Refow sounds difficult and you risk distorting the lens shape. how about using underfill with UV curable adhesive to set the sphere array/mold. Best regards, Glenn -----Original Message----- From: Alasdair Rankin [mailto:arankin@groupivsemi.com] Sent: Monday, November 09, 2009 6:08 AM To: 'General MEMS discussion' Subject: Re: [mems-talk] Microlens array Hi Dean, I appreciate the feedback. That's an interesting approach that I hadn't thought of. I was planning to align to a pattern underneath. It sounds like what you're proposing would be a more uniform array of lenses, if I am understanding you. The surface already does have a topography to it, and this would probably be an ideal approach for a proof of concept. Do you think this could be repeatable? Any experience with the suggested chemical? Thanks guys for your feedback, Alasdair