Marking Head (STRM)

2D Marking Heads

3D Marking Heads

2D Marking Heads (Scanheads)

1. LSRM-A Series 2D Scanning Systems

LSRM-A Series is a totally digital 2D galvanometer system. Embedded control system guaranteed the servo loop operation. It is compact, stable and cost-efficient. It is the basic version of LSRM series scanheads. Mirrors of general wavelengths are available, like 1064nm, 532nm 355nm, 10.6um, suitable for laser marking, microscope, drilling, trimming and cutting etc.

2. LSRM-Q Series 2D Scanning Systems

LSRM-Q series is totally digital 2D galvanometer system. System operates based on the embedded platform. It is compact, stable and high quality. More fast and accuracy. The offset drift and gain drift are very low. Mirrors of typical laser wavelengths are available and optimized for inertial and stiffness. Suitable for high end application like ITO scratching, laser micro processing etc.

3. LSRM-Q20/30 2D Marking Heads

LSRM-Q series is totally digital 2D galvanometer system. System operates based on the embedded platform. It is compact, stable and high quality. More fast and accuracy. The offset drift and gain drift are very low. Mirrors of typical laser wavelengths are available and optimized for inertial and stiffness. Suitable for high end application like ITO scratching, laser micro processing etc. Added water and air cooling function to improve the stability of the system.

(All angles are in optical degrees)

(1) with F-Theta objective, f=160mm   
(2) single-stroke characters of 1mm height  
(3) XY2-100-EH with status feedback to change without notice
(4) The mirror of 1064nm can stand max laser power in air cooling 

3D Marking Heads (Scanheads)

1. LSRM-QPT Series Post-Scanning Systems

(Refer to LSRM-Q datasheets for 2D marking heads)

This solution includes a 2D galvoscanner system LSRM-Q Series, a dynamic focusing unit Proton Series, F-theta lens and a galvo system controller LSRM-UMC4. It uses the post-objective scanning technology, the working volume is about 150*150*45 with the FL 210mm F-theta lens. The advantages are fast marking speed, small focal spot and low power loss.

2. LSRM-QP Series Pre-Scanning Systems

(Refer to LSRM-Q10/12/14 datasheet for 2D marking heads)

LSRM-QP series 3D pre-scanning system includes a 2D galvo scanner system LSRM-Q, a dynamic focusing unit Proton series, and a controller LSRM-UMC4. It uses the pre-objective scanning technology to realize the large field and 3D laser application. Their advantages are fast marking speed, small focal spot and low power loss.

CO2 laser configuration example: LSRM-QP30

Nd:YAG laser configuration example: (λ=1064nm) LSRM-QP20/30

UV laser configuration example: LSRM-Q14 + Proton

• All of the above parameters are theoretical values.

• Distance between edge of deflection unit and working surface. This distance is dependent on the product model and will vary with laser pergence and objective tolerance.

• Actual spot size and writing speed are dependent on material and application.

STRM-CA: CCD Adapter

Traditional galvo scanner correction method is given priority to the manual measurement, accuracy is difficult to be guaranteed, thus affecting the processing quality. Galvo scanner with a camera adapter vision module can greatly improve the accuracy of the calibration, and monitor work surfaces at the same time.

Installation:

The camera adapter is mounted between the scan head’s beam entrance and the laser flange. (see Fig 1).

Working Principle:

Illumination light reflected from the surface of the workpiece pass through achromatic F-theta, galvo scanner, beam splitter, CCD lens to reach the CCD sensor. Adjust beam splitter position to compensate the error of machining and assembly to ensure the optical path of the laser and reflected light coaxial. Make the laser coincides with the CCD image detection point.

Field of View (FOV):

Field of view is decided by the lens focal length, CCD camera, CCD camera photosensitive element size together. For example, 160mm lens, CCD target surface size of ½ ", the field of view is 10.4mm * 8.3mm (see table)

Other Parameters:

Coaxial CCD adapter tuning method and steps:

1. Adjust the galvanometer height, find the galvanometer focus position.

2. Mark the crosshair.

3. Adjust the focus ring 4 (CW or CCW), to the camera showing a clear image.

4. Locking screw 5 to lock the focus ring 4.

5. Loosen screw 7, CW or CCW adjusting ring 6, to make the orientation of the image the same as the crosshairs.

6. Lock screw 7.

7. Observe the CCD image crosshair and the marked crosshair position. If the two crosshair does not coincide with each other need to open the protective cover, tuning the knob 2 and knob 3. Take ② (see Figure 1) as an example, when the knob 2 is adjusted, the centre of the image will move left and right diagonally. When the knob 3 is adjusted, the centre of the image will move up and down diagonally .Tuning knob 2 and 3 to make the image crosshair coincide with the marked crosshair.

8. After tuning restore the cover.