Method and apparatus for measuring eccentricity of optical...

Details Method and apparatus for measuring eccentricity of optical... Method and apparatus for measuring eccentricity of optical...

2006-05-16

2006-05-16

Pham, Hoa Q. (Department: 2877)

Optics: measuring and testing

Lens or reflective image former testing

Optical center, cylinder axis, or prism measuring or...

Reexamination Certificate

active

07046351

ABSTRACT:
An apparatus for measuring eccentricity of an optical lens includes a rotary lens holder which supports a first lens surface of an optical lens by vacuum aspiration; a first determining device for determining whether a curvature center of a central portion of the first lens surface is positioned on the rotational axis; a second determining device for determining whether a curvature center of a peripheral portion of the first lens surface is positioned on the rotational axis; and an eccentricity detection device which detects an eccentricity of the optical lens with respect to the rotational axis to calculate an eccentricity of a vertex of the first lens surface with respect to the radial center of the optical lens, including a detector contacts a rim of the optical lens to detect the eccentricity of the optical lens with respect to the rotational axis.

REFERENCES:
patent: 5548396 (1996-08-01), Morita et al.
patent: 5844670 (1998-12-01), Morita et al.
patent: 6-258182 (1994-09-01), None
patent: 406273268 (1994-09-01), None
patent: 07159283 (1995-06-01), None
patent: 7-229812 (1995-08-01), None

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