With the aim to measure the radius of curvature deviation and the surface form deviation of optical elements online in
the workshop, based on laser testing technique, two solutions of miniaturization without precision guider sphericity
interferometer systems are described, and the principle of systems are analyzed. Compared with the traditional sphericity
interferometer, the systems designed are particularly suitable for testing mirror noncontact online in workshop,
advantaged in compact structure, no precision guider, high efficiency and low costs. The interferometer systems use the
different radius of curvature of existing spherical test plates in the production workshop to produce reference wavefront.
The systems can not only get the astigmatism and local deviation of lens, but also can reflect the radius of curvature
deviation, which provides rapid and nondestructive noncontact online testing.
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