CRI Viewing Optics - Perpendicular View Finder

Direct Viewfinders have been utilized for several decades in optical measuring instruments. Typically, the eyepiece is in a fixed location on the instrument and is otherwise non- movable. As such the viewer must align themselves with the angle of the viewing optics to use the eyepiece. This can be disadvantageous in situations where the eyepiece is in an inaccessible and/or uncomfortable spot for the viewer.

For those cases where the instrument is mounted vertically on a test fixture or a robotically controlled XYZ table; the Perpendicular Viewfinder VO-202 is an alternative to the rotatable Viewfinder.