CVI Waveplate Part # 709-2215

This is a rare 1/2 wave Achromatic waveplate for visible lasers.

Tested with 450, 488, 532, 589 and 635nm in a rotating mount into a polarized visible beam splitter cube. 

It's original box was trashed so I gave it a more protective home in a membrane box. 

The optic itself is 2 plates either optically contacted or cemented together at orthogonal angles.

The assembly is 1/2" diameter.

I combine ship to keep costs down.