Automatic method of verifying at least one centering...

Details Automatic method of verifying at least one centering... Automatic method of verifying at least one centering...

2004-11-04

2008-09-30

Hasan, Mohammed (Department: 2873)

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

C351S205000

Reexamination Certificate

active

07429106

ABSTRACT:
A method of verifying at least one centering characteristic of an ophthalmic lens provided with markings and mounted on a frame, the method includes:a) positioning the ophthalmic lens on a support placed facing a pattern filter; b) using a diffuse light source to illuminate the ophthalmic lens through the pattern filter; c) using a digital camera to pick up the light transmitted by the ophthalmic lens; d) processing the signal output by the digital camera to determine the positions of the markings of the ophthalmic lens in a stationary frame of reference; e) determining the position of the support in the stationary frame of reference; and f) deducing the value of the centering characteristic from the known position of the support and from the positions of the permanent markings of the ophthalmic lens.

REFERENCES:
patent: 5152067 (1992-10-01), Kurachi et al.
patent: 5428448 (1995-06-01), Albert-Garcia
patent: 5855074 (1999-01-01), Abitbol et al.
patent: 5973772 (1999-10-01), Fukuma et al.
patent: 2002/0085196 (2002-07-01), Fukuma et al.
patent: 875 706 (1979-08-01), None
patent: 2 799 545 (2001-04-01), None

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