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A 2-Axis, Multihead Light Positioner
This post is part of a longer-running series about giving users a tangible reason to trust their hardware through my IRIS (Infra-Red, in-situ) technique for the non-destructive inspection of chips. Previously, I discussed the focus stage, light source, and methodology used to develop IRIS.
This was a big time saver, because when I copied the elastic lock toolchanger assembly to work as my rotational axis actuator, most of the tricky parts I could just order as spares from the Filastruder site. As with the fine focus stage, I had all the parts machined by Victor at Jiada; if you want copies of various pieces, and you have Wechat, you can contact him at “Victor-Jiada” and send along the corresponding CAD file. Imaging chip built on a heavily doped substrate with an LED light source is like trying to see through thick fog with your high beams on: you see mostly a bright gray, with glints of the underlying wires coming through every now and then.
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