OPTICS/OPTICAL MATERIALS

Jan. 1, 1999
The Q22 magnetorheological finishing (MRF) system from QED Technologies (Rochester, NY) represents the commercialization of an entirely new approach to polishing and fine figuring of high-precision glass optics (see Laser Focus World, Sept. 1998, p. 187). The system uses a magnetorheological fluid as a compliant replacement for a conventional rigid lap, then magnetically manipulates the viscosity of the fluid where it touches the workpiece surface to create a subaperture polishing lap conforming

OPTICS/OPTICAL MATERIALS

The Q22 magnetorheological finishing (MRF) system from QED Technologies (Rochester, NY) represents the commercialization of an entirely new approach to polishing and fine figuring of high-precision glass optics (see Laser Focus World, Sept. 1998, p. 187). The system uses a magnetorheological fluid as a compliant replacement for a conventional rigid lap, then magnetically manipulates the viscosity of the fluid where it touches the workpiece surface to create a subaperture polishing lap conforming to the surface. Invented in Belarus and fine-tuned at the Center for Optics Manufacturing at the University of Rochester (Rochester, NY), the Q22 was introduced in April 1998. It is a multiple-axis, computer-controlled machine that eliminates subsurface damage while improving surface figure. The Q22 can improve precision ground or polished optics into optics having figure accuracies of better than l/20 p-v in a matter of minutes. By eliminating the need for artisan-based labor and automating the difficult and time-consuming final figuring step, the Q22 will increase production capability and reliability.

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