Method and apparatus for testing aspherical lenses

Details Method and apparatus for testing aspherical lenses Method and apparatus for testing aspherical lenses

1987-11-10

1988-10-11

Haroian, Harry N.

Geometrical instruments

Gauge

With support for gauged article

33507, G01B 728

Patent

active

047761016

ABSTRACT:
To test an aspheric lens, the lens is mounted on a base shaft having a central axis so that the center of a reference curvature radius of the lens agrees with a central axis of the base shaft. A stylus mounted on a rotary table is rotated about the lens such that its center of rotation lies on the central axis. The step of stylus is maintained in contact with the surface of the aspherical lens. As the stylus is rotated in contact with the lens, both the rotational and radial position of this stylus is monitored.

REFERENCES:
patent: 3615143 (1971-10-01), Barr et al.
patent: 4070762 (1978-01-01), Siddall
patent: 4151654 (1979-05-01), Hashimoto

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