If you have researched the AndonStar ADSM201 microscope, you may have come across my Youtube videos showing how I have added polarizing filters to the lights and the microscope base to achieve a clear view of objects under the microscope while eliminating back reflections.  If you set the polarization of both LED's illuminating your work to one polarization plane, then you can rotate the filter on the microscope lens to pass or block direct reflections from the lights.

This is most easily seen in the images I have attached.  Notice that without polarization control, we are unable to read the text printed on the semiconductor.  When the polarizer is rotated to block the reflection, the text is easily seen. I like to call it X-ray vision, but of course it is only a trick with the light polarization.  One can quickly rotate this filter between the two states to get a clearer view of a desired feature.

This is also useful when examining shiny objects like coins, or especially useful in analyzing natural elements (rocks, gems, insects) that sometimes have a defined polarization component to their structure.

This auction is for the polarizer set only.  You will receive three polarizers.  One is sized to fit in the microscope lens housing and the two others fit inside the LED side lights.

For those of you who might ask me about my soldering station, I can explain.  Yes, I have mounted the AndonStar ADSM201 upside down using its original base screwed to my shelf that holds the monitor.  This gives me 8.5 inches of working depth to the pcb for soldering.  At this working depth, the field of view is 45mm X by 28mm Y and I have a depth of field in excess of 30mm.  The big tube with the paper towel rolls is a fume extraction system with carbon filter that I built recently.  I will make an instructable soon on its construction.  The paper towel rolls are placed there for a reason.  They create a laminar flow suction for the soldering fumes which is more effective than one large opening.  The markings on the rolls are a tribute to my dog that passed away recently.  A Beagle named Pistol.  I use a JBC soldering station and can truly say it is the best iron I have ever used.  I used to get a sore neck from stooping forward while soldering.  I now sit straight up in my chair and can see everything through the monitor as I solder.  I can highly recommend the AndonStar ADSM201 for PCB rework or new work.  Note:  This polarizer set also fits the newer ADSM301 and ADSM302 microscope.

Final note:  I travel quite a bit, so I sometimes can't get to my ebay sales for about a week and then I ship all the orders at once.  For this reason, I have a 10 day handling time.

Thanks for your interest,   John