The main application for dove-prism is as image rotators in a variety of optomechanical systems. As the prism is rotated, the image passing through will rotate at twice angular rate of the prism. It is very important that the incident beam is collimated. In addition the large reflecting face must be kept very clean and the prism should not be rested on this face. We supply other dove-prisms, if you have some special request, please contact an Application Engineer for further details.