overmolding glass 2

[cambria]

I have a sensor which is a small delrin cylinder, to the end of which a small lens is adhered. I am contemplating an insert mold where we incorporate the lens into the body. The reason is to guarantee that the lens stays there over the lifetime of the product. We are currently using a custom epoxy and special processing techniques.

I will need a resin like delrin that is resistant to fluids - water, solvents etc.

Any suggestions?

 

[cambria]

Thanks Mike - you are right. Our lens holder is a precision affair and we center to the ID then manipulate to final position. You have described what we use to do - still do on some units. The next step was to keep that and then add a retention ring with an ultrasonic welder to hold the lens on and hopefully bind it. And it all takes time...