Method and apparatus for obtaining the distance from an...

Details Method and apparatus for obtaining the distance from an... Method and apparatus for obtaining the distance from an...

2011-02-15

2011-02-15

Dinh, Jack (Department: 2873)

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

C351S211000, C351S221000, C351S246000

Reexamination Certificate

active

07887184

ABSTRACT:
Systems and methods for measuring a distance from a reference plane of an optical measurement instrument to a reference plane of an optical device under test are disclose. In one embodiment a system for measuring this distance includes an illumination system, an optical system, and optical sensor and a processor. The illumination system is configured or adapted to illuminate the object under test. The optical system is configured or adapted to receive light from the object under test and to produce an aberrated image. The optical sensor is configured or adapted to receive and sense the aberrated image. The processor determines the distance from the reference plane of the optical measurement instrument to the reference plane of the optical device based on an aspect of the aberrated image sensed by the optical sensor.

REFERENCES:
patent: 5165063 (1992-11-01), Strater et al.
patent: 6002484 (1999-12-01), Rozema et al.
patent: 0 142 464 (1984-09-01), None
patent: 1 223 406 (2002-07-01), None
F. Pedroti et al., “Optik fur ingenieure-grudlagen,” 2005, Springer, XP00478814, pp. 115-143.

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