Translation insensitive keratometer using moire deflectometry

Details Translation insensitive keratometer using moire deflectometry Translation insensitive keratometer using moire deflectometry

1990-10-26

1992-03-31

Bovernick, Rodney B.

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

351247, A61B 310

Patent

active

051002272

ABSTRACT:
An improved translation insensitive keratometer includes a pair of optical coupling systems for irradiating a specular object having different beam geometries. Laser beams are separately identified by a unique identifying characteristic and processed through the optical coupling systems to a plurality of moire deflectometers.

REFERENCES:
patent: 4432239 (1984-02-01), Bykov
patent: 4692003 (1987-09-01), Adachi et al.
patent: 4850693 (1989-07-01), Deason et al.

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