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UltravioletPhotography

Teardown of micro4/3 UV/IR blocking filter


Dmitry

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Since I have internal blocking filter removed from my Olympus e-m10, I trying to break it on pieces. It does contain two layers.

 

Transparent layer 2mm thickness.

Bluish layer 0.7mm thickness.

 

They are glued somehow.

 

Bluish layer is very fragile to heating. Slow heating in water up to boiling does few cracks on it. Transparent layer still solid. I was able to remove tiny bluish piece to measure thickness.

 

Next phase is to heat it using soldering iron. There is result after 10 minutes of heating. Look at burnt glue areas.

 

post-192-0-85492300-1536350853.jpg

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BG type filter glass (BG meaning Blue/Green) can be quite sensitive to heat. It can crack easy when heated. I would not use heat for separation, for any filter glass.

The adhesive is most likely UV curing type, and can be separated by soaking in methylene chloride (nasty stuff, AKA paint stripper), it can take days for separation.

In some cases acetone will work, but it will require much longer soaking time than using methylene chloride.

WARNING: Methylene Chloride. Read the link below, definitely bad stuff.

https://en.wikipedia...ethane#Toxicity

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