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Chapter 4 

Functional description 

16 

RAYLASE 2-Axis Subsystems for Laser Beam Deflection 

MN072 / v1.0.0 

For deflection units fitted with an F-Theta lens only 

4.2 

F-Theta lens 

The F-Theta lens is specially designed for use with two-axis deflection units. It focuses the 
laser beam at optimum quality on any position in the marking field. At the same time, it pro-
vides partial optical compensation for the barrel-shaped distortion that is unavoidable when 
using a two-axis deflection unit. The remaining distortion (see below) must be compensated 
by the deflection unit drive. 

 

 

 

 

 

 

Distortion caused by two-mirror 
deflection. 

 

Distortion caused by F-Theta 
lens. 

 

Distortion caused by two-
mirror deflection and F-Theta 
lens. 

 

 

 

1  Lens element incl. lens 
2  Protection window 

3  Clamp ring 
4  Protective cap 

 

Assembly instructions 

o

  Before assembly, check the lens and the protection window for dirt, scratches or cracks. 

If the optics is dirty, it must be cleaned (

 page 22, Instructions for cleaning lenses and 

protective glasses). 

An element with a scratched or cracked lens and/or protection window must be 
replaced. If necessary, the protection window can be replaced separately. 

o

  Screw the lens into the beam output on the deflection unit until it is positioned securely. 

Fig. 3

 

Field distortion 
with and without  
F-Theta lens 

Fig. 4

 

Example: F-
Theta lens for 
Nd:YAG 

Summary of Contents for MINISCAN II

Page 1: ...2 Axis Subsystems for Laser Beam Deflection MINISCAN II ...

Page 2: ...the right to change the information contained in this manual without prior notice All rights are reserved Duplication of this manual in whole or in part particularly by photocop ying scanning or imaging and reproduction by any means are forbidden without the prior written consent of RAYLASE ...

Page 3: ...turer 11 2 7 Customer support 11 2 8 Status LEDs 12 3 TECHNICAL DATA 13 3 1 Rating plate code 13 3 1 1 Detailed Description 14 3 2 Conformity with directives 14 4 FUNCTIONAL DESCRIPTION 15 4 1 Laser beam deflection unit 15 4 2 F Theta lens 16 4 3 Analog interface 17 4 4 Digital interface 18 4 5 Power supply 19 5 INSTALLATION 20 6 MAINTENANCE AND CLEANING 21 6 1 Cleaning the housing 21 6 2 Cleaning...

Page 4: ...sure compliance with all local and national regulations 1 2 Laser shutter The deflection unit is designed to deflect an input laser beam and output it again The deflec tion unit cannot block or weaken the laser beam To prevent unwanted emission of the laser beam above a particular danger class the laser device must be fitted with a shutter page 6 Classification of laser devices The laser device mu...

Page 5: ...of the de flection unit If the seal is broken all warranty claims against RAYLASE are void A laser warning sign must be attached at the point where laser radiation is emitted This provides information about the type of radiation specific hazards and the degree of protection The laser warning sign is attached by the OEM customer in accordance with the laser device s classification page 6 Classifica...

Page 6: ...is in the visible spectrum from 400 to 700 nm Short term ex posure up to 0 25 s is not dangerous to the eyes as long as the cross section is not re duced by optical instruments magnifying glasses lenses telescopes Additional radiation components outside the wavelength range from 400 700 nm meet the requirements for class 1M 3R The accessible laser radiation is in a wavelength range of 302 5 to 10 ...

Page 7: ...can be exposed to the radiation as a result Note that even apparently diffuse surfaces can reflect laser radiation and a laser beam that has been reflected several times can still be dangerous The laser area must be indicated by corresponding warning signs or lamps and protected by appropriate shading and interlock switches No flammable or explosive objects or liquids should be located in the lase...

Page 8: ...es made of zinc selenide Zinc selenide lenses can be destroyed by improper loading This can lead to release of dust with hydrogen selenide and selenium dioxide These dusts can cause cancer are toxic if swallowed and very toxic by inhalation Please observe the specified maximum applicable laser power in the data sheet Please note also that soiled lenses strengthen the absorption of laser power and ...

Page 9: ...o will be involved in developing in stalling or using a laser device featuring the RAYLASE deflection unit If the deflection unit is sold on this operating manual or an authorized copy must be passed on with it 2 2 Intended use The deflection unit is developed for two dimensional deflection and focus laser radiation in a suitable working range If the materials to be processed generate toxic fumes ...

Page 10: ...Software RAYLASE weldMARK or RAYLASE RLScrib e or customer specific software Power supply RAYLASE Deflection unit Laser system RAYLASE RLC USB unit PC USB port Driver for RAYLASE control cards Software RAYLASE weldMARK or RAYLASE RLScrib e or customer specific software Power supply RAYLASE Deflection unit Laser system RS232 Driver for RAYLASE control cards Software RAYLASE weldMARK or RAYLASE RLSc...

Page 11: ...eaning of the optical areas If the warranty period is expired Note No implicit guarantee or warranty of suitability for specific purposes has been made RAYLASE is not responsible for damages arising from use of the product Individual assem blies or other assemblies manufactured by RAYLASE may be subject to separate warranty conditions Refer to the corresponding manuals for further information 2 6 ...

Page 12: ...the deflection unit LED arrangement Name Color Meaning D1 red CLK error Data transmission faulty Cable defective D2 red Parity error X D3 red Parity error Y D4 green Temp status X Temperature status availa ble if LEDs are lit D5 green Temp status Y D6 orange New data X New data is being trans ferred if status LEDs are lit D7 orange New data Y D8 red Error X Galvanometer scanner or driver electroni...

Page 13: ... 850nm to 870nm 1064nm 900 1030 AL 900nm to 1030nm 900 1100 AL 900nm to 1100nm 915 975 915nm 975nm 975 975nm 975 985 AL 975nm 985nm Y 1064nm C 9000nm to 11000nm AU C02 wideband C 10600nm AL Aluminum coating Version deviation VA1 DSB 2 8320 9mm no Neck 22 5 VA2 DSB 3 8320 9mm no Neck 22 5 VB1 DSB 2 8320 10mm no Neck 22 5 VB2 DSB 3 8320 10mm no Neck 22 5 VC1 DSB 2 8320 9mm Neck 22 5 VC2 DSB 3 8320 9...

Page 14: ... cooling and air cooling for mirrors W2A water cooling with 90 angle and air cooling for mirrors Mechanical design others L Head with a lager input aperture for LTM F Head combined with FOCUSSHIFTER Tuning LN low Noise RA short acceleration time ST minimal step time VC vector ML multiple tuning default LN MR multiple tuning default RA MS multiple tuning default ST Connector D1 25pin D Sub connecto...

Page 15: ...is shown in Fig 2 Deflection is performed by two mirrors each of which is moved by a galvanometer scanner The deflection unit has a beam input into which the laser beam is fed and a beam output through which the laser beam is emitted from the unit after deflection Only suitable lasers can be fed into the beam input Refer to the corre sponding data sheet in the appendix for details Depending on the...

Page 16: ...ive Distortion caused by two mirror deflection Distortion caused by F Theta lens Distortion caused by two mirror deflection and F Theta lens 1 Lens element incl lens 2 Protection window 3 Clamp ring 4 Protective cap Assembly instructions o Before assembly check the lens and the protection window for dirt scratches or cracks If the optics is dirty it must be cleaned page 22 Instructions for cleanin...

Page 17: ...n analog or a digital interface refer to the code on the rating plate page 13 Rating plate code PIN Signal PIN Signal 1 13 25 14 25 PIN D SUB 1 X COMMAND 14 X COMMAND 2 SIGNAL GND 15 X POSITION 3 SIGNAL GND 16 Y POSITION 4 SIGNAL GND 17 Y COMMAND 5 Y COMMAND 18 nc 6 nc 19 nc 7 nc 20 nc 8 nc 21 nc 9 VSS 22 VSS 10 VSS 23 GND Input 11 GND Input 24 GND Input 12 VSS 25 VSS 13 VSS To prevent errors shie...

Page 18: ...lowing connection table PIN Signal PIN Signal 1 13 25 14 25 PIN D SUB 1 I SENDCLOCK 14 I SENDCLOCK 2 I SYNC 15 I SYNC 3 I X CHANNEL 16 I X CHANNEL 4 I Y CHANNEL 17 I Y CHANNEL 5 nc 18 nc 6 O HEAD STATUS 19 O HEAD STATUS 7 nc 20 nc 8 nc 21 nc 9 nc 1 VSS 1 22 nc 1 VSS 1 10 nc 1 VSS 1 23 GND Input 11 GND Input 24 GND Input 12 nc 1 VSS 1 25 nc 1 VSS 1 13 nc 1 VSS 1 I Diff Input nc not connected O Diff...

Page 19: ... pin D SUB connector only 4 5 Power supply The 9 pin D SUB connector provides the deflection unit with power The power supply must be provided by the OEM customer Refer to the following connection and parameter table PIN Designation PIN Designation 6 1 5 9 9 PIN D SUB 1 VSS 6 VSS 2 VSS 7 GND 3 GND 8 GND 4 VSS 9 VSS 5 VSS ...

Page 20: ...t prevention regulations BGV B2 must be observed Connecting cables may not be subjected to mechanical strain The deflection unit must be protected against moisture dust and corrosive vapors The optical components may only be touched when wearing suitable cotton gloves The deflection unit must be protected against static discharge and strong electromagnetic fields The power density of the input las...

Page 21: ...system Warning The laser beam can cause severe injury to the eyes and the skin Before clean ing make sure that the laser device is switched off and secured against acci dentally being switched on Dirty optical surfaces result in increased absorption of the laser radiation This can cause the dirt to heat up sufficiently so that it burns into the optical surfaces and damage them perma nently The fol...

Page 22: ...ten a suitable lens cleaning cloth with ethanol suitable for cleaning optical compo nents o Place one end of the moistened cloth on the optical system and slowly move it over the optical components Do not exert any pressure and do not rub the optical components o Remove any remaining ethanol residue with a dry optical cloth o Repeat the procedure until the surface is completely clean Use a new cle...

Page 23: ...in which the beryllium mirror or the zinc selenide lens has been destroyed must be cleaned decontaminated and ventilated sufficiently Wear gloves and a surgical mask for the following steps Gather all the broken pieces carefully and pack them in a sealed plastic container Clean all contaminated components and surfaces with a damp cloth and pack the cloth in a sealed plastic container Send the cont...

Page 24: ...irrors page22 Instructions for cleaning mirrors Send deflection unit in for repair Laser power decreasing The RAYLASE weldMARK marking software can compensate for a loss of laser power Menu System Global adjustments Marking parameters changed Beam expander changed Laser spot changed Dirty lens page 22 Instructions for cleaning lenses and protective glasses Dirty or dam aged mirrors page 22 Instruc...

Page 25: ...eflection 25 8 DISPOSAL For the disposal of the deflection unit note local policies regulations and laws If the mirrors are made of beryllium the local Hazardous Substance Regulations must be considered The signs shows which deflection units are concerned page 5 Signs ...

Page 26: ... Service 11 Customer Support 11 D Delivery scope 9 Digital interface 18 F Functional description 15 I Installation 20 Intended use 9 L Laser beam deflection unit 15 Laser safety 4 M Manufacturer 11 P Power supply 19 S Safety instructions 4 Seal label 5 Shutter 4 Signs 5 Status LEDs 12 T Technical data 13 Troubleshooting 24 W Warranty 11 X XY2 100 Standard 18 19 Z Zinc selenide 8 23 ...

Page 27: ...Index MN071 v1 0 0 2 Axis Subsystems for Laser Beam Deflection 27 9 APPENDIX Data Sheets MINISCAN II ...

Page 28: ...6 kg approx 1 6 kg approx 2 2 kg Dimension mm L x W x H 100 x 77 x 77 5 134 0 x 98 0 x 93 5 134 0 x 98 0 x 93 5 145 0 x 116 0 x 103 5 Type Dependent Specifications Tuning Tuning Beschreibung LN Optimized for long vectors with low dither and high marking speed RA Optimized for small vectors with low dither and high dynamics for sharp edges Type Dependent Specifications Dynamic Data MS II 10 MS II 1...

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