Marking Head (STRM)

Marking Head (STRM)

STRM series precision optical scanning system is a totally digital 2D galvanometer system. Embedded control system guaranteed the servo loop operation. It is compact, stable and cost-efficiency.

2D Marking Heads

Part number Max. entrance dia. mm Control DC power supply, V Dimension LxWxH,mm
LSRM-xxxx-10-A10 10 XY2-100 15 114x97x94
LSRM-xxxx-10-Q10 10 XY2-100 15 114x97x94
LSRM-xxxx-12-Q12 12 XY2-100 15 114x97x94
LSRM-xxxx-14-Q14 14 XY2-100 15 134x109x107
LSRM-xxxx-20-Q20 20 XY2-100 15 170x150x140
LSRM-xxxx-30-Q30 30 XY2-100 15 195x150x165
LSRM-xxxx-50-Q50 50 XY2-100 15 246x202x168

3D Marking Heads

Part number Max entrance dia. mm Control DC power supply, V Dimension

LxWxH,mm

LSRM-1064-6-QPT 6 XY2-100 15 254x97x105
LSRM-1064-7.2-QPT 7.2 XY2-100 15 254x97x105
LSRM-1064-8.4-QPT 8.4 XY2-100 15 254x97x105
LSRM-532-3.3-QPT 3.3 XY2-100 15 274x109x116
LSRM-532-4-QPT 4 XY2-100 15 274x109x116
LSRM-532-4.6-QPT 4.6 XY2-100 15 274x109x116
LSRM-xxxx-QP20 XY2-100 15 350x140x188
LSRM-xxxx-QP30 XY2-100 15 400x155x194

2D Marking Heads (Scanheads)

1. LSRM-A10 Series 2D Marking Heads

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.

Part number LSRM-xxxx-10-A10
Aperture 10mm
Beam displacement 13mm
Tracking error time 220us
Offset drift 75urad/K
Gain drift 200ppm/K
Step response time
1% of full scale 0.3ms
10% of full scale 0.8ms
Marking speed (1) 2m/s
Positioning speed 12m/s
Writting speed (2)
Good quality 500cps
High quality 450cps
Repeatability < 22urad
Drift over 8 hours (After 30min warm-up) < 0.3mrad
Typical scan angle 40 degrees
Interface (3) XY2-100 Enhanced
Operating temperature 25°C±10°
Power requirements ±15V DC, 150W
Driver mode Digital
Resolution 16Bit
Max laser power (4) 100W
Dimenion 114x97x94mm
(1) with F-Theta objective, f=160mm
(2) single-stroke characters of 1mm height
(3) XY2-100 Enhanced with status feedback
(4) The mirror of 1064nm can stand max laser power

2. STRM-Q 10/12/14 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.

LSRM-7-Q10 LSRM-12-Q12 LSRM-10-Q14
Aperture 10mm 12mm 14mm
Beam displacement 13mm 14.5mm 18.1mm
Tracking error time 130us 160us 160us
Offset drift 30urad/K 30urad/K 30urad/K
Gain drift 50ppm/K 50ppm/K 50ppm/K
Step response time
1% of full scale 0.3ms 0.3ms 0.5ms
10% of full scale 0.8ms 0.8ms 1ms
Marking speed (1) 2.5m/s 2m/s 2m/s
Positioning speed 15m/s 11m/s 8m/s
Writting speed (2)
Good quality 800cps 660cps 660cps
High quality 500cps 410cps 410cps
Repeatability < 15urad < 15urad < 15urad
Drift over 8 hours (After 30min warm-up) < 0.1mrad < 0.1mrad < 0.1mrad
Typical scan angle 40 degrees 40 degrees 40 degrees
Interface (3) XY2-100 Enhanced XY2-100 Enhanced XY2-100 Enhanced
Operating temperature 25°C±10° 25°C±10° 25°C±10°
Power requirements ±15V DC, 150W ±15V DC, 150W ±15V DC, 150W
Driver mode Digital Digital Digital
Resolution 16Bit 16Bit 16Bit
Max laser power (4) 100W 100W 100W
Dimension 114x97x94mm 114x97x94mm 134x109x107mm
(1) with F-Theta objective, f=160mm
(2) single-stroke characters of 1mm height
(3) XY2-100 Enhanced with status feedback
(4) The mirror of 1064nm can stand max laser power

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)

LSRM-20-Q20 LSRM-30-Q30
Aperture 20mm 30mm
Beam displacement 26.5mm 36.5mm
Tracking error time 360us 550us
Offset drift 30urad/K 30urad/K
Gain drift 50ppm/K 50ppm/K
Marking speed 1m/s 0.7m/s
Positioning speed 6m/s 3m/s
Writing speed
Good quality (1) 320cps 220cps
High quality (2) 210cps 150cps
Repeatability <15urad < 15urad
Drift over 8 hours < 0.1mrad < 0.1mrad
(After 30min warm-up) Typical scan angle 40 degrees 40 degrees
Interface XY2-100 Enhanced XY2-100 Enhanced
Operating temperature 25°±10° 25°±10°
Power requirements ±15V DC, 150W ±15V DC, 150W
Driver mode Digital Digital
Resolution 16Bit 16Bit
Max laser power (3) 1000W 5000W
Dimension 170x140x130mm 195x150x165mm
(1) with F-Theta objective, f=160mm
(2) single-stroke characters of 1mm height
(3) The mirror of 1064nm can stand max laser power in air cooling

3D Marking Heads (Scanheads)

Part number Max entrance dia. mm Control DC power supply, V Dimension
LxWxH,mm
LSRM-1064-6-QPT 6 XY2-100 15 254x97x105
LSRM-1064-7.2-QPT 7.2 XY2-100 15 254x97x105
LSRM-1064-8.4-QPT 8.4 XY2-100 15 254x97x105
LSRM-532-3.3-QPT 3.3 XY2-100 15 274x109x116
LSRM-532-4-QPT 4 XY2-100 15 274x109x116
LSRM-532-4.6-QPT 4.6 XY2-100 15 274x109x116
LSRM-xxxx-QP20 XY2-100 15 350x140x188
LSRM-xxxx-QP30 XY2-100 15 400x155x194

1. LSRM-QPT: 3D Post-Scanning Solution

(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.

Laser type Nd:YAG Nd:YAG doubled
Wavelength 1064nm 532nm
Beam expansion factor 1.67 3
Input aperture 6mm/7.2mm/8.4mm 3.3mm/4mm/4.6mm
Scan head apertures 10/12/14mm 10/12/14mm
Focus range in Z-direction ±22.5mm (1) ±2.5mm (2)
Tracking error time 700us 700us
Dimension 254x97x105mm 274x109x116mm
Remarkds: (1) The focal length of the f-theta lens is 210mm; (2) The focal length of the f-theta lens is 100mm. All the above parameters are theoretical.

2. LSRM-QP20/30: 3D Pre-Scanning Solution

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

LSRM-QP20/30: 3D Pre-Scanning Solution includes a 2D galvoscanner system LSRM-Q, a dynamic focus unit Proton series, and a galvo system controller LSRM-UMC4. It uses the Pre-Objective Scanning technology to realize the large field and 3D laser application. The advantage of this system: fast, small focal spot, small power loss.

CO2 laser configuration example: LSRM-QP30

Scanning field 600x600mm 800x800mm
Focal spot diameter 364um 487um
Working distance 502mm 777mm
Resolution 9um 12um

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

Scanning field 400x400mm 600x600mm 800x800mm
Focal spot diameter
QP-20 34um 52um
QP-30 - 36um 48um
Working distance
QP-20 502mm 777mm
QP-30 - 777mm 1051mm
Resolution 6um 9um 12um

UV laser configuration example: LSRM-Q14 + Proton

Scanning field 400x400mm 600x600mm
Focal spot diameter 17um 26um
Working distance 520mm 795mm
Resolution 6um 9um
  • 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)

Laser wavelength 1064nm 532nm
Pilot laser wavelength 635nm 635nm
Diameter of entering beam 14mm 10mm
Scan head mirror coating 1064nm + 635nm 532nm + 635nm
Processing field size 100 x 10 0mm 100 x 100mm
Observation wavelength 1064nm / 635nm 532nm / 635nm
Focal length camera objective 102mm 102mm
Flat field objective 160mm 210mm 254mm 163mm
Observation field size 10.4x8.3mm 13.7x10.9mm 16.6x13.3mm 10.6 x 8.5mm

Other Parameters:

Diameter of entering beam 14mm
Operating temperature 25℃ ±10℃
Max. Chip size 95 %
Camera Connection type ≥1/2″
Weight(without camera) C-mount
Laser transmissivity ≈2.6 K g
Outline dimension 115x112x215mm

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.