Cuvette for ophthalmic lens

G - Physics – 01 – B

Patent

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Details

G01B 9/02 (2006.01) G01M 11/02 (2006.01) G01N 35/02 (2006.01)

Patent

CA 2673200

Modified MZ (Mach-Zender) interferometers are utilized to analyze the transmitted, aspherical wavefront of an ophthalmic lens by mounting the lens in a cuvette having a rotatable carousel that can hold multiple lenses. Fresh, temperature controlled, saline solution is circulated about the lenses, and the cuvette is positioned in a vertical test arm of the interferometer configuration. Reverse raytracing is utilized to remove aberrations induced into the wavefront as it is imaged from immediately behind the lens to the detector of the interferometer.

Des interféromètres MZ (Mach-Zender) modifiés sont utilisés pour analyser le front d'onde asphérique transmis d'une lentille ophtalmique par montage de la lentille dans une cuvette présentant un carrousel rotatif pouvant prendre en charge de multiples lentilles. Une solution saline fraîche à température régulée est mise en circulation autour des lentilles, et la cuvette est disposée dans un bras d'essai vertical de la configuration de l'interféromètre. Un lancer de rayon inverse est employé pour retirer des aberrations induites dans le front d'onde lorsqu'il est représenté sous forme d'image de l'arrière immédiat de la lentille au détecteur de l'interféromètre.

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