Apparatus for measuring the radii of contact lenses

Details Apparatus for measuring the radii of contact lenses Apparatus for measuring the radii of contact lenses

1979-04-11

1980-09-30

Corbin, John K.

Optics: measuring and testing

Lens or reflective image former testing

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

G01B 900

Patent

active

042252318

ABSTRACT:
An apparatus for measuring the radii of contact lenses includes a holding arrangement for mounting a contact lens to be measured, and a mirror arrangement for directing a measuring beam emitted from an optical radius-measuring device to the contact lens to be measured. The optical radius-measuring device has an optical axis which is located at different height positions during measurement of the contact lens and the mirror arrangement is movable so that the optical axis of the radius-measuring device passes through the area of the center of curvature of the contact lens surface to be measured.

REFERENCES:
patent: 3019708 (1962-02-01), French et al.
patent: 3027804 (1962-04-01), Wesley et al.
patent: 3540828 (1970-11-01), Nupuf

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