Christopher Hall

Senior Engineer, QED Optics

Christopher Hall is senior engineer at QED Optics (Rochester, NY).

FIGURE 1. A plano wavefront propagates through, and is aberrated by, a right-angle prism.
Optics & Design

Test and Measurement: MRF fabricates 'perfectly bad' surfaces

Feb. 10, 2014
Magnetorheological finishing (MRF) can be used to modify and characterize a surface in an optical system so that it is "perfectly bad," or precisely compensating for all other...