Translation insensitive keratometer using moire deflectometry

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

1989-07-21

1991-01-15

Bovernick, Rodney B.

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

351211, 351246, 356 355, A61B 3107

Patent

active

049848836

ABSTRACT:
A translation insensitive keratometer includes a pair of laser sources and optical coupling systems for irradiating a specular object. The laser beams are reflected separately back through the optical coupling systems to a pair 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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