OPTOGAMA MEX13-HP User manual

!
MANUAL v8
HIGH POWER MOTORISED !
BEAM EXPANDERS
!
1x - 3x | 1x - 5x
MEX13-HP"
MEX15-HP
KEY for DISCOVERIES


Table of contents"
Table of contents!2....................................................................................................................................................
1. Safety requirements!4............................................................................................................................................
2. Operation principle!5.............................................................................................................................................
3. Features and advantages!5....................................................................................................................................................
4. Optical design!5.....................................................................................................................................................................
5. Product description!6............................................................................................................................................
5.1.Optical specifications!6....................................................................................................................................................
5.2.Mechanical specifications!6.............................................................................................................................................
5.3.Electronic specifications!6................................................................................................................................................
5.4.Conditions!6....................................................................................................................................................................
5.5.Interfaces!7......................................................................................................................................................................
5.6.Identification!7.................................................................................................................................................................
5.7.Wiring!7...........................................................................................................................................................................
5.8.Voltage levels!7................................................................................................................................................................
5.9.What’s in the box?!7........................................................................................................................................................
6. Software!8.............................................................................................................................................................
6.1.Hardware requirements (recommended)!8.......................................................................................................................
6.2.System requirements!8....................................................................................................................................................
6.3.Supported client operating systems!8..............................................................................................................................
6.4.Installing the software!8...................................................................................................................................................
6.5.Using the software!10......................................................................................................................................................
6.6.Main window!11..............................................................................................................................................................
6.7.Magnification calibration. MOF coefficient!12...................................................................................................................
6.8.Divergence adjustment. DOF coefficient!12.....................................................................................................................
6.9.Updating the firmware!13................................................................................................................................................
7. Commands!15.....................................................................................................................................................
7.1.Interface!15.....................................................................................................................................................................
7.2.Description!15.................................................................................................................................................................
7.3.Serial communication example in Python!18....................................................................................................................
8. Technical drawings!19...........................................................................................................................................
2


MEX
Motorised beam expander
Congratulations on your purchase of the motorised beam
expander from Optogama, UAB.
***
March 2018
Copyright UAB Optogama. All rights reserved.
No part of this manual may be reproduced, transmitted in
any form without the permission of Optogama.
Claims will not be accepted and warranty repair will not be
carried out in case of improper use, incorrect service and
maintenance not according to product instructions.
Warranty claim shall not be accepted if there are any signs
of:
•Non-authorised alteration
•Disassembling of the device
•Mechanical or any external damage
•If warranty term has expired
•Serial number of the product is missing
Symbols"
CAUTION!
Sections marked with this symbol indicate dangerous
situations that can result in damage to the device,
components connected to it or operator.
NOTE:
Sections marked with this symbol indicate important
information on beam expander or about this manual.
Due to constant development of our products we reserve
the right to make changes in the production line without
further notice. Up-to-date information is available at our
website www.optogama.com. If there are any further
questions, please contact us.
Optogama is not liable for damage or injury resulting directly
or indirectly from use of this product for anything other than
its intended purpose.
The motorised beam expander is intended for industrial and
scientific use only. If there are any other electrical devices
connected to or used in conjunction with the beam
expander, all legal regulations and technical standards that
are applied to those devices must be observed as well.
For any technical assistance and consultation please
contact your local dealer or directly [email protected].
3


1. Safety requirements"
•All safety instructions must be followed.
•This manual should be read carefully before first
intended use.
•All rules and regulations concerning safe operation of
lasers must be known and applied while installing and
operating motorised beam expander.
•Even when with safety glasses avoid eye contact with
direct or scattered laser light while assembling, installing
and operating the device.
•The device should never be exposed to dirt, dust or
moisture.
•Before any operation make sure the device is installed
correctly and well adjusted.
•Protective measures should be considered if necessary.
•Electrical safety requirements must be complied while
operating this device.
CAUTION! High laser output power may damage or destroy
optical elements.
CAUTION! Make sure laser beam is not converging after
passing through the beam expander - it may damage other
optical elements along the optical axis.
CAUTION! Device is meant to be used with collimated
beam. Users take full responsibility when using the expander
with highly converging beam.
4
INPUT
COVER STICKERS MUST $
BE REMOVED BEFORE USE
OUTPUT
!
!


2. Operation principle"
MEX13-HP(18) series motorised beam expanders consists
of two motorised adjustable lenses. Expansion adjustment is
achieved by changing the position of the second lens which
is followed continuously by the first one. While changing the
magnification level this technology prevents the system from
focusing laser beam and damaging optical elements that are
situated along the optical axis.
NOTE: No homing required.
CAUTION! Before increasing laser power make sure laser
beam is not converging after passing through the beam
expander. It may damage optical elements situated along
the optical axis.
NOTE: Required laser beam divergence is achieved by
adjusting divergence value (DOF coefficient) in the software
(or terminal).
3. Features and advantages"
• Highest beam pointing stability (< 0.5 mrad)
• Fused silica optical elements
• Integrated controller
• No homing required. Closed loop design
• Diffraction limited performance for all magnifications!
4. Optical design"
To achieve best performance and highest pointing stability
during operation (<0.5 mrad) MEX optical design is based
on sliding-lenses closed loop design. Neither of the lenses
are rotating while changing both zoom and divergence
levels.
Optical design of MEX13-HP and MEX15-HP series (see Fig
1. below): "
Converging > Diverging > Converging
NOTE: Continuous change of expansion and divergence.
NOTE: No ghost reflections.
NOTE: Diffraction limited optical design.
"
Fig 1. Schematic explanation of optical design for MEX13-HP series
motorised beam expander.!
"
Fig 2. Schematic explanation of optical design for MEX15-HP series
motorised beam expander.
1st lens
2nd lens
3rd lens
1st lens
2nd lens group
3rd lens group
5


5. Product description"
MEX series motorised laser beam expanders are used to
increase or decrease laser beam diameter and adjust its
divergence.
Standard or custom made beam expanders and reducers
have a unique closed loop sliding-lens design, ensuring
highest pointing stability and minimal dimensions.
5.1. Optical specifications"
5.2. Mechanical specifications"
5.3. Electronic specifications"
5.4. Conditions"
Magnification ranges
MEX13-HP - 1.0x - 3.0x "
MEX15-HP - 1.0x - 5.0x
Clear input aperture
11 mm
Clear output aperture
MEX13-HP - 28 mm"
MEX15-HP - 24 mm
Optical elements
MEX13-HP - 3"
MEX15-HP - 6
LIDT coating
10 [J/cm2] (10 ns @ 1064 nm)
MAX. Laser power
Up to 200 W "
@ 1030, 500 fs, 1 Mhz
Pointing stability$
during lens movement
<0.5 mrad
Adjustment time
MIN to MAX - in 1.5 sec
Available coatings
A. Standard wavelenghts, nm
1st harm
2nd harm
3rd harm
1064
532
355
1020 - 1040
510 - 520
343
760-840
390 - 410
-
B. Dual wavelenghts, nm
1064 + 532
1030 + 515
800 + 400
C. Custom wavelenghts
Custom coating available
MEX13-HP
MEX15-HP
Lenght
207 mm
250 mm
Width
60 mm
65 mm
Height
60 mm
65 mm
Interface options:
Terminal
Using commands described"
in p. 8 “Commands”
Software
Using BDS software
Input voltage
12 V
Transmission speed
up to 115,200 bits/s (RS-232)
full speed USB 2.0
Operating temperature
10 0C to 40 0C
Storage temperature
-15 0C to 50 0C
6


5.5. Interfaces"
There are two type of connections available:
1. USB 2.0 and power plug for 12 V.
2. RS-232 and power plug for 12 V.
5.6. Identification"
Nameplate on beam expander:
" "
5.7. Wiring"
"
Fig 3. MEX connectors
5.8. Voltage levels"
The RS-232 standard defines the voltage levels that
correspond to logical one and logical zero levels for the data
transmission and the control signal lines. Valid signals are
either in the range of +3 to +15 volts or the range −3 to −15
volts with respect to the "Common Ground" (GND) pin;
consequently, the range between −3 to +3 volts is not a
valid RS-232 level. For data transmission lines (TxD, RxD),
logic one is defined as a negative voltage, the signal
condition is called "mark". Logic zero is positive and the
signal condition is termed "space".
MEX operates on signal levels of ±5$V and can accept
signal levels of up to ±15 V. Because the voltage levels are
higher than logic levels typically used by integrated circuits,
special intervening driver circuits are required to translate
logic levels. These also protect the device's internal circuitry
from short circuits or transients that may appear on the
RS-232 interface, and provide sufficient current to comply
with the slew rate requirements for data transmission.
5.9. What’s in the box?"
Standard version includes:
1. Motorised beam expander
2. Software
3. Power supply
4. USB or RS-232 (D-Sub 9) cable
NOTE: Other accessories must be purchased separately
Product, Expansion
Wavelength
Serial number
MEX 1X-3X
515+1030 nm
SN: 1B10318039
PC connection
Power supply
1 - D+ (RS-232: Tx)
1 - GND
2 - D- (RS-232: Rx)
2 - GND
3 - VUSB (RS-232: NC)
3 - 12V
4 - GND
Power supply
PC connection
1
2
3
1
2
3
4
7


6. Software"
6.1. Hardware requirements
(recommended)"
6.2. System requirements"
To install application you must have administrator rights on
your computer.
To run BDS application Microsoft .NET 4.5.2 Framework or
later must be installed. Installer detects Microsoft .NET
Framework and installs it. Administrator privileges are
required for installation. Contact your network administrator
if you do not have administrator rights on the computer.
6.3. Supported client operating
systems"
•Windows Vista SP2
•Windows 7 SP1
•Windows 8
•Windows 8.1 (.NET included with OS)
•Windows 10 (.NET 4.6 included with OS)
•Windows Server 2008 SP2/R2
•Windows Server 2012 (.NET included with OS)
6.4. Installing the software"
1. Check and download the latest BDS software from our
website (www.optogama.com) or contact us directly at
[email protected].
2. Run the downloaded software installation file. Installation
window will appear, click “Next” to continue:
"
3. Select “Create a desktop shortcut” if it is necessary and
click “Next”:
"!
Processor
1 Ghz
RAM
512 Mb
Disk space
32-bit
4,5 Gb
64-bit
4,5 Gb
8


4. Review setup information and proceed the installation. To
continue click “Install”:
"
5. Setup will finish the installation:
"
6. Press “Finish” to end the installation:
"!
7. Connect the device and the PC via USB or RS232 cable.
NOTE: Lenses may move themselves when power is
plugged in.
8. Plug in MEX power supply and AC adaptor to wall outlet.
9. The device will be detected and configured.
10. The device installation is complete.
9


6.5. Using the software "
CAUTION! Do not switch the laser ON if the device is not
adjusted properly, it may damage or destroy optical
elements.
Launch BDS program using BDS icon on the desktop.
"
11.Device selector window will appear. Select COM port (to
which the beam expander is connected) from the drop
down menu. Press “Connect” to connect the device or
“Rescan” if your device is not visible. "
Select “Filter” when device is connected via USB cable.
All other COM ports will be hidden except our device. "
"
NOTE: When connecting via RS232 cable “Filter” must
be deselected, otherwise device will not be visible.
"
12.Once you are connected to your device you will be
greeted by main program window for motorised beam
expander. Window is the same for all devices but only
specific options for control will be available. (Detailed
explanation in p. 11 “Main window (expander mode) / (full
beam control mode)”.
13.Select “Settings” in a sliding menu located on the left.
Settings menu will appear. Select laser wavelength from
drop down menu, then press “Set”.
14.Change Magnification offset to calibrate magnification
values (MOF) "
"
BDS
10