems over 20x.
High-speed Focus Update Rate of 1.2kHz
iFocus is equipped with a high-speed FPGA that updates the focus data
1,200 times per second, measuring the height of the sample in real-time even in
high-speed environments. With real-time position measurement, Auto Focus can be
implemented not only in typical area cameras but also in inspection environments using
line scan cameras.
Equipped with High-Speed FPGA
iFocus, equipped with a high-speed FPGA, measures positions in
real-time based on the fast 1.2kHz Focus Update Rate and also includes a control
function that controls the Z-axis based on the measured data.
Multi-Layer Function up to 5 Layers
iFocus's multi-layer function can recognize up to 5 layers and
automatically track the focus of the layer designated by the user, adjusting the focus
even in stacked sample structures.
Line-up
IT-AF-TTL1
Auto Focus Sensor
This is a TTL Type Auto Focus Sensor model, and requires a specially
designed Tube lens and Z-axis control.
| Focus Update Rate | 1.2kHz |
|---|---|
| Sensing Type | Through The Lens |
| Interface | RS485 (9,600bps~921,600bps) |
| Input Voltage | 24V, 0.5A |
| Function | Auto Exposure / Auto Laser Control / Laser Brightness Control by PD Feedback |
IT-AF-M1
Auto Focus Sensor
The IT-AF-M1 is a module that integrates various autofocus functions such as displacement measurement, motion control, and laser control.
It also offers various interface options, such as analog output, digital output, and stepper motor driver, making it applicable to AF systems under various conditions.
It also offers various interface options, such as analog output, digital output, and stepper motor driver, making it applicable to AF systems under various conditions.
- Suitable for large-aperture FA lenses
IAF-LLC03
Linear Lens Changer
The Linear Lens Changer (LLC) is a lens changing module based on a high-speed linear shaft motor, capable of rapidly swapping objective lenses. It moves adjacent lenses within 0.2 seconds and guarantees an accuracy of ±1μm. It is optimized as a solution when applied to iCore's iFocus (auto-focus module).
Focus Update Rate
Auto Focus that automatically adjusts the focus
In high-magnification optical systems, shallow depth of field (DOF) can cause the focus to be lost when the height of the subject changes.
iCore provides a solution that measures the distance between the optical system and the subject in real-time, maintaining a constant distance.
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