![Top Top](http://www.experimental-engineering.co.uk/wp-content/uploads/2010/08/01082010007-300x225.jpg)
An ICL barcode scanner from the 80s is shown here. This is the top of the unit with cover on.
![Cover Removed Cover Removed](http://www.experimental-engineering.co.uk/wp-content/uploads/2010/08/01082010008-300x225.jpg)
Plastic cover removed from the unit showing internal components. Main PSU on left, scan assembly in center. Laser PSU & Cooling fan on right. Laser tube at top.
![Scan Motor Scan Motor](http://www.experimental-engineering.co.uk/wp-content/uploads/2010/08/01082010009-300x225.jpg)
Closeup of laser scan motor. This unit scans the laser beam rapidly across the glass plate to read the barcode.
![Controller PCB Controller PCB](http://www.experimental-engineering.co.uk/wp-content/uploads/2010/08/01082010019-300x225.jpg)
View of the bottom of the unit, showing the controller PCB in the centre.
![Scan Motor Driver Scan Motor Driver](http://www.experimental-engineering.co.uk/wp-content/uploads/2010/08/01082010020-300x225.jpg)
The 3-phase motor driver circuit for the scan motor. 15v DC powered.
![Laser Unit Laser Unit](http://www.experimental-engineering.co.uk/wp-content/uploads/2010/08/01082010025-300x225.jpg)
This is the laser unit disconnected from the back of the scanner. HT PSU is on right hand side, beam emerges from optics on left.
![Laser Unit Label Laser Unit Label](http://www.experimental-engineering.co.uk/wp-content/uploads/2010/08/01082010013-300x225.jpg)
This unit is date stamped 1987. The oldest laser unit i own.
![Tube PSU Tube PSU](http://www.experimental-engineering.co.uk/wp-content/uploads/2010/08/01082010012-300x225.jpg)
Laser tube power supply. Input voltage: 24v DC. Output: 1.8kV 4mA.
![Laser PSU Board Laser PSU Board](http://www.experimental-engineering.co.uk/wp-content/uploads/2010/08/01082010027-300x225.jpg)
Rear of HT PSU. Obviously the factory made a mistake or two 🙂
![Laser Tube Mounting Laser Tube Mounting](http://www.experimental-engineering.co.uk/wp-content/uploads/2010/08/01082010010-300x225.jpg)
Top cover removed from the laser unit here shows the 1mW He-Ne tube. Manufactured by Aerotech.
![Tube Label Tube Label](http://www.experimental-engineering.co.uk/wp-content/uploads/2010/08/01082010022-300x225.jpg)
Tube label. Manufactured July 1993. Model LT06XR.
![Plasma Plasma](http://www.experimental-engineering.co.uk/wp-content/uploads/2010/08/01082010023-300x225.jpg)
Here the tube has been removed from it’s mount to show the bore down the centre while energized.
![OC Mirror OC Mirror](http://www.experimental-engineering.co.uk/wp-content/uploads/2010/08/01082010024-300x225.jpg)
OC end of the tube shown here lasing.
![Beam Beam](http://www.experimental-engineering.co.uk/wp-content/uploads/2010/08/01082010021-300x225.jpg)
Beam output from the optics on the laser unit.
![Tube Optics Tube Optics](http://www.experimental-engineering.co.uk/wp-content/uploads/2010/08/01082010011-300x225.jpg)
Optics built into the laser unit. Simple turning mirror on adjustable mount & collimating lens assembly.
![Scan Lines Scan Lines](http://www.experimental-engineering.co.uk/wp-content/uploads/2010/08/01082010018-300x225.jpg)
Kind of hard to see but the unit is running here & projecting the scan lines on the top glass.
![Laser Tube Mounting Laser Tube Mounting](http://www.experimental-engineering.co.uk/wp-content/uploads/2010/08/01082010010-300x225.jpg)
Laser tube mounting. A combo of spring clips & hot glue hold this He-Ne tube in place
I got a HENE tube with a power supply connected to Red, Black, white and green wires. I’m trying to understand how to power this Laser 05-lhr-004-146 melles-griot. I was thinking to attempt to use it for something like cell sorting.
I googled the MPH2155 label and I got to your great page. The output is 1.8 kv/ 4.0 mA. I cannot see if this is using 24 or 12 volts on black and red and have no idea what to put on the white a green. You sound like you might have a better idea.
Thank you,
Adrian