Micro Lens Array Milling

Mirco Lens Arrays
Application:
Milling a lens array in Electroless Ni mold insert.

Process:
Using 3 axes of contouring motion (X,Z,C or X,Y,Z) in combination with a high speed milling spindle, mill aspheric concave lenses into Ni plated substrate.

Part Configuration:
2mm Diameter with 1mm sagital depth, 3 X 3, aspheric lenslet array on 3mm pitch. The part is held with vacuum on the C-Axis Chuck.

Machining Parameters:

Tooling Spindle Speed: 35,000 rpm
Linear federate: 25mm/min
Depth of cut: Variable

Tool Configuration:

0.5mm radius, single flute, diamond, ball, end mill.