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Parabolic and Elliptical Mirrors

For narrow fields of view, a parabolic mirror will create nearly perfect images of distant objects due to its spherical correction ability. A contemporary application can be found in the collection optics for large collimated laser beams. Sometimes a designer only needs an off-axis section of a parabolic mirror. JML provides both Parabolic and Off-Axis Parabolic mirrors. JML also offers Elliptical mirrors. These mirrors have a unique imaging property stated in terms of its two foci: an elliptical mirror will perfectly image an object at one focus to its other focus. In practical systems, the elliptical mirror is not a complete ellipsoid; instead, a common elliptical mirror tends to be a small segment of the whole ellipse. An electrolytic process is used to form a sheet of nickel around a mold then a thin layer of rhodium is electrolytically applied to the nickel mirror after it has been released from its mold.