Soft contact lens analyzer

Details Soft contact lens analyzer Soft contact lens analyzer

1985-06-26

1987-08-04

Rosenberger, R. A.

Optics: measuring and testing

Lens or reflective image former testing

For optical transfer function

G01B 900

Patent

active

046842462

ABSTRACT:
A soft contact lens measuring device. A cylindrical lens support defines a cavity and pedestal for immersing a soft contact lens in a saline solution. A piston engages the support and can be operated by the user to force air in controlled amounts through a narrow passageway extending up through the pedestal to the saline solution. A bubble forms and rises until it is trapped by the lens. The interface between the bubble and the lens makes a convenient surface for focusing a radiuscope to allow lens dimensions to be determined.

REFERENCES:
patent: 3861048 (1975-01-01), Thompson
patent: 3985445 (1976-10-01), Tagnon
patent: 4205452 (1980-06-01), Wichterle et al.
patent: 4212107 (1980-07-01), Mezzasalma
patent: 4277172 (1981-07-01), Richards
patent: 4283139 (1981-08-01), Swope
patent: 4323850 (1982-04-01), Dawson et al.
patent: 4395120 (1983-07-01), Takahashi
patent: 4496243 (1985-01-01), Machida

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