LFS Series LFS-L8000-2
The POMEAS LFS series laser-image autofocus sensor system provides a complete closed-loop Z-axis system with sensor and motor control. Focusing principle: The POMEAS LFS sensor uses laser triangulation to determine focus direction and distance, overcoming many problems associated with other proximity-sensing technologies. A structured laser pattern is directed through the objective, reflected from the surface, and returned through the objective to the LFS sensor for imaging and analysis. This determines the distance and direction to the optimum focus position. A sharp point or line in the laser pattern indicates that the sample is in focus. A semicircular or rectangular laser pattern indicates that the sample lies above or below the focus position.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Laser Wavelength | 784 nm |
| Laser Power | 425 mW |
| Laser Safety Class | Class III |
| Maximum Detection Distance | 200 mm |
| Sensor sampling frequency | max:5 kHz |
| Structured-light mode | Line segment |
| Sample Reflectance | 1%~99% |
| Static focusing accuracy | ±1/4 of the objective depth of field or better |
| Dynamic focusing accuracy | ±1/2 of the objective depth of field or better |
| Autofocus repeat accuracy | ±1/3 of the objective depth of field or better |
| Power supply and power consumption [Electrical Interface] | 24V,2A(max) |
| Communication Interface [Electrical Interface] | RS232 |
| Analog Output [Electrical Interface] | ±10 V@±10mA |
| Digital Output [Electrical Interface] | Pulse/direction (differential 5V) |
| I/O signals [Electrical Interface] | Limit, emergency-stop, camera-synchronization, and in-focus signals |
| Z-axis type [Electrical Interface] | Stepper motor/servo motor/piezoelectric ceramic |
| Operating Temperature | 0~50 ℃ |
| Storage conditions | 10~40℃, 10~80% RH (noncondensing) |
| Dimensions | 135 mm × 50 mm × 52 mm |
| Weight | 450 g |
| Linear range [Objective (N.A.)=5×/0.14] | ±500 μm |
| Search range [Objective (N.A.)=5×/0.14] | ±1500 μm |
| Linear range [Objective (N.A.)=10×/0.28] | ±120 μm |
| Search range [Objective (N.A.)=10×/0.28] | ±600 μm |
| Linear range [Objective (N.A.)=20×/0.42] | ±50 μm |
| Search range [Objective (N.A.)=20×/0.42] | ±300 μm |
| Linear range [Objective (N.A.)=50×/0.55] | ±10 μm |
| Search range [Objective (N.A.)=50×/0.55] | ±120 μm |
Applications
Key Features
Datasheet
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