New generation of LASER modules latest developments and how you can benefit from them. Stephan Broche

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1 New generation of LASER modules latest developments and how you can benefit from them Stephan Broche

2 What kind of restrictions exist with today s laser modules?

3 Restrictions of present laser modules What kind of restrictions exist with today s laser modules? Uneven intensity balance along the line

4 Restrictions of present laser modules What kind of restrictions exist with today s laser modules? Increased laser class due to peaks at line ends

5 Restrictions of present laser modules What kind of restrictions exist with today s laser modules? Limited line straightness Banana S -shape

6 Restrictions of present laser modules What kind of restrictions exist with today s laser modules? Missing comparability between laser manufacturers Peak COG 30,24% 17,85%

7 Restrictions of present laser modules What kind of restrictions exist with today s laser modules? Missing communication to other system components Imaging sensor Laser??? Frame Grabber PC / Software Digital IO Light barrier Conveyor belt

8 Restrictions of present laser modules What kind of restrictions exist with today s laser modules? Boresight Error Angle of laser beam relative to housing Typical values: 1-15 mrad Pointing Stability / Thermal expansion Deviation of beam angle over temperature T1 T2

9 Countermeasure: New Production Core Technology

New Production Core Technology - fully automated high

collimation optics - active alignment with 4 degrees of

all aligned parts through laser welding process result

defined beam position result (2): stable and everlasting

10 New Production Core Technology - fully automated high precision alignment process of laser diode and collimation optics - active alignment with 4 degrees of freedom and accuracy of < 100 nm - permanent fixation of all aligned parts through laser welding process result (1): high precision laser sub-module with completely defined beam position result (2): stable and everlasting connection of laser diode and all optical components due to laser welding process

11 New Production Core Technology

12 New Production Core Technology

13 New Production Core Technology

14 New Production Core Technology

15 Why so much effort?

16 New Production Core Technology Ideal situation Laser diode holder Laser chip beam Laser diode can

17 New Production Core Technology Ideal situation Laser diode holder Laser chip beam Laser diode can Reality Tilted diode Tilted laser chip

18 New Production Core Technology Consequences: Uneven intensity distribution High boresight error Poor line straightness

19 How can you benefit from the new laser generation?

20 Benefits / advantages Mechanics Significantly reduced boresight error down to <0.2mrad (fixed focus) / <3mrad (focusable) plug & play installation of the laser modules Increased pointing stability & reduced thermal expansion fixed projection position during temperature changes due to welded components & stainless steel (instead of anodized aluminum or brass) h7 or M18 mounting surface easy and precise alignment of module Shock & vibration proof certified according to railway standard: IEC EN 61373:2011 Cat. 2 Decreased size of modules easier integration

21 Benefits / advantages Optics Improved homogeneity of lines & lower laser classes typically <25% variation reduced peaks at line ends

22 Benefits / advantages Optics Improved line straightness <0.05% line deviation from best fit line (typ.: %)

23 Benefits / advantages Optics Better comparability between manufacturers all optical parameters specified according to Laser Line Metrics Guidelines from JIIA (Japanese Institute of International Affairs) information also available from emva and aia (European Machine Vision Association & Automated Imaging Association) Source:

24 Benefits / advantages Optics Line width and Depth-of-Focus according to your needs

25 Benefits / advantages Electronics Fail-safe electronic design according to EN ISO /-2 Cat. 3 PL D Rugged connector M12 (5-pin) Communication interfaces RS-232 & I²C High modulation frequencies TTL up to 400 khz Protection burst & surge overvoltage overtemperature reverse polarity

Benefits / advantages Software Graphical User Interface Weighted lifetime Custom pin assignment Readout of operation parameters e.g. actual output power, min/max temperature, runtime Readout of module specific parameters e.

26 Benefits / advantages Software Graphical User Interface Weighted lifetime Custom pin assignment Readout of operation parameters e.g. actual output power, min/max temperature, runtime Readout of module specific parameters e.g. wavelength, power, serial number, firmware version

27 Benefits / advantages Software

28 Benefits / advantages Software

29 Benefits / advantages L i s t o f r e a d t e l e g r a m s L i s t o f w r i t e t e l e g r a m s GET_LASER_Current GET_MODE: reads the hardware mode of the LDU e.g. Enable on/off digital modulation control input Enable on/off analog modulation Enable on/off fail out GET_CONFIG_MODE (pin configuration) GET_LD_LIFETIME GET_LD_TEMP GET_POWER_VAL_IN_PERC GET_MIN_WARN_TEMP / GET_MAX_WARN_TEMP GET_MIN_SHTDWN_TEMP / GET_MAX_SHTDWN_TEMP GET_STATUS: reads the module status byte. The module status indicates the status of a LDU module after the previous write transmission (errors & warning flags) GET_ANALOG_MOD_ON_OFF / GET_DIGITAL_MOD_ON_OFF GET_MODULE_TOTAL_ONTIME GET_CALIBRATED_LASER: reads calibrated laser power + wavelength GET_PART_NO GET_POWER_OUT_ABS GET_FW_VERSION GET_SERIAL_NO GET_CMD_SET_VERSION GET_PING SET_CONFIG_MODE: set pin configuration SET_LASER_ON / SET_LASER_OFF SET_LASER_ON_OFF: toggles between on & off mode SET_POWER_VALUE_IN_PERC SET_MIN_WARN_TEMP / SET_MAX_WARN_TEMP SET_ANALOG_MOD_ON_OFF SET_DIGITAL_MOD_ON_OFF SET_USER_PASSWD SET_DEFAULT_POW_VAL SET_TWI_ADDR: sets a new device ID for TWI and UART interface

30 Benefits / advantages Missing communication to other system components Laser Frame Grabber 20% more power Digital IO Imaging sensor PC / Software Light barrier Conveyor belt

31 Thank you for your attention!

32 C o n t a c t Please don t hesitate to contact me for further information! Stephan Broche Sales Manager Machine Vision Z-LASER Optoelektronik GmbH Merzhauser Str Freiburg, Germany Tel Fax Mobil Mail broche@z-laser.de Web

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