Optics adapter plate

Mechanical design for an optics assembly:
pmt_optics_1

I made an adapter plate between the XYZ translation stage and the 2"/1" lens-rings. The XYZ stage has a 50 mm x 50 mm M6 thread pattern, and the optics are mounted on a straight line with M4 screws through the adapter plate. M6 countersink is 12mm diameter 7mm deep, while the M4 countersink is 8mm diameter and 5mm deep.

adapter_plate adapter_plate_machined

In real life this looks almost like the CAD model:

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